Title of article
Thermo-mechanical cyclic transformation behavior of Ti–Ni shape memory alloy wire
Author/Authors
Li، نويسنده , , Y.F. and Mi، نويسنده , , X.J. and Tan، نويسنده , , J. and Gao، نويسنده , , B.D.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2009
Pages
6
From page
8
To page
13
Abstract
The present paper deals with recovery strain and fatigue life of Ti49.8Ni50.2 shape memory alloy (SMA) wire on thermo-mechanical cycling (TMC). Recovery strain of SMA wire with several heat treatments shows different changes when being subjected to TMC at a series of constant loads. These changes are significant in the initial 200 cycles and recovery strain tends to reach a steady state in the further cycling. The effect of heat treatment on the fatigue life is analyzed, the SMA wire with shorter heat treatment exhibits lower fatigue life while higher recovery strain. Transformation temperatures of SMA wire on TMC is investigated by electrical resistance measurements. It was found that both annealing time and TMC has obvious influence on transformation behavior.
Keywords
Ti–Ni shape memory alloy , Thermo-mechanical cycling , Fatigue life , Transformation temperatures , Recovery strain
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Serial Year
2009
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Record number
2159552
Link To Document