The Application Of High Pressure In Metal Deformation Processing Report On An Informal Symposium Of The Metalworking Processes And Equipment Program
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The Application Of High Pressure In Metal Deformation Processing
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Author : F. W. Boulger
language : en
Publisher:
Release Date : 1964
The Application Of High Pressure In Metal Deformation Processing written by F. W. Boulger and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with Hydrostatic pressure categories.
On October 3, 1963, a symposium was sponsored by the Bureau of Naval Weapons, Metalworking Processes and Equipment Program, on the application of high pressure in metal-deformation processing. Past research has shown that superimposed hydrostatic pressure can significantly increase the ductility at fracture of various materials. These observations have stimulated considerable interest in applying this hydrostatic-pressure effect to metal deformation processing, where it was anticipated that improved ductility and fabricability of brittle materials could be realized. Hydrostatic extrusion and hydrodynamic compressive forging were two such fabrication techniques discussed at the symposium, and preliminary results were found to be encouraging. Another fabrication process that will be investigated in the near future is sheet drawing, where the effect of superimposed pressure improves the ductility to fracture, it was noted that pressure cycling did not improve either the strength or ductility of steels containing various amounts of carbon. In addition to the mechanical-property effects, hydrostatic pressure has been found to affect measurably, numerous metallurgical properties of metals and alloys. (Author).
U S Government Research Reports
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Author :
language : en
Publisher:
Release Date : 1964
U S Government Research Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with Science categories.
Metal Removal By Electrochemical Methods And Its Effects On Mechanical Properties Of Metals
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Author : John A. Gurklis
language : en
Publisher:
Release Date : 1965
Metal Removal By Electrochemical Methods And Its Effects On Mechanical Properties Of Metals written by John A. Gurklis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Chemical milling categories.
This report assembles and correlates information on the effects of electrochemical metal-removal (ECMR) processes on mechanical properties. Of special interest and concern are the effects of ECMR on fatigue strength. The report covers four electrochemical metal-removal processes: electrochemical machining (ECM), electrolytic grinding (EG), electrochemical milling, and electropolishing. General characteristics and applications of the four methods are presented and discussed; special emphasis is placed on ECM. The ECMR processes are especially useful in shaping high-strength and difficult-to-machine metals and alloys, as well as in shaping parts with unusual, complex, or fragile characteristics. (Author).
Department Of Defense Refractory Metals Sheet Rolling Program
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Author : D. J. Maykuth
language : en
Publisher:
Release Date : 1965
Department Of Defense Refractory Metals Sheet Rolling Program written by D. J. Maykuth and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Heat resistant alloys categories.
This report is the third of a series which will periodically summarize the status of the various contracts involved in the Department of Defense Refractory Metals Sheet Rolling Program. Under this program, selected candidate materials are being carried through one or more of the following consecutive phases: Phase I, development of a sheet-production practice; Phase II, establishment of minimum design data; and Phase III, evaluation of sheetfabrication characteristics. To the present time, 13 contracts have been funded or planned in support of the Phase I, II, and III activities. This report summarizes the status of each of these individual contracts as of November 1, 1964. The first section describes the overall program of the Department of Defense Refractory Metals Sheet Rolling Program. Following, in the order of their discussions, are sections dealing with fabricable molybdenum alloys, unalloyed tungsten, columbium alloys, and tantalum alloys. (Author).
Second Status Report Of The U S Government Metalworking Processes And Equipment Program
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Author : F. C. Holden
language : en
Publisher:
Release Date : 1964
Second Status Report Of The U S Government Metalworking Processes And Equipment Program written by F. C. Holden and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with Metals categories.
Oxidation Of Nickel And Cobalt Base Superalloys
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Author : Carl H. Lund
language : en
Publisher:
Release Date : 1965
Oxidation Of Nickel And Cobalt Base Superalloys written by Carl H. Lund and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Cobalt alloys categories.
This report presents information dealing with the oxidation of nickel- and cobalt-base superalloys. All of the superalloys will oxidize at high temperatures when oxygen is present in the enveloping atmosphere. The rate of oxidation depends upon alloy composition, temperature, oxygen concentration, oxides formed, diffusion rates of the metals in both base metal and oxide, diffusion rate of oxygen in the oxide, solubility of oxygen in the matrix, and a host of other variables. The effects of oxidation can be beneficial or they can be harmful. The first section of this report deals with the fundamentals of the oxidation of Ni-Cr and Co-Cr alloys. Subsequent sections discuss general surface oxidation, intergranular oxidation, other subsurface oxidation, and the effect of stress on the rate of oxidation. Numerous specific alloys are mentioned in the report; as an aid to the reader, the appendix contains an alloy index of the alloys mentioned in the report along with the compositions of the alloys, and the pages on which mention of the alloys is made.
Index To Dmic Reports And Memoranda
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Author : Battelle Memorial Institute. Defense Metals Information Center
language : en
Publisher:
Release Date : 1968
Index To Dmic Reports And Memoranda written by Battelle Memorial Institute. Defense Metals Information Center and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Alloys categories.
Premium Quality Aluminum Castings
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Author : K. R. Grube
language : en
Publisher:
Release Date : 1965
Premium Quality Aluminum Castings written by K. R. Grube and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Aluminum alloys categories.
Premium-quality castings are those which are guaranteed to show a specified high level of mechanical properties. The properties currently being achieved represent significant improvements over those which can be achieved in conventional aluminum-alloy castings and approach the properties currently obtainable in wrought aluminum alloys. These property advances are largely the result of improved casting technique and design. These castings are gradually finding acceptance and usage in aerospace applications, thanks to integrated efforts between the casting producers and their customers. (Author).
The Effects Of High Pressure High Temperature Hydrogen On Steel
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Author : Ellis E. Fletcher
language : en
Publisher:
Release Date : 1964
The Effects Of High Pressure High Temperature Hydrogen On Steel written by Ellis E. Fletcher and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with Steel categories.
This report deals with the deleterious effects of hydrogen gas on steel at elevated temperatures and/or pressures. Hydrogen attack on steels is manifest as decarburization, intergranular fissuring, or blistering. These conditions result in lowered tensile strength, ductility, and impact strength. The reaction of hydrogen with iron carbide to form methane is probably the most important chemical reaction involved in the attack on steel by hydrogen. Attack of steel at elevated temperatures and pressures is limited or prevented by the following measures: (1) use of steel alloyed with strong carbide-forming elements, (2) use of liners of resistant alloy steels, and (3) substitution of resistant nonferrous alloys.
Nuclear Science Abstracts
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Author :
language : en
Publisher:
Release Date : 1964
Nuclear Science Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with Nuclear energy categories.