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ix, 628 p. 24 cm
Topic: Phase transformations (Statistical physics) -- Congresses
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Oct 2, 2020
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Winter School of Theoretical Physics, 16th, Karpacz, Poland, 1979
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ix, 597 pages : 25 cm
Topics: Liquid helium, Phase transformations (Statistical physics), Condensed matter, 33.26 statistical...
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Sep 11, 2020
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Sep 11, 2020
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Domb, Cyril
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volumes 24 cm
Topics: Phase transformations (Statistical physics), Critical phenomena (Physics), Transformation de phase...
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Aug 5, 2020
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x, 389 p. : 24 cm
Topics: Phase transformations (Statistical physics), Magnetic resonance
The objective of this project is to investigate, theoretically and experimentally, the flexoelectricity at nanometer scale, and explore the feasibility of using flexoelectric micro/nanostructures for novel sensing including seismic, acoustic and IR detections. FE induced effective piezoelectric properties in FE nanostructures could be a few order of magnitudes higher over their conventional bulk materials properties, which will lead to ultrasensitive electromechanical sensors using FE...
Topics: DTIC Archive, Jiang, Xiaoning, North Carolina State University Raleigh United States, dielectric...
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Jun 20, 2020
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NATO Advanced Study Institute on Phase Transitions in Surface Films (1979 : Erice, Italy)
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xii, 367 pages : 26 cm
Topics: Thin films -- Congresses, Surfaces (Physics) -- Congresses, Phase transformations (Statistical...
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Jun 29, 2020
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Jun 29, 2020
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Brokate, Martin, 1953-
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x, 357 p. : 24 cm
Topics: Hysteresis -- Mathematics, Phase transformations (Statistical physics)
We have designed and grown LaAlO3/SrTiO3 oxide hetero-interfaces and switchable 2DEG by using pulsed laser deposition atomic within-situ reflection high-energy electron diffraction (RHEED). We have also demonstrated that the inline electron holography can directly visualize the 2DEG at the both (001) and (111) LAO/STO interface. Taking an example of 2DEGs forming at LAO/STO interfaces with different crystal symmetry, we have shown that the selective orbital occupation and spatial quantum...
Topics: DTIC Archive, EOM, CHANG BEOM, UNIVERSITY OF WISCONSIN SYSTEM MADISON United States, metamaterials,...
Sharp quantum phase transitions typically require a large system with many particles. Here we show that for a frustrated fully-connected Ising spin network represented by trapped atomic ions, the competition between different spin orders leads to rich phase transitions whose sharpness scales exponentially with the number of spins. This unusual finite-size scaling behavior opens up the possibility of observing sharp quantum phase transitions in a system of just a few trapped ion spins.
Topics: DTIC Archive, Lin,G -D, University of Michigan Ann Arbor United States, PHASE TRANSFORMATIONS,...
The time-differential perturbed angular correlation (TDPAC) technique has been used to investigate the temperature dependence of the electric field gradient (EFG) at Cd impurities in the semiconducting compound In2Se3. Between room temperature and the melting point, four different phases could be observed. Most crystal structures which have been proposed for the alpha and beta phases are shown to be incorrect. The beta prime phase (550-720 C) has not been reported previously. The data suggests...
Topics: DTIC Archive, Krusch,Karl, OREGON STATE UNIV CORVALLIS DEPT OF PHYSICS, *CRYSTAL STRUCTURE, *PHASE...
The time-differential perturbed angular correlation (TDPAC) technique has been used to investigate the temperature dependence of the electric field gradient (EFG) at Cd impurities in the semiconducting compound In2Se3. Between room temperature and the melting point, four different phases could be observed. Most crystal structures which have been proposed for the alpha and beta phases are shown to be incorrect. The beta prime phase (550-720 C) has not been reported previously. The data suggests...
Topics: DTIC Archive, Krusch,Karl, OREGON STATE UNIV CORVALLIS DEPT OF PHYSICS, *CRYSTAL STRUCTURE, *PHASE...
