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Elevated Temperature Ductility Minima And Creep Strengthening Of Coated And Uncoated Columbium Alloys
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Book Synopsis Elevated Temperature Ductility Minima and Creep Strengthening of Coated and Uncoated Columbium Alloys by : B. C. Allen
Download or read book Elevated Temperature Ductility Minima and Creep Strengthening of Coated and Uncoated Columbium Alloys written by B. C. Allen and published by . This book was released on 1967 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Elevated Temperature Ductility Minima and Creep Strengthening of Coated and Uncoated Columbium Alloys by : B. C. Allen
Download or read book Elevated Temperature Ductility Minima and Creep Strengthening of Coated and Uncoated Columbium Alloys written by B. C. Allen and published by . This book was released on 1967 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Phase 1 an investigation was made of factors affecting the tensile ductility minimum behavior of coated columbium alloys in air in the intermediate temperature range 700-1100 C. In the case of TRW Cr-Ti-Si coated Cb-10W and Cb-10W-2.5Zr(Cb-752 Alloy), contamination and embrittlement by air at the base of coating cracks is the major factor responsible for loss of ductility. Apparent mechanical interaction between coating and substrate palys a smaller role, but becomes more important with decreasing substrate thickness. The presence of zirconium and dynamic strengthening of the substrate have relatively little effect on ductility. A study of dynamic strengthening during creep of Cb-10W-2.5Zr and Cb-10W was the objective of Phase 2. All creep testing was done in a vacuum of 10 to the minus 6th power torr and under constant stress conditions. The temperature range of interest was 800-1200 C. In long-time creep tests, the usual dynamic strengthening process in the Cb-10W-2.5Zr alloy was complicated by additional hardening due to internal oxidation. The Cb-10W-2.5Zr alloy was considerably stronger in creep than Cb-10W. The possible strengthening effects of Zr are discussed. (Author).
Book Synopsis Technical Abstract Bulletin by : Defense Documentation Center (U.S.)
Download or read book Technical Abstract Bulletin written by Defense Documentation Center (U.S.) and published by . This book was released on 1967 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Creep of Columbium Alloys by : E. S. Bartlett
Download or read book Creep of Columbium Alloys written by E. S. Bartlett and published by . This book was released on 1963 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although much information on high-temperature tensile and stress-rupture properties for various columbium-base materials is readily available, only limited information concerning the more useful creep behavior of columbium alloys has been reported. These data are widely scattered throughout the literature, and little attempt has been made to rationalize the creep behavior of columbium alloys. The purpose of this memorandum is to compile and review existing creep data for columbium alloys to gain insight into their merits and limitations for time-dependent structural service. (Author).
Book Synopsis Development of Columbium Alloy WC3015 by : A. A. Tavassoli
Download or read book Development of Columbium Alloy WC3015 written by A. A. Tavassoli and published by . This book was released on 1971 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Abstracts of AF Materials Laboratory Reports by : Air Force Materials Laboratory (U.S.)
Download or read book Abstracts of AF Materials Laboratory Reports written by Air Force Materials Laboratory (U.S.) and published by . This book was released on 1968-07 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Research Council (U.S.). Committee on Coatings Publisher :National Academies ISBN 13 : Total Pages :236 pages Book Rating :4.1/5 (485 download)
Book Synopsis High-temperature Oxidation-resistant Coatings by : National Research Council (U.S.). Committee on Coatings
Download or read book High-temperature Oxidation-resistant Coatings written by National Research Council (U.S.). Committee on Coatings and published by National Academies. This book was released on 1970-01-01 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Short-Time Creep of Columbium and Tantalum Alloys at 2600 to 3200°F by : RA. Perkins
Download or read book Short-Time Creep of Columbium and Tantalum Alloys at 2600 to 3200°F written by RA. Perkins and published by . This book was released on 1974 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Uncoated Ta-17W and C129Y alloys and coated Ta-10W, C103, and C129Y alloys have been evaluated for short-time creep behavior at 2600 to 3200°F. The time for creep strains of up to 2 percent has been measured and the results have been used to derive empirical equations that predict short-time creep life in this temperature range. The equations give estimates of the time-to-creep strains of up to 2 percent at stress levels that will produce the maximum strain in 60 min or less. Silicide-base coatings appear to add to the creep strength of coated Ta-10W but have little added effect on the strength of the columbium-base alloys. The creep behavior of coated metals can be analyzed by the same empirical methods as those used for uncoated substrates. The results show that commercially available silicide coatings protect the substrate from oxidation with creep strains of up to 2 percent on exposures of 1 to 11⁄2 h in this temperature range.
