Temperature Dependence of High-Temperature Vacuum Tensile-Fatigue Life and Deformation in Cu-Al Alloy with 9%Al

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概要

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• Tensile fatigue test of Cu-Al alloy (with 9% Al) in vacuum at high temperature was performed by the high-temperature vacuum tensile-fatigue tester made to work at pressure 10^<-5>mmHg, up to 700℃, under load of maximum 50kg and with load frequency 1〜10 sec^<-1>. And slip lines and fractured faces in fractured specimens were observed by optical microscope. The relationship between the present results and the results of tests on fatigue strength and high-temperature vacuum tensile-strength^<(8)> was discussed. The empirical formula for the relationship among the cyclic load ω, the number N^^- of load cycles to cause the fracture and testing temperature T (°K) can be given by N^^-=N^^-_0 (ω/W_0)^<-B^^-> exp [-A' (T-T_0)^2], where A'=0.88×10^<-5>°K^<-2>, B^^-=8,N^^-_0=4×10^2,T^^-_0=360°K and W_0=46.5kg.

• 一般社団法人日本機械学会の論文

著者

• Matsushima Shigeo

  Department Of Mechanical Engineering The Defense Academy

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• Temperature Dependence of High-Temperature Vacuum Tensile-Fatigue Life and Deformation in Cu-Al Alloy with 9%Al

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