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Author : H. R. Ogden
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.3/5 (91 download)
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:
Author : F. C. Holden
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.:/5 (125 download)
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.
Author : David C. Drennen
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.3/5 (91 download)
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:
Author : F. F. Schmidt
Publisher :
ISBN 13 :
Total Pages : 344 pages
Book Rating : 4.3/5 (91 download)
Download or read book Tantalum and Tantalum Alloys written by F. F. Schmidt and published by . This book was released on 1960 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Keith D. Sheffler
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (317 download)
Download or read book Mechanical Behavior of Tantalum-base T-111 Alloy at Elevated Temperature written by Keith D. Sheffler and published by . This book was released on 1969 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report investigates the mechanical behavior of tantalum T-111 alloy at high temperatures and ultrahigh vacuum.
Author : M. A. Adams
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (436 download)
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.
Author : Keith D. Sheffler
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (31 download)
Download or read book Mechanical Behavior of Tantalum-base T-111 Alloy at Elevated Temperature written by Keith D. Sheffler and published by . This book was released on 1969 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report investigates the mechanical behavior of tantalum T-111 alloy at high temperatures and ultrahigh vacuum.
Author : Paul E. Moorhead
Publisher :
ISBN 13 :
Total Pages : 34 pages
Book Rating : 4.:/5 (31 download)
Download or read book Survey of Properties of T-111 (Tantalum-8 Tungsten-2 Hafnium) written by Paul E. Moorhead and published by . This book was released on 1970 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael Victor Nathal
Publisher :
ISBN 13 :
Total Pages : 218 pages
Book Rating : 4.:/5 (664 download)
Download or read book Influence of Cobalt, Tantalum and Tungsten on the High Temperature Mechanical Properties of Single Crystal Nickel-base Superalloys written by Michael Victor Nathal and published by . This book was released on 1984 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : E. J. Rapperport
Publisher :
ISBN 13 :
Total Pages : 80 pages
Book Rating : 4.3/5 (91 download)
Download or read book Fundamental and Applied Research and Development in Metallurgy written by E. J. Rapperport and published by . This book was released on 1963 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : G. Abowitz
Publisher :
ISBN 13 :
Total Pages : 134 pages
Book Rating : 4.3/5 (91 download)
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.
Author : Herbert R. Babitzke
Publisher :
ISBN 13 :
Total Pages : 34 pages
Book Rating : 4.3/5 (91 download)
Download or read book Columbium and Tantalum Alloys Suitable for Use at High Temperatures written by Herbert R. Babitzke and published by . This book was released on 1964 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ruluff D. McIntyre
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (31 download)
Download or read book High-strength Tantalum Composite by Thermomechanical Working written by Ruluff D. McIntyre and published by . This book was released on 1970 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Improvement in tensile strength and microstructure of tantalum alloys by thermomechanical processing.
Author : M. V. Nathal
Publisher :
ISBN 13 :
Total Pages : 436 pages
Book Rating : 4.:/5 (664 download)
Download or read book Influence of Cobalt, Tantalum, and Tungsten on the High Temperature Mechanical Properties of Single Crystal Nickel-base Superalloys written by M. V. Nathal and published by . This book was released on 1984 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert L. Hammel
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.3/5 (91 download)
Download or read book Creep of Tantalum Under Cyclic Elevated Temperatures written by Robert L. Hammel and published by . This book was released on 1960 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Barry L. Mordike
Publisher :
ISBN 13 :
Total Pages : 48 pages
Book Rating : 4.3/5 (91 download)
Download or read book Mechanical Properties of Tantalum and Niobium Base Alloys written by Barry L. Mordike and published by . This book was released on 1970 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: The critical resolved shear stress of tantalum base alloys was measured from -196C to 300C and of niobium base alloys from -196C to 1800C. The behavior at low temperatures is complex. Certain features can, however, be recognized as significant: Both indirect and direct interactions contribute to the critical resolved shear stress. At high temperatures solid solution hardening is associated with an elastic interaction between solute atoms and dislocations. The modulus misfit parameter is more important than the size misfit parameter in describing the hardening.
Author : M. A. Adams
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (436 download)
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 28 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.
