The microstructure and martensitic transformation behaviors in Ti-Ni-Hf -X (Ag, Sn) high temperature shape memory alloys
The microstructure and martensitic transformation behaviors in Ti-Ni-Hf -X (Ag, Sn) high temperature shape memory alloys
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Ti-Ni-Hf-X(Ag,Sn)高温形状记忆合金的显微组织和马氏体相变行为
DOI：
10.1016/j.jallcom.2018.05.043
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发表时间：
2018-08
影响因子：
6.2
通讯作者：
Cai Wei
中科院分区：
文献类型：
--
作者：
Yi Xiaoyang;Pang Guobo;Sun Bin;Meng Xianglong;Cai Wei
The microstructures and martensitic transformation behaviors of the quaternary Ti-Ni-Hf-X (Ag, Sn) high temperature shape memory alloys were investigated systematically. The results showed that Ag and Sn were soluble in Ti–Ni-Hf matrices with a limited solubility of 0.28 at.% and 1.78 at.%, respectively. In addition to the martensite and (Ti,Hf)2Ni phase, the pure elemental Ag particle was also observed in the Ti-Ni-Hf-Ag alloys. However, the excessive Sn addition resulted in the formation of the intermetallics such as Ti3Sn type and TiNi2Sn type phase in the Ti-Ni-Hf-Sn alloys. Moreover, with the increasing of Sn content, the amounts of (Ti,Hf)2Ni phases decreased owing to the dissipation reaction of 12(Ti,Hf)2Ni +8Sn → 6TiNiHf + 5(Ti,Hf)3Sn + 3(Ti,Hf)Ni2Sn. Single martensitic transformation corresponding to B2⇋B19′ was observed in Ti-Ni-Hf-Ag alloys. While the Ti-Ni-Hf-Sn alloys with the higher Sn content (≥2 at.%) were characterized by two-steps martensitic transformation during the heating process. Both Sn and Ag addition reduced the martensitic transformation temperatures.
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DOI：
10.1002/jbm.b.30369
发表时间：
2006-02-01
影响因子：
3.4
作者：
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影响因子：
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