Fatigue crack initiation and propagation of a TiNi shape memory alloy

被引：15

作者：

Gloanec, A. -L. ^{[1
]}

Cerracchio, P. ^{[1
]}

Reynier, B. ^{[1
]}

Van Herpen, A. ^{[1
]}

Riberty, P. ^{[1
]}

机构：

[1] UMEIMS ENSTA Paristech, F-75732 Paris 15, France

来源：

SCRIPTA MATERIALIA | 2010年 / 62卷 / 10期

关键词：

Low cycle fatigue; Pseudoelastic behavior; Fatigue crack initiation; Fatigue crack propagation; Dissipated energy; PSEUDOELASTICITY; DEFORMATION; BEHAVIOR;

D O I：

10.1016/j.scriptamat.2010.02.001

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this paper, fatigue crack initiation and the propagation stages of a TiNi shape memory alloy are examined using a low cycle fatigue interrupted test. Submitted to fatigue cyclic loading, the response of the alloy presents a classical pseudoelastic response. Two potential initiation crack areas are highlighted: at the phase interfaces and at the grain boundaries. Propagation results from the coalescence of many microscopic cracks. These two stages are detectable in the last 20% of the total fatigue life. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：786 / 789

页数：4

共 17 条

[1]

[Anonymous], 1982, J PHYS S12

[2] DIFFUSION IN TITANIUM-NICKEL SYSTEM .1. OCCURRENCE AND GROWTH OF VARIOUS INTERMETALLIC COMPOUNDS [J].