The W-Ta-Mo-Cb alloy system was previously investigated, and several tungsten- and tantalumrich alloys were developed and evaluated in the form of extruded bars. Many of these alloys exhibited very high strengths at 3000 F. Effort was aimed at producing and evaluating alloys from the W-Ta-Mo-Cb system in the form of sheet (Phase I) and increasing its high-temperature strength by the formation of dispersed carbides (Phase II). For Phase I, small cylindrical ingots of six selected alloys and...
Topics: DTIC Archive, Thompson, V R, CRUCIBLE STEEL CO OF AMERICA PITTSBURGH PA, *REFRACTORY METAL ALLOYS,...
In this investigation, flow behavior of Ti-6Al-4V ELI alloy was studied by conducting compression tests over a wide range of temperatures and strain rates. Constitutive relations were determined from the flow behavior, and a dynamic material modeling was conducted on this alloy. Thus, the optimum processing condition in terms of temperature and strain rate was identified. Microstructural changes during high temperature deformation were also characterized.... Ti-6Al-4V ELI, Deformation...
Topics: DTIC Archive, Chaudhury, Prabir, NATIONAL CENTER FOR EXCELLENCE IN METALWORKING TECHNOLOGY...
In this investigation, flow behavior of Aluminum 6009 alloy was studied by conducting compression tests over a wide range of temperatures and strain rates. Stress-strain curves were recorded for each test condition. These data are essential in metalworking process design or finite element analysis of high temperature deformation.
Topics: DTIC Archive, Kuhn, Howard A, NATIONAL CENTER FOR EXCELLENCE IN METALWORKING TECHNOLOGY JOHNSTOWN...
In this investigation, flow behavior of Haynes 230 alloy was studied by conducting compression tests over a wide range of temperatures and stain rates. Constitutive relations were determined from the flow behavior, and a dynamic material modeling was performed on this alloy. Thus, the optimum processing condition in terms of temperature and during high temperature deformation were also characterized.... Haynes 230, Deformation processing, High temperature deformation, Processing map,...
Topics: DTIC Archive, Chaudhury, Prabir, NATIONAL CENTER FOR EXCELLENCE IN METALWORKING TECHNOLOGY...
The U.S. Navy, like other Department of Defense services, is challenged to deliver needed capability in an austere budget environment. The Navy Manufacturing Technology Program (ManTech) plays a critical role in the Navy s ability to meet its affordability and performance challenges. The ManTech Program, including the Navy Metalworking Center (NMC), continues to execute an investment strategy that helps key acquisition Program Offices achieve their affordability goals. Our strategy includes the...
Topics: DTIC Archive, NAVY METALWORKING CENTER JOHNSTOWN PA, *METALWORKING, *NAVAL VESSELS, ABRASIVES,...
In this investigation, flow behavior of Aluminum-1.5% Copper alloy was studied by conducting compression tests over a wide range of temperatures and strain rates. Stress strain curves were recorded for each test condition. These data are essential in metalworking process design or finite element analysis of high temperature deformation.
Topics: DTIC Archive, Kuhn, Howard A, NATIONAL CENTER FOR EXCELLENCE IN METALWORKING TECHNOLOGY JOHNSTOWN...
In this investigation, flow behavior of Aluminum 6061 alloy was studied by conducting compression tests over a wide range of temperatures and strain rates. Stress-strain curves were recorded for each test condition. These data are essential in metalworking process design or finite element analysis of high temperature deformation.
Topics: DTIC Archive, Kuhn, Howard A, NATIONAL CENTER FOR EXCELLENCE IN METALWORKING TECHNOLOGY JOHNSTOWN...
Topics: DTIC Archive, Semenov,Yu N, FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO, *POWDER METALS,...
Topics: DTIC Archive, JOINT PUBLICATIONS RESEARCH SERVICE ARLINGTON VA, *COMPOSITE MATERIALS, *METALLURGY,...
Improving the way metallic materials whether they re traditional steel alloys, high strength naval steels, lightweight alloys, or corrosion-resistant metals are fabricated and integrated into ship and aircraft structures can have a major impact on reducing acquisition and total ownership cost. NMC projects develop and implement a wide range of metalworking processes and technologies to improve the performance of Navy weapons system components.
