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HIGH CYCLE FATIGUE PROPERTIES OF CRYOGENIC STRUCTURAL ALLOYS.

[In Japanese. / En japonais.]

Author(s) : NAGAI K.

Type of article: Article

Summary

HIGH CYCLE FATIGUE TESTS AT CRYOGENIC TEMPERATURES WERE PERFORMED FOR TITANIUM ALLOYS AND AUSTENITIC STEELS. THE S-N CURVES (WITH SOME EXCEPTIONS) SHIFTED TO HIGHER STRESS OR LONGER LIFE SIDE WITH A DECREASE IN TEST TEMPERATURE IN FORGED TITANIUM-6 ALUMINIUM-4 VANADIUM ALLOYS. THEREWAS LITTLE CHANGE IN FATIGUE STRENGTH BETWEEN 77 AND 4 K FORTEDLY FATIGUE STRENGTH AT 1 MILLION CYCLES INCREASED IN PROPORTION TO A GAIN IN STRENGTH BY TEMPERATURE DECREASE. HOWEVER, A RATIO OF THE FATIGUE STRENGTH TO TENSILE OR YIELD STRENGTH DEPENDED ON MATERIAL AND ITS PROCESSING. FROM THE VIEWPOINT OF COMBINATION OF YIELD STRENGTH AND FATIGUE STRENGTH, AUSTENITIC STEELS HAD A HIGHER FATIGUE STENGTH THAN TITANIUM ALLOYS AT A GIVEN YIELD STRENGTH. AMONG THE TITANIUM ALLOYS, THE ROLLED ONES EXCEEDED THE FORGED ONES.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 1992-0938
  • Languages: Japanese
  • Source: Cryogenics/ Cryog. Eng. - vol. 26 - n. 4
  • Publication date: 1991
  • Document available for consultation in the library of the IIR headquarters only.

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