Mechanical properties of high purity single crystal NiAl

被引：38

作者：

Darolia, R

Walston, WS

Noebe, R

Garg, A

Oliver, BF

机构：

[1] GE Aircraft Engines, Cincinnati, OH 45215 USA

[2] NASA, Lewis Res Ctr, Cleveland, OH 44135 USA

[3] Univ Tennessee, Knoxville, TN 37996 USA

来源：

INTERMETALLICS | 1999年 / 7卷 / 10期

关键词：

fracture toughness;

D O I：

10.1016/S0966-9795(99)00043-6

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This paper describes the results of a study carried out to determine the role of impurities on the mechanical behavior of NiAl. Tensile, compression and toughness tests were carried out on high purity single crystal NiAl of the stoichiometric composition. The test results were compared with the results obtained with the conventional purity NiAl. The high purity NiAl specimens did not exhibit any improvement in room temperature ductility and toughness. The deformation behavior at room temperature of the high purity single crystals was found to be similar to that of the conventional purity NiAl single crystals. However, the high purity NiAl single crystals showed an absence of strain aging and much lower yield strength compared to the conventional purity NiAl. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：1195 / 1202

页数：8

共 24 条

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