Topics: DTIC Archive, CONCURRENT TECHNOLOGIES CORP JOHNSTOWN PA, *METALWORKING, ALLOYS, CORROSION...
In this investigation, flow behavior of Nickelvac C-276 alloy was studied by conducting compression tests over a wide range of temperatures (950 - 1200 C) and strain rates (0.001 - 20 s-1). The true stress strain flow curves are presented for each test condition. Constitutive relations were determined from the flow behavior, and a dynamic material modeling was performed on this alloy. Thus, the optimum processing condition in terms of temperature and strain rate was identified as 1075 C and...
Topics: DTIC Archive, Chaudhury, Prabir K, NATIONAL CENTER FOR EXCELLENCE IN METALWORKING TECHNOLOGY...
In this investigation, flow behavior of Hastelloy C-22 was studied by conducting compression tests at various temperatures and strain rates. Constitutive relations were determined from the flow behavior, and a dynamic material modeling for this alloy was performed. Thus, the optimum processing condition in terms of temperature and strain rate was determined. Microstructural changes during high temperature deformation were also characterized to aid process design engineers to select processing...
Topics: DTIC Archive, Chaudhury, Prabir, NATIONAL CENTER FOR EXCELLENCE IN METALWORKING TECHNOLOGY...
In this investigation, flow behavior of Aluminum 6063 alloy was studied by conducting compression tests over a wide range of temperatures and strain rates. Stress-strain curves were recorded for each test condition. These data are essential in metalworking process design or finite element analysis of high temperature deformation.
Topics: DTIC Archive, Kuhn, Howard A, NATIONAL CENTER FOR EXCELLENCE IN METALWORKING TECHNOLOGY JOHNSTOWN...
In this investigation, flow behavior of Allvac 718 alloy was studied by conducting compression tests over a wide range of temperatures (850 - 1150 C) and strain rates (0.001 - 20 s-1). The true stress-true strain flow curves are presented for each test condition. Constitutive relations were determined from the flow behavior, and a dynamic material modeling was performed on this alloy. Thus, the optimum processing condition in ten-ns of temperature and strain rate was identified as 1025 C and...
Topics: DTIC Archive, Chaudhury, Prabir K, NATIONAL CENTER FOR EXCELLENCE IN METALWORKING TECHNOLOGY...
This report covers work carried out in the past six months on the following subjects. (1) The various casting systems built during the first six months of the contract period were modified and improved. A new technique was developed for the production of Rheocast ingots of low temperature alloys semi- continuously. A 400 ton Lester cold chamber horizontal die casting machine was acquired and is being installed for future experiments. (2) The important variables in a continuous slurry producer,...
Topics: DTIC Archive, Mehrabian, R, ILLINOIS UNIV AT URBANA DEPT OF MECHANICAL AND INDUSTRIAL ENGINEERING,...
In this investigation, flow behavior of Super alpha2 titanium aluminide was studied by conducting compression tests over a wide range of temperatures and strain rates. Constitutive relations were determined from the flow behavior, and a dynamic material modeling was conducted on this alloy. Thus, the optimum processing condition in terms of temperature and strain rate was identified. Microstructural changes during high temperature deformation were also characterized.
Topics: DTIC Archive, Chaudhury, Prabir K, NATIONAL CENTER FOR EXCELLENCE IN METALWORKING TECHNOLOGY...
Recent advances in the development of the aluminum stabilized NbTi superconductor have great potential for military and commercial applications such as mine sweeping and magnetic resonance imaging (MRI). Producing long, low-cost conductors requires either improving the current technology or developing new approaches to aluminum cladding and conductor forming processes. However, these cladding and forming processes should be coupled with concurrent product and process design based on material...
Topics: DTIC Archive, Kajuch, Jan, NATIONAL CENTER FOR EXCELLENCE IN METALWORKING TECHNOLOGY JOHNSTOWN PA,...