The time-differential perturbed angular correlation (TDPAC) technique has been used to investigate the temperature dependence of the electric field gradient (EFG) at Cd impurities in the semiconducting compound In2Se3. Between room temperature and the melting point, four different phases could be observed. Most crystal structures which have been proposed for the alpha and beta phases are shown to be incorrect. The beta prime phase (550-720 C) has not been reported previously. The data suggests...
Topics: DTIC Archive, Krusch,Karl, OREGON STATE UNIV CORVALLIS DEPT OF PHYSICS, *CRYSTAL STRUCTURE, *PHASE...
The time-differential perturbed angular correlation (TDPAC) technique has been used to investigate the temperature dependence of the electric field gradient (EFG) at Cd impurities in the semiconducting compound In2Se3. Between room temperature and the melting point, four different phases could be observed. Most crystal structures which have been proposed for the alpha and beta phases are shown to be incorrect. The beta prime phase (550-720 C) has not been reported previously. The data suggests...
Topics: DTIC Archive, Krusch,Karl, OREGON STATE UNIV CORVALLIS DEPT OF PHYSICS, *CRYSTAL STRUCTURE, *PHASE...
The time-differential perturbed angular correlation (TDPAC) technique has been used to investigate the temperature dependence of the electric field gradient (EFG) at Cd impurities in the semiconducting compound In2Se3. Between room temperature and the melting point, four different phases could be observed. Most crystal structures which have been proposed for the alpha and beta phases are shown to be incorrect. The beta prime phase (550-720 C) has not been reported previously. The data suggests...
Topics: DTIC Archive, OREGON STATE UNIV CORVALLIS DEPT OF PHYSICS, *CRYSTAL STRUCTURE, *PHASE STUDIES,...
The time-differential perturbed angular correlation (TDPAC) technique has been used to investigate the temperature dependence of the electric field gradient (EFG) at Cd impurities in the semiconducting compound In2Se3. Between room temperature and the melting point, four different phases could be observed. Most crystal structures which have been proposed for the alpha and beta phases are shown to be incorrect. The beta prime phase (550-720 C) has not been reported previously. The data suggests...
Topics: DTIC Archive, Krusch,Karl, OREGON STATE UNIV CORVALLIS DEPT OF PHYSICS, *CRYSTAL STRUCTURE, *PHASE...
The time-differential perturbed angular correlation (TDPAC) technique has been used to investigate the temperature dependence of the electric field gradient (EFG) at Cd impurities in the semiconducting compound In2Se3. Between room temperature and the melting point, four different phases could be observed. Most crystal structures which have been proposed for the alpha and beta phases are shown to be incorrect. The beta prime phase (550-720 C) has not been reported previously. The data suggests...
Topics: DTIC Archive, Krusch,Karl, OREGON STATE UNIV CORVALLIS DEPT OF PHYSICS, *CRYSTAL STRUCTURE, *PHASE...
The time-differential perturbed angular correlation (TDPAC) technique has been used to investigate the temperature dependence of the electric field gradient (EFG) at Cd impurities in the semiconducting compound In2Se3. Between room temperature and the melting point, four different phases could be observed. Most crystal structures which have been proposed for the alpha and beta phases are shown to be incorrect. The beta prime phase (550-720 C) has not been reported previously. The data suggests...
Topics: DTIC Archive, Krusch,Karl, OREGON STATE UNIV CORVALLIS DEPT OF PHYSICS, *CRYSTAL STRUCTURE, *PHASE...
The time-differential perturbed angular correlation (TDPAC) technique has been used to investigate the temperature dependence of the electric field gradient (EFG) at Cd impurities in the semiconducting compound In2Se3. Between room temperature and the melting point, four different phases could be observed. Most crystal structures which have been proposed for the alpha and beta phases are shown to be incorrect. The beta prime phase (550-720 C) has not been reported previously. The data suggests...
Topics: DTIC Archive, Krusch,Karl, OREGON STATE UNIV CORVALLIS DEPT OF PHYSICS, *CRYSTAL STRUCTURE, *PHASE...
