MODELING THERMAL MISFIT STRESSES IN NICKEL-BASE SUPERALLOYS CONTAINING HIGH-VOLUME FRACTION OF GAMMA'-PHASE

被引：153
|
作者：
MULLER, L
GLATZEL, U
FELLERKNIEPMEIER, M
机构：
[1] Institut für Metallforschung, Sekr. BH 18 Technische Universität Berlin, 1000 Berlin 12
来源：
ACTA METALLURGICA ET MATERIALIA | 1992年 / 40卷 / 06期
关键词：
D O I：
10.1016/0956-7151(92)90433-F
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Finite element calculations were made in order to simulate coherency stresses in the commercial superalloy SRR 99 containing 70 vol.% of gamma' phase. Stress and strain energy properties are calculated for the relevant morphologies observed in SRR 99. The influence of 2D/3D and isotropic/anisotropic modelling on the results is discussed in detail. Our results are applied to better understand the high temperature evolution of the microstructure. The sphere to cube transition with increasing precipitate size and the appearance of butterfly distorted cubes during cooling will be discussed.
引用
收藏
页码：1321 / 1327
页数：7
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