ニッケル基単結晶合金CMSX-2の多軸クリープ異方性 : 第1報, 実験および活動すべり系の同定

概要

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Combined tension-torsion creep tests of a nickel-base single crystal superalloy CMSX-2 are performed at 900°C under steady as well as nonsteady stress conditions using thin-walled tubular specimens with [001] oriented in the axial direction. Effects of anisotropy are observed conspicuously both on the magnitude of creep rate and the noncoaxiality between creep rate and stress. To identify operative slip systems in the present creep tests, the experimental data of steady-state creep are analyzed on the basis of a crystal creep theory of the power-law type. It is shown that the experiments are simulated well if we assume simultaneous operation of the {111}<112> octahedral and {100}<110> cubic slip systems.
一般社団法人日本機械学会の論文
1992-10-25