Martensitic transformation behaviors and mechanical properties of (Ti36Ni49Hf15)100-xYx high temperature shape memory alloys
Martensitic transformation behaviors and mechanical properties of (Ti36Ni49Hf15)100-xYx high temperature shape memory alloys
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DOI：
10.1016/j.jallcom.2017.02.137
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发表时间：
2017-05
影响因子：
6.2
通讯作者：
Xiaoyang Yi;W. Gao;Xianglong Meng;Zhiyong Gao;W. Cai;Liancheng Zhao
中科院分区：
文献类型：
--
作者：
Xiaoyang Yi;W. Gao;Xianglong Meng;Zhiyong Gao;W. Cai;Liancheng Zhao
Martensitic transformation and shape memory effect (SME) of the (Ti36Ni49Hf15)100-xYxalloys are investigated. It is found that all the samples undergo martensitic transformation from cubic parent phase (B2) to monoclinic martensite (B19′). The Y addition slightly decreases the phase transformation temperatures mainly due to the low solid solubility limit of Y in Ti-Ni-Hf alloys. The micro-hardness and compressive strength are enhanced as a result of the Y addition. The SME increases firstly with increasing Y content up to 2.0 at.% and then decreases with the further increased Y content. The obtained maximum completely recoverable strain is 4% obtained for Y content higher than 1 at.%.
