RELATION BETWEEN STRUCTURAL-PROPERTIES AND MORPHOLOGY OF GAMMA' PRECIPITATES OF AN AM1 NICKEL SINGLE-CRYSTAL SUPERALLOY

被引：0

作者：

ROYER, A ^{[1
]}

BASTIE, P ^{[1
]}

BELLET, D ^{[1
]}

ZEYEN, CME ^{[1
]}

机构：

[1] INST LAUE LANGEVIN,F-38042 GRENOBLE 9,FRANCE

来源：

JOURNAL DE PHYSIQUE IV | 1994年 / 4卷 / C3期

关键词：

D O I：

10.1051/jp4:1994314

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Measurements of the distortion of the lattice cells and of the lattice parameter mismatch between the gamma and gamma' phases of two AMI single crystal superalloy samples with different morphology of the precipitates are reported as a function of temperature. They show that these quantities are strongly influenced by the shape and the size of the precipitates and are not intrinsic properties of the alloy. The dilatation of each phase is deduced from the study of the crept sample and allows to propose a scheme for the evolution of the lattice parameter of the heat-treated sample. In particular a cross over from an elastic accommodation to a plastic relaxation is evidenced.

引用

页码：105 / 110

页数：6

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