Download or read book Ductile brittle Transition in the Refractory Metals written by F. R. Schwartzberg and published by . This book was released on 1959 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of Solutes on the Ductile to brittle Transition of Refractory Metals written by George T. Hahn and published by . This book was released on 1962 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: There appear to be two ways in which interstitials promote brittle behavior in Groups V-A and VI-A refractory metals: (1) By locating at the grain boundaries in the form of segregates of precipitates, promoting grain-boundary rupture and crack initiation; and (2) In solid solution by inhibiting dislocation movement and reducing the resistance to crack propagation. Both embrittling effects operate in Group VI-A metals; whereas, only the latter is significant in the Group V-A at the levels of purity currently achieved. The problem of reducing the low-temperature brittleness of Group V-A metals is readily solved through the purity route. Purification of Group V-A metals to interstitial levels well below the solubility limits may be readily accomplished either in the initial purification of the base metal or during melting or consolidation. There are three possible routes to solving the problem of the embrittling effect of interstitials on the Group VI-A metals: (1) the purity route, (2) through working, and (3) through alloying (thermodynamically through strong scavengers, by additions which modify the electron bonding, and via grain-refining dispersions). (Author).

Download or read book Properties of Refractory Metals written by Walter D. Wilkinson and published by . This book was released on 1969 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of the Relationship of Twinning to Brittle Fracture of Refractory Metals written by C. N. Reid and published by . This book was released on 1963 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first year's work on this program is reported. It is concluded that there is good evidence for brittle fracture induced by mechanical twinning in single crystals and polycrystalline Mo-C with grain sizes larger than 0.40 mm. However there is no evidence for such failures in Mo-C of grain size smaller than 0.25 mm, or in high-purity Cb. The effect of recrystallization texture on twinning is demonstrated, and the orientation dependence of twinning in Cb crystals is reported; a most unusual plastic instability is described in crystals of one orientation. It is shown that twinning in Mo-35Re occurs in bursts, which form in less than 2 mu sec; nucleation of twins occurs only at small strains but lateral growth takes place up to at least 12% strain.

Download or read book A Brief Review of Refractory Metals written by Robert Isaac Jaffee and published by . This book was released on 1959 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Reactor Irradiation on Ductile brittle Transition and Stress strain Behavior of Tungsten written by Charles L. Younger and published by . This book was released on 1970 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Behavior and Properties of Refractory Metals written by Thomas Edwin Tietz and published by . This book was released on 1965 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physical Metallurgy of Refractory Metals and Alloys written by E. M. Savitskii and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: The principal reasons which induced the authors to write this book and the features of the book are set forth in the preface to the Russian edition. That section of the science of metals which in Russian is called "metallovedenie" or the "physical chemistry of metals" is generally referred to in scientific and technical literature published in the English language by the term "physical metallurgy." These concepts are much broader than the term" metallography," used in the scientific and technical literature of various countries, and applied solely to research on the interrelationships of the structure and proper ties of metals and alloys. Each science must have its own subject and its own method of research. Certainly, all specialists will agree that metals and alloys, including their solid solutions, mechanical mix tures, and metallic compounds, form the subject of "physical metallurgy" or "physical chemis try of metals." The aim of this science. is to produce a theory and to elucidate the experimental relationships which ought finally to make it possible to calculate quantitatively alloys Of given properties for any working conditions and parameters.

Download or read book Refractory Metals and Alloys II written by M. Semchyshen and published by . This book was released on 1963 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Refractory Metal Alloys Metallurgy and Technology written by I. Machlin and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 493 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication documents Proceedings of the Symposium on Metal lurgy and Technology of Refractory Metal Alloys, held in Washington, D.C. at the Washington Hilton Hotel on April 25-26, 1968, under sponsorship of the Refractory Metals Committee, Institute of Metals Division, of the Metallurgical Society of AIME, and the National Aeronautics and Space Administration. The Symposium presented critical reviews of selected topics in refractory metal alloys, thereby contributing to an in-depth understanding of the state-of-the-art, and establishing a base line for further research, development, and application. This Symposium is fifth in a series of conferences on refractory metals, sponsored by the Metallurgical Society of AlME. Publications issuing from the conferences are valuable technical and historical source books, tracing the evolution of refractory metals from early laboratory alloying studies to their present status as useful engineering materials. Refractory metals are arbitrarily defined by melting point. A 0 melting temperature of over 3500 F was selected as the minimum for this Symposium, thus excluding chromium and vanadium, which logically could be treated with other refractory metals in Groups VA and VIA of the periodic table. The Refractory Metals Committee is planning reviews of chromium and vanadium in subsequent conferences.

Download or read book Materials Symposium 13 15 September 1961 Hotel Westward Ho Phoenix Arizona July 1961 written by and published by . This book was released on 1961 with total page 924 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Conference on New Technology written by and published by . This book was released on 1964 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Decade of Progress in Refractory Metals written by G. Mervin Ault and published by . This book was released on 1966 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA Technical Translation written by and published by . This book was released on 1971 with total page 1254 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book WADC Technical Report written by United States. Wright Air Development Division and published by . This book was released on 1961 with total page 1298 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of Strain Rate and Hydrogen Content on the Low Temperature Deformation Behavior of Columbium written by B. A. Wilcox and published by . This book was released on 1961 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Brazing 2nd Edition written by Mel M. Schwartz and published by ASM International. This book was released on 2003-01-01 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation. This second edition of a text on brazing includes revised material on tooling, design, materials, atmospheres, processing, and equipment. Several new topics are covered, including nanostructures and materials, microwave and laser brazing, more effective use of vacuum atmospheres, functionally gradient materials, and intermetallics. There is also more coverage of beryllium alloys, aluminum-lithium alloys, new titanium alloys, ceramic-to-metal brazing, composites, and ceramic-to-ceramic brazing. Case histories and problem-solving examples are included. Annotation (c)2003 Book News, Inc., Portland, OR (booknews.com)