In this investigation, flow behavior of Chromium Steel was studied by conducting compression tests over a wide range of temperatures and strain rates. Stress-strain curves were recorded for each test condition. These data are essential in metalworking process design or finite element analysis of high temperature deformation.
Topics: DTIC Archive, Kuhn, Howard A, NATIONAL CENTER FOR EXCELLENCE IN METALWORKING TECHNOLOGY JOHNSTOWN...
In this investigation, flow behavior of Inconel 600 alloy was studied by conducting compression tests over a wide range of temperatures and strain rates. Stress-strain curves were recorded for each test condition. These data are essential in metalworking process design or finite element analysis of high temperature deformation.
Topics: DTIC Archive, Kuhn, Howaard A, NATIONAL CENTER FOR EXCELLENCE IN METALWORKING TECHNOLOGY JOHNSTOWN...
Alloy 625, a nickel-based alloy, is difficult to form, particularly at room temperature. A Navy Metalworking Center (NMC) project minimized potentially significant schedule delays for the construction of the CVN 78 aircraft carrier by identifying optimal forming practices for Alloy 625 in several critical components as well as by evaluating the corrosion performance of the Alloy 625-to-HSLA (high strength, low alloy) steel welds. Using the project findings, Northrop Grumman Shipbuilding-Newport...
Topics: DTIC Archive, NAVY METALWORKING CENTER JOHNSTOWN PA, *METALWORKING, *NAVAL AIRCRAFT, *NICKEL...
In this investigation, flow behavior of Aluminum 7050 alloy was studied by conducting compression tests over a wide range of temperatures and strain rates. Stress-strain curves were recorded for each test condition. These data are essential in metalworking process design or finite element analysis of high temperature deformation.... Aluminum 7050, High Temperature Deformation, Metalworking.
Topics: DTIC Archive, Kuhn, Howard A, NATIONAL CENTER FOR EXCELLENCE IN METALWORKING TECHNOLOGY JOHNSTOWN...
In this investigation, flow behavior of Nickelvac K-500 alloy was studied by conducting compression tests over a wide range of temperatures and strain rates. Constitutive relations were determined from the flow behavior, and dynamic material modeling was conducted on this alloy. Thus, the optimum processing condition in terms of temperature and strain rate was identified. Microstructural changes during high temperature deformation were also characterized.
Topics: DTIC Archive, Chaudhury, Prabir K, NATIONAL CENTER FOR EXCELLENCE IN METALWORKING TECHNOLOGY...
In this investigation, flow behavior of Permalloy - 80 alloy was studied by conducting compression tests over a wide range of temperatures (I 1112 - 2192 F) at high strain rates (1-10 s- 1). The true stress-true strain flow curves are presented for each test condition. This report supplies ample mechanical property data on Permalloy - 80 alloy for mechanical and materials engineers in the field of metalworking process design. The data presented here are also very helpful in finite element...
Topics: DTIC Archive, Kuhn, Howard A, NATIONAL CENTER FOR EXCELLENCE IN METALWORKING TECHNOLOGY JOHNSTOWN...
In this investigation, flow behavior of Aluminum 3004 alloy was studied by conducting compression tests over a wide range of temperatures and strain rates. Stress-strain curves were recorded for each test condition. These data are essential in metalworking process design or finite element analysis of high temperature deformation.
Topics: DTIC Archive, Kuhn, Howard A, NATIONAL CENTER FOR EXCELLENCE IN METALWORKING TECHNOLOGY JOHNSTOWN...
The 21st Century security environment requires that we expand and transform the U.S. Navy's warfighting capabilities, delivering vessels that are faster, stronger and more agile. The nature of open-ocean and littoral missions is changing; ships are being called upon to conduct both traditional combat operations on world seas and to fight high-speed, multi-threat missions in shallow waters. The U.S. Navy Manufacturing Technology (MANTECH) Program is diligent in its pursuit of what President...
Topics: DTIC Archive, NATIONAL CENTER FOR EXCELLENCE IN METALWORKING TECHNOLOGY JOHNSTOWN PA, *ALLOYS,...
