首页|Two-way shape memory effect in a Ti-Zr-Nb-Ta high-temperature shape memory alloy

Two-way shape memory effect in a Ti-Zr-Nb-Ta high-temperature shape memory alloy

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The two-way shape memory effect in a Ti-18.5Zr-10Nb-3.5Ta high-temperature shape memory alloy was investigated.X-ray diffraction measurement shows that the alloy is composed of orthorhombic α"-martensite.ω phase is not found in Ti-18.5Zr-10Nb-3.5Ta alloy due to the suppressing effect of Ta element.The α"-martensite laths are found in the transmission electron microscope observation;after the bending deformation,there appear a lot of dislocations.The alloy exhibits a shape memory strain of 3.8％and a high reverse martensite transformation start temperature of 464 K.The maximum two-way shape memory strain of 1.2％is obtained in the alloy with the pre-bending training strain of 10％.The mechanism can be ascribed to the effect of internal stress field caused by dislocations.

Ti-ZrShape memory alloysTwo-way shape memory effect

Cheng-Yang Xiong、Tuo Li、Jun Wang、Yan Li

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School of Materials Science and Engineering,Beihang University,Beijing 100191,China

National Natural Science Foundation of ChinaFundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities

51371016YWF-16-BJ-J-49YWF-17-BJ-J-23

2024

10.1007/s12598-018-1102-2

稀有金属(英文版)
中国有色金属学会

稀有金属(英文版)

CSTPCDEI
影响因子：0.801
ISSN：1001-0521
年,卷(期)：2024.43(3)
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