Author: G. B. Espey
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 34
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.
Sharp-Edge-Notch Tensile Characteristics of Several High-Strength Titanium Sheet Alloys at Room and Cryogenic Temperatures
Author: G. B. Espey
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 34
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.
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 34
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.
Smooth and Sharp-notch Tensile Properties of Cold-reduced AISI 301 and 304L Stainless-steel Sheet at 75 Degrees, -320 Degrees and -423 Degrees F
Author: Morgan P. Hanson
Publisher:
ISBN:
Category : Austenitic stainless steel sheets
Languages : en
Pages : 36
Book Description
Publisher:
ISBN:
Category : Austenitic stainless steel sheets
Languages : en
Pages : 36
Book Description
Smooth and Sharpe-notch Property Variations for Several Heats of Ti-6A1-4V Sheet at Room and Cryogenic Temperatures
Author: Morgan P. Hanson
Publisher:
ISBN:
Category : Statistical matching
Languages : en
Pages : 22
Book Description
Publisher:
ISBN:
Category : Statistical matching
Languages : en
Pages : 22
Book Description
Cryogenic Materials Data Handbook
Author: United States. National Bureau of Standards. Cryogenic Engineering Laboratory. Boulder, Colo
Publisher:
ISBN:
Category : Low temperature research
Languages : en
Pages : 344
Book Description
Publisher:
ISBN:
Category : Low temperature research
Languages : en
Pages : 344
Book Description
NASA Technical Note
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 344
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 344
Book Description
Applications Related Phenomena in Titanium Alloys
Author: Conrad H.
Publisher: ASTM International
ISBN:
Category :
Languages : en
Pages : 300
Book Description
Publisher: ASTM International
ISBN:
Category :
Languages : en
Pages : 300
Book Description
Cryogenic Materials Data Handbook. Supplement
Author: United States. National Bureau of Standards. Cryogenic Engineering Laboratory, Boulder, Colo
Publisher:
ISBN:
Category : Low temperature engineering
Languages : en
Pages : 732
Book Description
Publisher:
ISBN:
Category : Low temperature engineering
Languages : en
Pages : 732
Book Description
Low Temperature Properties of Selected Materials
Author: Dorothea M. Johnson
Publisher:
ISBN:
Category : Low temperatures
Languages : en
Pages : 182
Book Description
This report is a bibliography of the work reported in the literature on the effects of low temperature on the properties of structural materials. Some of the newer areas of cryogenic technology such as superconducting machinery involve environments which may subject the components to temperature as low as 4 K. Exposure of structural materials to such low temperatures affects their properties. This bibliography contains 963 references published between 1950-1976, arranged in chronological/alphabetical order. Combined material/property indexes are provided. (Author).
Publisher:
ISBN:
Category : Low temperatures
Languages : en
Pages : 182
Book Description
This report is a bibliography of the work reported in the literature on the effects of low temperature on the properties of structural materials. Some of the newer areas of cryogenic technology such as superconducting machinery involve environments which may subject the components to temperature as low as 4 K. Exposure of structural materials to such low temperatures affects their properties. This bibliography contains 963 references published between 1950-1976, arranged in chronological/alphabetical order. Combined material/property indexes are provided. (Author).
Brookhaven National Laboratory Selected Cryogenic Data Notebook: Sections X-XVIII
Author:
Publisher:
ISBN:
Category : Low temperature engineering
Languages : en
Pages : 402
Book Description
Publisher:
ISBN:
Category : Low temperature engineering
Languages : en
Pages : 402
Book Description
Review of Current Data on the Tensile Properties of Metals at Very Low Temperatures
Author: James Edward Campbell
Publisher:
ISBN:
Category : Liquid hydrogen
Languages : en
Pages : 90
Book Description
Publisher:
ISBN:
Category : Liquid hydrogen
Languages : en
Pages : 90
Book Description