Recovery Stress and Recovery Strain of TiNi Shape Memory Alloy : Cyclic Properties under Constant Residual Strain and Constant Maximum Stress

概要

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The cyclic behavior of recovery stress under constant residual strain and recovery strain under constant maximum stress in TiNi shape memory alloy was investigated experimentally. The influence of residual strain, maximum stress and the heating temperature on cyclic characteristics of recovery stress and recovery strain was discussed. The main results are summarized as follows. (1) The stress at high temperature, the stress at low temperature and the recovery stress decrease in the early cycles, but become almost constant after these cycles. (2) The recovery stress under thermal cycling decreases with residual strain. (3) Both the recovery stress and the stress at high temperature increase with the heating temperature, but the stresses' rates of increase decrease. (4) The transformation temperature under constant stress rises with the number of thermal cycles.
一般社団法人日本機械学会の論文
1992-01-15