Effect of training on the temperature memory effect in Ti49.5Ni34.5Cu11.5Pd4.5 shape memory alloy with narrow hysteresis
Effect of training on the temperature memory effect in Ti49.5Ni34.5Cu11.5Pd4.5 shape memory alloy with narrow hysteresis
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DOI：
10.1016/j.scriptamat.2016.03.003
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发表时间：
2016-06
影响因子：
6
通讯作者：
X. Meng;Hang Li;W. Cai
中科院分区：
文献类型：
--
作者：
X. Meng;Hang Li;W. Cai
研究了具有窄滞后的Ti49.5Ni34.5Cu11.5Pd4.5合金的温度记忆效应。可以通过多次部分热循环（TME训练）来增强TME。通过训练获得的TME是可重复的，并且难以消除，即使在1000次完整的热循环之后也可以检测到。在训练期间，不同马氏体区域之间的位错密度的差异被引入，这导致TME。它随着训练周期的增加而增加，并且由于在随后的完整热循环期间引入的罕见位错而缓慢地毕业，从而导致可重复的TME。
The temperature memory effect (TME) has been investigated in Ti49.5Ni34.5Cu11.5Pd4.5alloy with a narrow hysteresis. The TME can be enhanced through multiple partial thermal cycling (TME training). The TME obtained by training is repeatable and hard to wipe out, which can be detected even after 1000 following complete thermal cycles. A difference in the dislocation density between different martensite regions is introduced during training, which results in the TME. It increases with increasing training cycles, and graduates away slowly because of the rare introduced dislocations during the following complete thermal cycles, leading to the repeatable TME.