Influence of irreversible plastic deformation on the martensitic transformation and shape memory effect in TiNi alloy

被引：14

作者：

Belyaev, S. P. ^{[1
]}

Resnina, N. N. ^{[1
]}

Volkov, A. E. ^{[1
]}

机构：

[1] St Petersburg State Univ, Res Inst Math & Mech, St Petersburg 198504, Russia

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2006年 / 438卷

基金：

俄罗斯基础研究基金会;

关键词：

martensitic transformation; shape memory; plastic deformation;

D O I：

10.1016/j.msea.2006.02.067

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The focus of this study is the influence of irreversible plastic deformation on the martensitic transformation and strain recovery after deformation of the specimen in the martensitic state. Both strain and electrical resistance in TiNi alloy have been measured simultaneously on heating and cooling of the sample which has been preliminarily deformed first in austenite (at 600 K) and then in martensite (at 290 K). A decrease of the alloy capacity for strain recovery and the change of the martensitic transformation sequence with an increase of the plastic strain have been found. Besides, the experimental data have shown that the electrical resistance varies with a hysteresis on heating and cooling of the sample deformed to 60%. This hysteresis is observed in a wide temperature interval and does not disappear with thermocycles. One can suppose that the internal oriented stresses may be the main cause of the observed phenomena. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：627 / 629

页数：3