The time-differential perturbed angular correlation (TDPAC) technique has been used to investigate the temperature dependence of the electric field gradient (EFG) at Cd impurities in the semiconducting compound In2Se3. Between room temperature and the melting point, four different phases could be observed. Most crystal structures which have been proposed for the alpha and beta phases are shown to be incorrect. The beta prime phase (550-720 C) has not been reported previously. The data suggests...
Topics: DTIC Archive, Krusch,Karl, OREGON STATE UNIV CORVALLIS DEPT OF PHYSICS, *CRYSTAL STRUCTURE, *PHASE...
The equilibrium vapor pressure of antimony triiodide (SbI3) has been measured over a temperature range from 20 to 47 C using a classical Knudsen cell method. An analysis of the slope of that data as a function of temperature yields an enthalpy of sublimation (Hvapor) value of Hvapor = 128.48 kJ/mol for SbI3.
Topics: DTIC Archive, Taylor, Patrick J, US Army Research Laboratory Adelphi United States, doping,...
This project aims to develop a novel three-stage coupled multi-scale QM-MD-SPH approach for modeling and simulation of complex heterogeneous multicomponent reactive systems, considering both high explosive (HE) explosion effects. The novelty of our approach is that the unified particle-based approaches couples the dynamic events over nine orders of magnitude length scales (nm-m) and twelve orders of magnitude timescales (ps-s). This is achieved by using ab initio quantum mechanics (QM)...
Topics: DTIC Archive, Liu,Guirong, University of Cincinnati Cincinnati United States, crystal structure,...
Complex networks have been shown to exhibit universal properties, with one of the most consistent patterns being the scale-free degree distribution, but are there regularities obeyed by the r-hop neighborhood in real networks? We answer this question by identifying another power-law pattern that describes the relationship between the fractions of node pairs C(r) within r hops and the hop count r. This scale-free distribution is pervasive and describes a large variety of networks, ranging from...
Topics: DTIC Archive, Papalexakis,Evangelos, CARNEGIE-MELLON UNIV PITTSBURGH PA PITTSBURGH United States,...
Alumina (Al2O3, aluminum oxide) is an excellent candidate as an optical material for laser gain media due to its high thermal conductivity. However, a rare earth (RE) cation dopant is necessary for the material to lase. To combat the dopant issue, nanosized alumina particles were synthesized via co-precipitation to trap RE ions in the alumina lattice before calcination. The wet co-precipitation process allowed for high purity and homogeneous distribution of the RE ions within the particles. A...
Topics: DTIC Archive, Ku,Nicholas, US Army Research Laboratory Aberdeen Proving Ground United States,...
The burgeoning field of high-entropy alloys (HEAs) is underpinned by two foundational concepts, and early research has been motivated by several hypotheses known as core effects. The field is now entering its teenage years, and sufficient data have been collected to evaluate these hypotheses and to take a fresh look at the foundational concepts. Although recent assessments have concluded that two of the four HEA hypotheses are not supported by available data, new studies are already coming...
Topics: DTIC Archive, Miracle,Daniel B, AFRL Materials and Manufacturing Directorate Wright Patterson Air...
NUCu-140 and 10 wt% Ni steel were developed as candidate materials for use in naval and structural applications. However, prior to this research project, a fundamental understanding of the phase transformation behavior under the high heating and cooling rates associated with welding thermal cycles was not available for these alloys. For NUCu-140, the potential use of multiple thermal cycles was investigated with HAZ simulations using a Gleeble thermo-mechanical simulator. For 10 wt% Ni steel,...
Topics: DTIC Archive, DuPont, John N, Lehigh University, Department of Materials Science and Engineering...
This treatise thoroughly reviews the subjects of density, thermal expansion and compressibility of ice; snow density change attributed to destructive, constructive and melt metamorphism; and the physics of regelation and the effects on penetration rate of both the thermal properties of the wire and stress level. Heat capacity, latent heat of fusion and thermal conductivity of ice and snow over a wide range of temperatures were analyzed with regression techniques. In the case of snow, the effect...
Topics: DTIC Archive, Yen,Yin-Chao, COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH, *THERMAL...
