3D-FEM calculations of rafting in Ni-base superalloys based on high temperature elastic and lattice parameters

被引：0

作者：

Osawa, M ^{[1
]}

Shiraishi, H ^{[1
]}

Yokokawa, T ^{[1
]}

Harada, H ^{[1
]}

Kobayashi, T ^{[1
]}

机构：

[1] Natl Inst Mat Sci, High Temp Mat Project 21, Tsukuba, Ibaraki 305, Japan

来源：

Superalloys 2004 | 2004年

关键词：

Ni-base superalloy; single-crystal; elastic constant; lattice misfit; FEM;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The elastic constants of gamma and gamma' phases, the component phases of Ni-base superalloys, these belong to 1(st), 2(nd), and 3(rd) generation, have been measured at 900 degrees C. Three dimensional FEM calculations have been conducted based on these measured elastic constants and lattice misfit. The elastic constants have been different between generations of superalloys, depending mainly on the amount of Re. The predicted raft structure have been different among the alloys, and it also depends on the introduction of interfacial dislocations.

引用

页码：977 / 985

页数：9

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