Book Synopsis Ultrahigh-vacuum Creep Behavior of Columbium and Tantalum Alloys at 2000 ̊and 2200 ̊F for Times Greater Than 1000 Hours by : Robert H. Titran
Download or read book Ultrahigh-vacuum Creep Behavior of Columbium and Tantalum Alloys at 2000 ̊and 2200 ̊F for Times Greater Than 1000 Hours written by Robert H. Titran and published by . This book was released on 1966 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis S.A.E. Transactions by : Society of Automotive Engineers
Download or read book S.A.E. Transactions written by Society of Automotive Engineers and published by . This book was released on 1968 with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Ductile High-strength Chromium Alloys Phase II by : A. M. Filippi
Download or read book Development of Ductile High-strength Chromium Alloys Phase II written by A. M. Filippi and published by . This book was released on 1973 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Fasteners by : Society of Automotive Engineers
Download or read book Advanced Fasteners written by Society of Automotive Engineers and published by . This book was released on 1967 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Determination of Design Allowable Strength Properties of Elevated-Temperature Alloys--Part I--Coated Columbium Alloys by : R. J. FAVOR
Download or read book Determination of Design Allowable Strength Properties of Elevated-Temperature Alloys--Part I--Coated Columbium Alloys written by R. J. FAVOR and published by . This book was released on 1972 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Corrosion written by and published by . This book was released on 1991 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues include special section called Corrosion abstracts.
Book Synopsis Source Book on Materials for Elevated-temperature Applications by : Elihu F. Bradley
Download or read book Source Book on Materials for Elevated-temperature Applications written by Elihu F. Bradley and published by ASM International(OH). This book was released on 1979 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Report on the Elevated-temperature Properties of Selected Super-strength Alloys by : Ward F. Simmons
Download or read book Report on the Elevated-temperature Properties of Selected Super-strength Alloys written by Ward F. Simmons and published by . This book was released on 1954 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Elevated-temperature Creep and Tensile Properties of Three Columbium-base Alloys by :
Download or read book Elevated-temperature Creep and Tensile Properties of Three Columbium-base Alloys written by and published by . This book was released on 1962 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In work to develop materials for elevated temperature applications, binary niobium alloys containing either 2.37 wt% chromium, 3.34 wt% zirconium, or 5.21 wt% vanadium were fabricated to sheet by forging at 550 deg C and rolling at room temperature. All three alloys were completely recrystallized after 90% cold work (reduction in thickness) and a one hour anneal at 1150 deg C. Tensile tests on the annealed materials at 650, 800, 1000, 1150, and 1315 deg C indicated that chromium, zirconium, and vanadium are potent strengtheners of niobium. At 1000 deg C the 2.37 wt% chromium and the 5.21 wt% vanadium alloys had 0.2% offset yield strengths of 38,000 and 38,300 psi respectively. At 1315 deg C, the 3.34 wt% zirconium alloy had a 0.2% offset yield strength of 14,700 psi. Stresses to produce creep rates of 0.0001, 0.01, and 0.1% per hour were determined for all three alloys at 650, 800, and 1000 deg C. The vanadium alloy exhibited the greatest creep resistance, requiring stresses of 52,700, 40,000, and 15,500 psi to produce a creep rate of 0.001% per hour at 650, 800, and 1000 deg C respectively. This research indicated that significant improvement in the mechanical properties of niobium can be achieved by alloying without undue sacrifice of fabricability. (auth).