This treatise thoroughly reviews the subjects of density, thermal expansion and compressibility of ice; snow density change attributed to destructive, constructive and melt metamorphism; and the physics of regelation and the effects on penetration rate of both the thermal properties of the wire and stress level. Heat capacity, latent heat of fusion and thermal conductivity of ice and snow over a wide range of temperatures were analyzed with regression techniques. In the case of snow, the effect...
Topics: DTIC Archive, Yen,Yin-Chao, COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH, *THERMAL...
This treatise thoroughly reviews the subjects of density, thermal expansion and compressibility of ice; snow density change attributed to destructive, constructive and melt metamorphism; and the physics of regelation and the effects on penetration rate of both the thermal properties of the wire and stress level. Heat capacity, latent heat of fusion and thermal conductivity of ice and snow over a wide range of temperatures were analyzed with regression techniques. In the case of snow, the effect...
Topics: DTIC Archive, Yen,Yin-Chao, COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH, *THERMAL...
This treatise thoroughly reviews the subjects of density, thermal expansion and compressibility of ice; snow density change attributed to destructive, constructive and melt metamorphism; and the physics of regelation and the effects on penetration rate of both the thermal properties of the wire and stress level. Heat capacity, latent heat of fusion and thermal conductivity of ice and snow over a wide range of temperatures were analyzed with regression techniques. In the case of snow, the effect...
Topics: DTIC Archive, Yen,Yin-Chao, COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH, *THERMAL...
This treatise thoroughly reviews the subjects of density, thermal expansion and compressibility of ice; snow density change attributed to destructive, constructive and melt metamorphism; and the physics of regelation and the effects on penetration rate of both the thermal properties of the wire and stress level. Heat capacity, latent heat of fusion and thermal conductivity of ice and snow over a wide range of temperatures were analyzed with regression techniques. In the case of snow, the effect...
Topics: DTIC Archive, Yen,Yin-Chao, COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH, *THERMAL...
This treatise thoroughly reviews the subjects of density, thermal expansion and compressibility of ice; snow density change attributed to destructive, constructive and melt metamorphism; and the physics of regelation and the effects on penetration rate of both the thermal properties of the wire and stress level. Heat capacity, latent heat of fusion and thermal conductivity of ice and snow over a wide range of temperatures were analyzed with regression techniques. In the case of snow, the effect...
Topics: DTIC Archive, Yen,Yin-Chao, COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH, *SNOW,...
This treatise thoroughly reviews the subjects of density, thermal expansion and compressibility of ice; snow density change attributed to destructive, constructive and melt metamorphism; and the physics of regelation and the effects on penetration rate of both the thermal properties of the wire and stress level. Heat capacity, latent heat of fusion and thermal conductivity of ice and snow over a wide range of temperatures were analyzed with regression techniques. In the case of snow, the effect...
Topics: DTIC Archive, Yen,Yin-Chao, COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH, *THERMAL...
This treatise thoroughly reviews the subjects of density, thermal expansion and compressibility of ice; snow density change attributed to destructive, constructive and melt metamorphism; and the physics of regelation and the effects on penetration rate of both the thermal properties of the wire and stress level. Heat capacity, latent heat of fusion and thermal conductivity of ice and snow over a wide range of temperatures were analyzed with regression techniques. In the case of snow, the effect...
Topics: DTIC Archive, Yen,Yin-Chao, COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH, *THERMAL...
This treatise thoroughly reviews the subjects of density, thermal expansion and compressibility of ice; snow density change attributed to destructive, constructive and melt metamorphism; and the physics of regelation and the effects on penetration rate of both the thermal properties of the wire and stress level. Heat capacity, latent heat of fusion and thermal conductivity of ice and snow over a wide range of temperatures were analyzed with regression techniques. In the case of snow, the effect...
Topics: DTIC Archive, Yen,Yin-Chao, COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH, *THERMAL...
This treatise thoroughly reviews the subjects of density, thermal expansion and compressibility of ice; snow density change attributed to destructive, constructive and melt metamorphism; and the physics of regelation and the effects on penetration rate of both the thermal properties of the wire and stress level. Heat capacity, latent heat of fusion and thermal conductivity of ice and snow over a wide range of temperatures were analyzed with regression techniques. In the case of snow, the effect...
