SA-07-1(050) Influence of Temperature on Crack Growth Behavior in a Titanium Alloy Under Multiaxial Fatigue(Flaw Assessment at Elevated Temperature 2)

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概要

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• This paper deals with the role of temperature in the behavior of fatigue cracks in a Titanium alloy (Ti6A14V). Push-Pull tests (R=-1) with an imposed level of steady torsion were carried out under different levels of temperature (-100℃ ; 20℃ ; 200℃ and 400℃) in ambient air. At each temperature the role of steady torsion on the shape of the da/dN-Kmax curve was assessed. The crack propagation rate, roughness influence on crack closure and the fatigue threshold, K_<th>, were studied in relation to the mechanism of propagation of cracks. The effect of temperature in the referred subjects was discussed. A 'fatigue ductile-fragile transition temperature' was detected. Tests were done with round specimens with a pre-crack, and a DCPD controlling system was used to measure the crack growth.

• 一般社団法人日本機械学会の論文
• 2001-06-03

著者

• Silva Filipe

  Mechanical Eng. Dep. Minho University

• Pinho Antonio

  Mechanical Eng. Dep. Minho University

関連論文

• SA-07-1(050) Influence of Temperature on Crack Growth Behavior in a Titanium Alloy Under Multiaxial Fatigue(Flaw Assessment at Elevated Temperature 2)

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