Notch Sensitivity and Resistance to Tearing of Titanium Alloy Sheet PDF Download
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Author: S. V. Arnold
Publisher:
ISBN:
Category :
Languages : en
Pages : 26
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Book Description
Author: S. V. Arnold
Publisher:
ISBN:
Category :
Languages : en
Pages : 26
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Book Description
Author: F. C. Holden
Publisher:
ISBN:
Category : Titanium
Languages : en
Pages : 104
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Author: G. B. Espey
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 34
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Book Description
The 1-in. wide sharp edge notch tensile test was used to establish the notch sensitivity of several titanium sheet alloys including those of interest in the DOD Titanium Alloy Sheet Rolling Program. The influence of aging temperature was investigated in room-temperature tests and selected alloy conditions were also evaluated at -320 and -423 F. Room-temperature notch sensitivity develops with the aging reaction being most pronounced for the fully aged conditions and decreasing with overaging. A considerable reduction in notch sensitivity in some alloys can be obtained by overaging with relatively small loss in yield strength. At tensile strength to density ratios below about 1,000,000, the best ferritic steels known to the authors have notch sensitivities essentially equal to the poorest of the titanium alloys investigated. At higher strength to density values, the superiority of the titanium alloys rapidly increases. However, it should be noted that the strongest conditions of the titanium alloys possess fracture toughness, KC2, values sufficiently low that careful attention must be given to elimination of flaws in highly stressed components. At cryogenic temperatures, the titanium alloys exhibited higher notch sensitivity than alloys now normally employed for light weight cryogenic tankage. However, the -320 F and -423 F yield strength to density ratios of the commonly used materials are from 40 to 50 per cent lower than obtainable from titanium alloys. The elongation for several of the investigated titanium alloys exhibited a sharp drop between -320 F and -423 F. However, an equally sharp transition in the notch properties did not occur in this temperature range.
Author:
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Category : Nuclear energy
Languages : en
Pages : 946
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Author: Robert M. Baucom
Publisher:
ISBN:
Category : Titanium alloys
Languages : en
Pages : 42
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 184
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Author: Don Owens
Publisher:
ISBN:
Category : Fracture mechanics
Languages : en
Pages : 68
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Author:
Publisher: ASTM International
ISBN:
Category :
Languages : en
Pages : 199
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Author: TL. Sullivan
Publisher:
ISBN:
Category : Biaxial stress
Languages : en
Pages : 12
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Book Description
Biaxial yield strengths as high as 1.53 times uniaxial yield strength were obtained from burst tests of 6-in.-diameter cylindrical pressure vessels (1 to 2 stress field) fabricated from two textured titanium alloys, Ti-4Al-0.2O and Ti-5Al-2.5Sn ELI. Material nominally 0.020 in. thick was tested at 70, -320, and -423 F. While the Ti-4Al-0.2O alloy generally had superior biaxial smooth properties at the three test temperatures, the Ti-5Al-2.5Sn ELI alloy exhibited less notch sensitivity at-320 and -423 F. It is demonstrated that plastic Poisson's ratio obtained from a uniaxial test could be used to characterize the degree of texture in the two alloys and provide a means for predicting biaxial strengthening.
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Category : Aeronautics
Languages : en
Pages : 1126
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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