Topics: DTIC Archive, Yen,Yin-Chao, COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH, *THERMAL...
Electron microscopy, X-ray energy dispersive spectroscopy, and tomographic reconstructions were used to characterize a high entropy alloy predominantly composed of refractory elements. The intragranular microstructure was found to consist of a periodic two phase mixture, where a disordered bcc phase is aligned orthogonally in an ordered B2 phase. The phases were found to exhibit continuous lattice registry and an orientation relationship given by 100 bcc//100 B2, {001}bcc//{001}B2. X-ray energy...
Topics: DTIC Archive, Senkov,O N, electron microscopy, electron tomography, xray computed tomography, phase...
Topics: DTIC Archive, Miracle,D B, UES INC DAYTON OH DAYTON United States, alloys, microstructure,...
A common problem in modern graph analysis is the detection of communities, an example of which is the detection of a single anomalously dense subgraph. Recent results have demonstrated a fundamental limit for this problem when using spectral analysis of modularity. In this paper, we demonstrate the implication of these results on community detection when a cue vertex is provided, indicating one of the vertices in the community of interest. Several recent algorithms for local community detection...
Topics: DTIC Archive, Miller,Benjamin A, MIT Lincoln Laboratory Lexington United States, graphs,...
Vanadium dioxide (VO2) is known to have a semiconductor-to-metal phase transition at 68C. Therefore, it can be used as a tunable component of an active metamaterial. The lamellar metamaterial studied in this work is composed of subwavelength VO2 and Au layers and is designed to undergo a temperature controlled transition from the optical hyperbolic phase to the metallic phase. VO2 films and VO2/Au lamellar metamaterial stacks have been fabricated and studied in electrical conductivity and...
Topics: DTIC Archive, Liberman,Vladimir, MASSACHUSETTS INST OF TECH LEXINGTON LEXINGTON United States, THIN...
Microstructure, phase composition and mechanical properties of a refractory high entropy super alloy, AlMo(sub 0.5)NbTa(sub 0.5)TiZr, are reported in this work. The alloy consists of a nano-scale mixture of two phases produced by the decomposition from a high temperature body-centered cubic (BCC) phase. The first phase is present in the form of cuboidal-shaped nano-precipitates aligned in rows along 100-type directions, has a disordered BCC crystal structure with the lattice parameter a(sub 1)...
Topics: DTIC Archive, Senkov,Oleg N, AFRL Materials and Manufacturing Directorate Wright Patterson Air...
The primary aim of this research project was to apply a novel topological and electronic-based model recently developed by the principal investigator in collaboration with the US Air Force Research Laboratory for accurately predicting compositions of new amorphous alloys specifically based on aluminium with properties superior to commercial crystalline metals and existing amorphous alloys. This research investigated alloy families that contained a variety of elements including Al, Cu, Ni, Zr,...
Topics: DTIC Archive, Laws,Kevin, UNIVERSITY OF NEW SOUTH WALES KENSINGTON Australia, crystal structure,...
Characterizing the fast evolution of microstructural defects is key to understanding crackling phenomena during the deformation of solid materials. For example, it has been proposed using atomistic simulations of crack propagation in elastic materials that the formation of a nonlinear hyperelastic or plastic zone around moving crack tips controls crack velocity. To date, progress in understanding the physics of this critical zone has been limited due to the lack of data describing the complex...
Topics: DTIC Archive, Ghaffari,H O, TEXAS UNIV AT ARLINGTON ARLINGTON United States, phase transformations,...
It is shown that densification of white cast iron powders under stress can be enhanced by multiple phase transformations through thermal cycling. This enhancement occurs by accelerated creep flow during phase changes (transformation superplasticity). The stress range where transformation-assisted densification can occur is shown to be between 1.7 MPa (250 psi) to 34.5 MPa (5000 psi). Below 1.7 MPa insufficient strain occurs during phase transformation to cause significant densification even...
Topics: DTIC Archive, Ruano,Oscar A, STANFORD UNIV CA DEPT OF MATERIALS SCIENCE AND ENGINEERING, *STRESSES,...