In this investigation, flow behavior of Waspaloy alloy was studied by conducting compression tests over a wide range of temperatures and strain rates. Constitutive relations were determined from the flow behavior, and a dynamic material modeling was conducted on this alloy. Thus, the optimum processing condition in terms of temperature and strain rate was identified. Microstructural changes during high temperature deformation were also characterized.
Topics: DTIC Archive, Chaudhury, Prabir K, NATIONAL CENTER FOR EXCELLENCE IN METALWORKING TECHNOLOGY...
In this investigation, flow behavior of Inconel 718 alloy was studied by conducting compression tests over a wide range of temperatures and strain rates. Constitutive relations were determined from the flow behavior, and a dynamic material modeling was conducted on this alloy. Thus, the optimum processing condition in terms of temperature and strain rate was identified. Microstructural changes during high temperature deformation were also characterized.
Topics: DTIC Archive, Chaudhury, Prabir K, NATIONAL CENTER FOR EXCELLENCE IN METALWORKING TECHNOLOGY...
In this investigation, flow behavior of Inconel 625 alloy was studied by conducting compression tests over a wide range of temperatures and strain rates. Stress-strain curves were recorded for each test condition. These data are essential in metalworking process design or finite element analysis of high temperature deformation.
Topics: DTIC Archive, Kuhn, Howard A, NATIONAL CENTER FOR EXCELLENCE IN METALWORKING TECHNOLOGY JOHNSTOWN...
In this investigation, flow behavior of Al-TiC XD Composite was studied by conducting compression tests over a range of temperatures and strain rates. The workability of the material was determined for each test condition. Some corresponding microstructure was also examined. These data are essential in metalworking process design or finite element analysis of high temperature deformation.... Al-TiC XD Composite, High Temperature Deformation, Metalworking.
Topics: DTIC Archive, Kuhn, Howard A, NATIONAL CENTER FOR EXCELLENCE IN METALWORKING TECHNOLOGY JOHNSTOWN...
World events have emphasized the importance of developing light weight, high-performance materials, especially those that can be used in armor and blast resistance structures. Recent work at Penn State's Applied Research Laboratory has produced some high performance aluminum alloys. These materials, produced by Spray Metal Forming, have superior properties which have shown potential for use in military vehicles to provide light-weight ballistic protection.
Topics: DTIC Archive, PENNSYLVANIA STATE UNIV UNIVERSITY PARK APPLIED RESEARCH LAB INST FOR MANUFACTURING...
Topics: DTIC Archive, Figlin,S Z, FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO, *TURBINE BLADES,...
The program conducted for the U. S. Army Missile Command from April 15 through Jul 15, 1974, investigated alternative manufacturing methods for producing the 70-mm LAWT warhead body. The objective was to determine the technical feasibilities, production potentials, and unit costs involved for each method when based on a production quota of 40,000 units per month to produce the warhead body from the aluminum alloy 7075 heat treated to the T6 condition (yield stress range 30,000 to 85,000 psi)....
Topics: DTIC Archive, Olofson, C T, Hoffmanner, A L, BATTELLE COLUMBUS DIV OH, *GUIDED MISSILES,...
We have characterized the transformation behavior and microstructural evolution of new ultra-low carbon (ULC) welding consumables being developed for Naval applications by the National Center for Excellence in Metalworking Technology (NCEMT). This is the first systematic study of these ULC alloys combining dilatometric analysis and transmission electron microscopy (TEM) with more conventional characterization techniques to identify in detail the microstructures produced at various cooling rates...
Topics: DTIC Archive, Fonda, R. W., NAVAL RESEARCH LAB WASHINGTON DC, *MICROSTRUCTURE,...
Topics: DTIC Archive, Pisarenko,G S, FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO,...
In order to understand the microstructure of 50V0 nickel - 50% chromium alloy produced using spray forming, 3 mm diameter disks of the alloy were cut from several samples. The disks were thinned by electrochemical jet polishing using a mixture of HJP04 and H2S04. The microstructure is very complex. Some areas showed a composite structure of spherical 5- (Cr-Ni) particles imbedded in a dimpled matrix of Cr-Ni. Some areas had a distribution of spherical 8- (Cr-Ni) and Cr-Ni imbedded in planar...
