Ni基一方向凝固合金の多軸クリープ : 第2報,結晶格子回転の影響

概要

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This paper deals with the effects of crystalline lattice rotation on multiaxial creep of a nickelbase directionally solidified alloy. Combined tension-torsion creep tests of directionally solidified IN738LC at 850℃ are first discussed to find features which become noticeable with the advance of creep deformation. The results of the tests are then analyzed on the basis of the crystallographic slip theory of finite deformation. We thus show that the crystalline lattice rotation explains the experimental features ; it is mostly responsible for the change of the non-coaxiality between creep rate and stress in combined tension-torsion creep, and partly for the earlier appearance of tertiary creep under combined tension-torsion than under pure tension or torsion.
一般社団法人日本機械学会の論文
1991-03-25