It is shown that densification of white cast iron powders under stress can be enhanced by multiple phase transformations through thermal cycling. This enhancement occurs by accelerated creep flow during phase changes (transformation superplasticity). The stress range where transformation-assisted densification can occur is shown to be between 1.7 MPa (250 psi) to 34.5 MPa (5000 psi). Below 1.7 MPa insufficient strain occurs during phase transformation to cause significant densification even...
Topics: DTIC Archive, Ruano,Oscar A, STANFORD UNIV CA DEPT OF MATERIALS SCIENCE AND ENGINEERING, *STRESSES,...
It is shown that densification of white cast iron powders under stress can be enhanced by multiple phase transformations through thermal cycling. This enhancement occurs by accelerated creep flow during phase changes (transformation superplasticity). The stress range where transformation-assisted densification can occur is shown to be between 1.7 MPa (250 psi) to 34.5 MPa (5000 psi). Below 1.7 MPa insufficient strain occurs during phase transformation to cause significant densification even...
Topics: DTIC Archive, Ruano,Oscar A, STANFORD UNIV CA DEPT OF MATERIALS SCIENCE AND ENGINEERING, *STRESSES,...
It is shown that densification of white cast iron powders under stress can be enhanced by multiple phase transformations through thermal cycling. This enhancement occurs by accelerated creep flow during phase changes (transformation superplasticity). The stress range where transformation-assisted densification can occur is shown to be between 1.7 MPa (250 psi) to 34.5 MPa (5000 psi). Below 1.7 MPa insufficient strain occurs during phase transformation to cause significant densification even...
Topics: DTIC Archive, Ruano,Oscar A, STANFORD UNIV CA DEPT OF MATERIALS SCIENCE AND ENGINEERING, *STRESSES,...
It is shown that densification of white cast iron powders under stress can be enhanced by multiple phase transformations through thermal cycling. This enhancement occurs by accelerated creep flow during phase changes (transformation superplasticity). The stress range where transformation-assisted densification can occur is shown to be between 1.7 MPa (250 psi) to 34.5 MPa (5000 psi). Below 1.7 MPa insufficient strain occurs during phase transformation to cause significant densification even...
Topics: DTIC Archive, Ruano,Oscar A, STANFORD UNIV CA DEPT OF MATERIALS SCIENCE AND ENGINEERING, *STRESSES,...
It is shown that densification of white cast iron powders under stress can be enhanced by multiple phase transformations through thermal cycling. This enhancement occurs by accelerated creep flow during phase changes (transformation superplasticity). The stress range where transformation-assisted densification can occur is shown to be between 1.7 MPa (250 psi) to 34.5 MPa (5000 psi). Below 1.7 MPa insufficient strain occurs during phase transformation to cause significant densification even...
Topics: DTIC Archive, Ruano,Oscar A, STANFORD UNIV CA DEPT OF MATERIALS SCIENCE AND ENGINEERING, *STRESSES,...
It is shown that densification of white cast iron powders under stress can be enhanced by multiple phase transformations through thermal cycling. This enhancement occurs by accelerated creep flow during phase changes (transformation superplasticity). The stress range where transformation-assisted densification can occur is shown to be between 1.7 MPa (250 psi) to 34.5 MPa (5000 psi). Below 1.7 MPa insufficient strain occurs during phase transformation to cause significant densification even...
Topics: DTIC Archive, Ruano,Oscar A, STANFORD UNIV CA DEPT OF MATERIALS SCIENCE AND ENGINEERING, *STRESSES,...
It is shown that densification of white cast iron powders under stress can be enhanced by multiple phase transformations through thermal cycling. This enhancement occurs by accelerated creep flow during phase changes (transformation superplasticity). The stress range where transformation-assisted densification can occur is shown to be between 1.7 MPa (250 psi) to 34.5 MPa (5000 psi). Below 1.7 MPa insufficient strain occurs during phase transformation to cause significant densification even...
Topics: DTIC Archive, Ruano,Oscar A, STANFORD UNIV CA DEPT OF MATERIALS SCIENCE AND ENGINEERING, *STRESSES,...