Topics: DTIC Archive, Rao, A S, NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD SURVIVABILITY...
Rods and tubes of 350 maraging steel were extruded from rotating electrode process powder and from cast-and-wrought bar stock from two sources. Samples from the rods and tubes received various heat treatments and were then subjected to tests of tensile behavior and impact resistance. The results of these tests and metallographic examination are presented and discussed as they are affected by factors such as material source and heat treatment. Consideration is given to scale-up to larger...
Topics: DTIC Archive, Isserow, Saul, ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MA, *MARAGING...
The influence of metallurgical and process variables on the consolidation, densification, and properties of rapidly solidified aluminum alloy powders was investigated. Cold compaction, hot pressing, powder extrusion, and explosive consolidation were used to consolidate rapidly solidified 99.9% aluminum powder. The alloys included in the study provide wide variations in hardness, flow stress, work hardening rate, plasticity, and oxide-film thickness. The consolidation techniques for the study...
Topics: DTIC Archive, Sastry,S M, MCDONNELL DOUGLAS RESEARCH LABS ST LOUIS MO, *ALUMINUM ALLOYS,...
This report describes the results of a three-year research program to study the relationship between microstructure and processing conditions and the effects of processing conditiins on the performance of structural airframe materials. Part I of the program was an examination of the influence of beta processing methods on the interaction of fatigue cracks with microstructural elements. These beta-phase processing methods were chosen to provide variations in beta-phase volume fraction and...
Topics: DTIC Archive, Rhodes,C G, ROCKWELL INTERNATIONAL THOUSAND OAKS CA SCIENCE CENTER, *PROCESSING,...
Depleted uranium is produced from the UF6 tailings of the uranium enrichment process for nuclear power reactors and contains about 99.8 percent U238 and 0.2 percent U235. This report presents properties, processing, and fabrication information for depleted uranium alloys. Efforts are underway to use this material in non-nuclear applications since its supply is large and growing. Depleted uranium alloys can be shaped into parts by conventional metal processing. The main problem is reactivity...
Topics: DTIC Archive, Olofson, Carl T., Meyer, George E., Hoffmanner, Albert L., METALS AND CERAMICS...
In this investigation, flow behavior of Haynes 556 alloy was studied by conducting compression tests over a wide range of temperatures (950 - 1200 C) and strain rates (0.001 - 20 /s). The true stress-true strain flow curves are presented for each test conditions. Constitutive relations were determined from the flow behavior, and a dynamic material modeling was performed on this alloy. Thus, the optimum processing condition in terms of temperature and strain rate was identified as 1125 C and...
Topics: DTIC Archive, Chaudhury, Prabir K, NATIONAL CENTER FOR EXCELLENCE IN METALWORKING TECHNOLOGY...
Partial contents include the following: (1) Titanium process modelling; (2) Alloy theory and phase transformations in titanium alloys; (3) Microstructure-property relationships in titanium alloys; (4) Fatigue and fracture toughness properties of Ti-6Al-4V with Acicular Alpha Microstructures; (5)The effect of thermal treatment on the cryogenic mechanical properties of cast 5Al-2.5Sn ELI titanium; (6) Oxygen effects on the mechanical properties of Timetal-21S; (7) Effect of cold work and heat...
Topics: DTIC Archive, MINERALS METALS AND MATERIALS SOCIETY WARRENDALE PA, *THERMAL PROPERTIES, *MECHANICAL...
This report covers the work under Task C of Contract F33615-83-C- 3208. An SPF based A-10 nose landing gear door was designed using Supral 220 alloy: The part count for the basic door was reduced to 4 components as compared to 52 for the conventional construction method. The superplastic pan comprising the stiffening structure of the door was assembled to the external skin using the ultrasonic weldbonding process. The SPF based door and conventional door were supplied to AFFDL for static...
Topics: DTIC Archive, Renshaw, T, FAIRCHILD REPUBLIC CO FARMINGDALE NY, *METALWORKING, *AIRCRAFT DOORS,...
