TiNi形状記憶合金の回復応力 : 第2報,最大ひずみ一定下での特性

概要

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The recovery stress associated with the martensitic transformation (MT) and the rhombohedral phase transformation (RPT) in TiNi shape memory alloy was invstigated experimentally with respect to cyclic heating and cooling under constant maximum strain. The results are summarized as follows. ( 1 )The recovery stress in the heating or cooling process increases or decreases, respectively, along the reverse transformation line of RPT. ( 2 ) The stress at high temperature takes a maximum value for the maximum strain in the completion region of RPT and just after the starting point of MT. ( 3 )The recovery stress induced by heating and cooling takes a maximum value for the maximum strain in the completion region of RPT. The recovery stress under constant maximum strain almost coincides with that under constant residual strain. ( 4 )The recovery stress varies slightly with cycling.
社団法人日本機械学会の論文
1994-01-25