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Tungsten

Tungsten
Author: Erik Lassner
Publisher: Springer Science & Business Media
Total Pages: 432
Release: 2012-12-06
Genre: Science
ISBN: 1461549078

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Why does someone write a book about Tungsten? There are several reasons and precedents for this, the most important of which is that the last book on tungsten was written more than 20 years ago, in 1977, by St. W H. Yih and Ch T. Wang. During the intervening period there have been many new scientific and technological developments and innova tions, so it was not only our opinion but the view of many other members of the "tungsten family" that it was time to start writing a new book about tungsten. Preparations of the new book began in 1994. further impetus to the project was provided by the realization that in spite of this new knowledge having been presented at seminars or published in the technical press, a general acknowledgement of it by the majority of technicians and scientists is still far from being realized. It is our hope that this book will significantly contribute to a broader acceptance of recent scientific and technological innovations. An important prerequisite for such a project is the availability of a recently retired, experienced person willing to devote his time and talents to the tedious part of the exercise.


Nanostructures and Enhanced Properties in Tungsten and Its Alloys Processed by Equal Channel Angular Pressing

Nanostructures and Enhanced Properties in Tungsten and Its Alloys Processed by Equal Channel Angular Pressing
Author:
Publisher:
Total Pages: 5
Release: 2002
Genre:
ISBN:

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In this connection, in the frame of the third period of the present project there have been conducted experimental investigations, aimed at equal channel angular pressing (ECAP) optimization of the investigated W and the 90W-8Ni-2Fe alloy. The problem of this task consists in enhancing workability of these hard-to-deform materials and achieving large strains, The influence of the accumulated strain degree the thickness of protection casing, the rate and strain temperatures on grain size and homogeneity of the obtained structure have been investigated as parameters, determining ECAP results. ECAP has been realized on route C, which turns out to be the most effective route for the given case, as it has been found out at first stages of the project.


Investigation of the Mechanical Properties of Ultra-pure Tungsten

Investigation of the Mechanical Properties of Ultra-pure Tungsten
Author: Massachusetts Institute of Technology. Department of Metallurgy
Publisher:
Total Pages: 73
Release: 1961
Genre:
ISBN:

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Contents: Electron-beam zone melting Yielding and plastic flow in single crystals of tungsten Deformation of tantalum single crystals Flow and fracture of high purity tantalum tungsten alloys in the ductile-brittle transi tion region Void formation in tungsten above 2800 C.


Tungsten Research and Development Review

Tungsten Research and Development Review
Author: J. L. Ratliff
Publisher:
Total Pages: 70
Release: 1963
Genre: Research and development projects
ISBN:

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Government-sponsored tungsten research and development efforts encompass a broad rage of technological activities. Typifying the extreme limits of efforts since January, 1960, studies have ranged from preparation of unalloyed metal to development of high-integrity fabricated shapes of tungsten-base materials. Nine major areas outline the broad over-all effort, and each is summarized within this report by brief technical discussions of 104 separate studies on 79 research programs. Included are preparation of metal, consolidation, primary and secondary working, joining, fabrication and performance of rocket nozzles, oxidation and other high-temperature reactions, protective coatings, properties, and physical metallurgy.