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Topics: MACHINING, 3D MACHINING, MANUFACTURING, MILLING, MACHINE SHOP, BRASS, METAL, TOOL, ELECTRICAL...
Aluminum Alloy castings have been successfully reinforced with unidirectional graphite fibers. The reinforced castings were fabricated using an innovative technique known as high pressure squeeze casting. Previously, squeeze casting has been recognized as a superior metal forming method. The materials fabricated in this study demonstrate the ability of squeeze casting to achieve good fiber distribution and infiltration without the need for pretreatment of the fibers. There was very little...
Topics: DTIC Archive, Sample, Robert J, PENNSYLVANIA STATE UNIV UNIVERSITY PARK APPLIED RESEARCH LAB,...
Experimental and selected commercially available sheet forming lubricants were evaluated by two friction testing techniques; (1) strip-drawing with only elastic workpiece loads and (2) ring compression testing where plastic deformation of the workpiece occurred. Material and test variables examined were; (1) two workpiece materials Al-7075 and Ti-6Al-4V, (2) eight lubricants coatings, (3) three levels of hold-down pressure and deformation amount, (4) two die roughness conditions, (5) two...
Topics: DTIC Archive, Gurney,F J, WESTINGHOUSE ELECTRIC CORP PITTSBURGH PA ADVANCED ENERGY SYSTEMS DIV,...
In this investigation, flow behavior of Ultimet alloy was studied by conducting compression tests over a wide range of temperatures (950-1200 C) and strain rates (0.001-20/s). The true stress-true strain flow curves are presented for each test condition. Constitutive relations were determined from the flow behavior, and a dynamic material modeling was performed on this material. Thus, the optimum processing condition in terms of temperature and strain rate was identified as 1012 C and 0.001/s...
Topics: DTIC Archive, NATIONAL CENTER FOR EXCELLENCE IN METALWORKING TECHNOLOGY JOHNSTOWN PA, *DEFORMATION,...
This report summarizes the findings of research conducted on metal processing over a two year period. The research included the study of the occurrence of the central burst defect in 7075 Al, the effect of hydrogen on the flow stress of Ti6Al-4V and other titanium alloys (CP-Ti, Ti-5Al-2.5Sn) and the design and use of a high sensitivity load cell. Information derived from this and past research was applied to the processing of numerous metal working operations of other alloys. (Author)
Topics: DTIC Archive, Gurney,F J, WESTINGHOUSE ELECTRIC CORP PITTSBURGH PA ADVANCED ENERGY SYSTEMS DIV,...
This report is a guide to the literature on high-velocity metalworking. It consists primarily of abstracts of articles, reports, books, and current research projects on and related to high-velocity metalworking arranged according to technical subject. It covers a survey of the reported work in the field up to about October of 1962. Abstracts of over 700 references have been arranged by subject matter, with cross indexing between subjects. There is also an author index. The eleven major subjects...
Topics: DTIC Archive, Strohecker, D C, BATTELLE MEMORIAL INST COLUMBUS OH DEFENSE METALS INFORMATION...
Throughout this century, the plate working industry has searched for improved techniques for the production of cylindrical hollow sections (hereinafter called shells) out of steel and other metal plates. A series of different techniques and machines have been developed. Improved and progressed to cope with the ever growing complexity of this industry, these technological changes demand continuous advances in machinery and techniques to keep up with the ever expanding program of the plate shop,...
Topics: DTIC Archive, Roggendorff, Stephen L, AVONDALE SHIPYARDS INC NEW ORLEANS LA, *SHELLS(STRUCTURAL...
In this investigation, flow behavior of Haynes 188 alloy was studied by conducting compression tests over a wide range of temperatures (950 - 1200 C) and strain rates (0.001 - 20 /s). The true stress-true strain flow curves are presented for each test condition. Constitutive relations were determined from the flow behavior, and a dynamic material modeling was performed on this alloy. Thus, the optimum processing condition in terms of temperature and strain rate was identified as 1100 C and...
Topics: DTIC Archive, Chaudhury, Prabir K, NATIONAL CENTER FOR EXCELLENCE IN METALWORKING TECHNOLOGY...
