Effect of precipitation on two-way shape memory effect of melt-spun Ti50Ni25Cu25 ribbon
Effect of precipitation on two-way shape memory effect of melt-spun Ti50Ni25Cu25 ribbon
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DOI：
10.1016/j.matchemphys.2009.10.051
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发表时间：
2010-03
影响因子：
4.6
通讯作者：
Y. Tong;Y. Liu
中科院分区：
文献类型：
--
作者：
Y. Tong;Y. Liu
研究了析出相对Ti50Ni25Cu25薄带双向形状记忆效应和形变诱发马氏体稳定化的影响。由于马氏体变形而产生的双向形状记忆效应受析出物形成的影响。在应变马氏体至5.5%之后，在800°C下退火300 s的样品中获得1.25%的双向形状记忆应变，其不引入B11沉淀物。含析出相的变形Ti 50 Ni 25 Cu 25薄带在第一次加热时具有多阶段相变特征。
In the present work, effect of precipitation on two-way shape memory effect and deformation induced martensite stabilization of Ti50Ni25Cu25ribbon was investigated. The two-way shape memory effect developed as a result of martensite deformation is affected by formation of precipitates. After straining martensite to 5.5%, a two-way shape memory strain of 1.25% was obtained in a sample annealed at 800°C for 300s that does not introduce B11 precipitates. Results also show that the deformed Ti50Ni25Cu25ribbon containing precipitates has multiple-stage transformation characteristics during the first heating.