Stress-strain behavior of porous Ni-Ti shape memory intermetallics synthesized from powder sintering

被引：66

作者：

Li, BY ^{[1
]}

Rong, LJ ^{[1
]}

Li, YY ^{[1
]}

机构：

[1] Acad Sinica, Inst Met Res, Shenyang 110015, Peoples R China

来源：

INTERMETALLICS | 2000年 / 8卷 / 5-6期

关键词：

shape-memory effects; sintering; microstructure;

D O I：

10.1016/S0966-9795(99)00140-5

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：

The microstructure and stress-strain behavior of porous Ni-Ti intermetallics fabricated by powder sintering of Ni, Ti and/or TiH2 are investigated. The pores are small and well distributed in the present porous Ni-Ti alloys and the phase constituent and stress-strain behavior of porous Ni-Ti alloys are significantly influenced by the sintering conditions (sintering temperature and sintering time) and TiH2 additions. With increasing sintering temperature, the pseudoelasticity (PE) increases while the hysteretic width decreases. A second compression also leads to an increase of PE, elastic modulus and related deformation resistance. Further, the stress-strain behavior of porous Ni-Ti alloys is different in some way from that of bulk Ni-Ti alloys and other porous materials. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：643 / 646

页数：4

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