Download or read book Physical and Mechanical Properties of Tantalum written by H. R. Ogden and published by . This book was released on 1959 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Engineering Properties of Tantalum and Tantalum Alloys written by F. F. Schmidt and published by . This book was released on 1963 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the results of a state-of-the-art survey covering tantalum and seven of its alloys. All data are given in tabular and graphical form covering some of the more important physical, mechanical, and metallurgical properties for each material. References are given at the conclusion of each material section.

Download or read book Mechanical Properties of Tantalum and Tantalum Alloys written by and published by . This book was released on 1967 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of the Properties of Tantalum and Its Alloys written by Frank F. Schmidt and published by . This book was released on 1961 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanical Properties of Tantalum and Tantalum Alloys written by Günther Rudolph and published by . This book was released on 1966 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Mechanical Properties of Tantalum with Special Reference to the Ductile brittle Transition written by G. Abowitz and published by . This book was released on 1963 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: The tensile behavior of dilute Ta-H and Ta-Mo alloys was studied as a function of alloying addition, grain size and test temperature at a constant strain rate. The results are interpreted in terms of the parameters sigma sub-i and k sub-y of the Petch equation. For Ta-H alloys at 25 C sigma sub-i was independent of hydrogen content whereas k sub-y increased with hydrogen content. Deformation twinning was not observed in Ta-H alloys either at 25 C or at -196 C. Dilute additions of Mo to Ta at 25 C resulted in an increase in k sub-y whereas sigma sub-i was unaffected. Twinning was observed at -196 C but not at 25 C.A large increase in ductility accompanied twinning.

Download or read book High temperature Mechanical Properties of Tantalum written by David C. Drennen 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 Scientific and Technical Aerospace Reports written by and published by . This book was released on 1970 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanical Properties of Some Tantalum Alloys written by George Lee Webb and published by . This book was released on 1970 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Influence of Boron Additions on Physical and Mechanical Properties of Arc melted Tungsten and Tungsten 1 Percent Tantalum Alloy written by Peter L. Raffo and published by . This book was released on 1966 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of boron additions on the physical and mechanical properties of arc-melted tungsten and a tungsten -1 percent tantalum alloy were investigated. Boron additions significantly refined the arc-melted grain size of tungsten. The 1-hour recrystallization temperature was initially increased by small boron additions (approx. 0.01 atomic percent boron), after which it decreased continuously with increasing boron content. High-temperature tensile tests showed that the boron additions produced an initial rapid rise in strength followed by a leveling off of the strength-composition curve. Boron in solid solution was postulated to be the cause of the rapid increase in strength.

Download or read book Niobium Molybdenum Tantalum and Tungsten written by R. Syre and published by . This book was released on 1961 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Mechanical Properties of Tantalum with Special Reference to the Ductile brittle Transition written by M. A. Adams and published by . This book was released on 1961 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tensile tests were made on specimens of commercial Ta of different grain-sizes, and the variation of lower yield stress with grain-size 2d was used to assess the effect of temperature (23, -78 and -196 deg C) and strain-rate (0.0019 and 0.0996 sec. at each temperature) on the parameters sigma sub i and k sub y in a Petch type equation. The results indicate that the sensitivity of the yield strength to temperature and strain-rate arises almost entirely from the effects that these variables produce on sigma sub i. The high resistance of Ta to brittleness has been confirmed, all of the specimens showing pronounced necking and predominantly fibrous fractures; on the fracture surfaces of the coarser grained specimens tested at -196 deg C (both strain rates) some cleavage facets were observed. The greater ductility of Ta relative to Nb, Mo, and mild steel is attributed to a low value of k sub y and a high value of shear modulus.

Download or read book Effects of Irradiation on the Mechanical Properties of Tantalum written by Charles K. Franklin and published by . This book was released on 1960 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Influence of Boron Additions on Physical and Mechanical Properties of Arc melted Tungsten and Tungsten 1 Percent Tantalum Alloy written by Peter L. Raffo and published by . This book was released on 1966 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Efffect of Interstitial Elements on the Mechanical Properties of Tantalum at Low Temperature written by Victor Bruce Lawson and published by . This book was released on 1961 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book High Temperature Mechanical Properties of Tantalum written by F. C. Holden and published by . This book was released on 1960 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recrystallization, tensile, and creep-rupture behavior of high-purity tantalum and two interstitial-containing tantalum alloys have been determined. After a 75 per cent cold reduction, tantalum was completely recrystallized on annealing 1 hr at 1200 C; this temperature was increased slightly by adding 560 ppm oxygen. Tensile properties up to 500 C were determined. It was shown that the influence of interstitials in causing discontinuous yielding could be correlated with diffusivities. The moderate (25,000 to 32,000 psi) tensile strength of unalloyed tantalum can be increased by cold working and by minor additions of interstitials. The creep resistance of tantalum is increased by interstitial additions at short times and moderate temperatures, but is relatively unaffected at higher temperatures and longer times. Cold work remains effective in strengthening tantalum up to 750 C.

Download or read book The Mechanical Properties of Tantalum with Special Reference to the Ductile brittle Transition written by G. T. Murray and published by . This book was released on 1963 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The lower yield stress-grain size relationship was studied in tantalum for two compositions; one consisting of a total interstitial at content of 72 ppm with the major constituent being oxygen, and the other containing primarily carbon (116 ppm) in which part of the carbon existed In the form of a finely dispersed carbide precipitate. These results were compared to those obtained earlier (1) on commercial tantalum containing a total interstitial content of about 200 ppm. The commercial tantalum exhibited significantly higher yield and flow stresses and correspondingly higher ri values. The carbon containing material showed the lowest yield stresses primarily because of its lower oxygen content. It was concluded that oxygen is much more effective than carbon in restricting dislocation movement. The effect of the carbide precipitate was to increase the work-hardening rate. The flow stresses, however, even in the presence of the carbide phase were lower than those observed for commercial tantalum.