TiNi形状記憶合金の変態擬弾性挙動に対するひずみ速度の影響(<小特集>:非弾性挙動の力学)

概要

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The influence of strain rate on the pseudoelastic behavior associated with the martensitic transformation was investigated by tensile tests for TiNi shape memory alloy. The results were summarized as follows. The temperature rise due to the stress-induced martensitic transformation measured by a non-contact method is an order of magnitude larger than that measured through a thermocouple. The increase in the transformation stress with an increase in strain rete appears due to the temperature rise. The pseudoelastic behavior depending on strain rate is well expressed by the proposed constitutive equation considering the temperature variation. The proposed equation is useful for evaluation of pseudoelastic properties.
社団法人日本機械学会の論文
2000-03-25