Transformation Temperature and Enthalpy of Remelting NiTi Shape Memory Alloy

被引：0

作者：

Yin Yan ^{[1
]}

Xu Yangtao ^{[1
]}

Xia Tiandong ^{[1
]}

Luo Zhiqiang ^{[1
]}

Da Guozu ^{[2
]}

机构：

[1] Lanzhou Univ Technol, State Key Lab Gansu Adv Nonferrous Met Mat, Lanzhou 730050, Peoples R China

[2] Lanzhou Seemine Shape Memory Alloy Co Ltd, Lanzhou 730000, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2013年 / 42卷

关键词：

NiTi shape memory alloy; leftover materials; remelting; transformation temperature; enthalpy;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The high cost of NiTi shape memory restrict its further development and extensive application. At the same time, a mass of leftover material will be produced during the machining for NiTi shape memory alloys appliance. Therefore it is very important to utilize the leftover material of NiTi shape memory alloys and recycle. In present study, the leftover materials of NiTi shape memory alloy was melt via vacuum induction melting in a graphite crucible. After rolling, the alloy plates were aged at different temperatures. The martensitic transformation temperature and enthalpy was tested by DCS. The result shows that the martensitic transformation temperature of the NiTi shape memory alloys decreases after remelting. However the temperature intervals of B19' martensitic transformation increase. At the same time, the enthalpy for the martensitic transformation decreases. This shows that under the same conditions the crystal structure conversion in remelting alloys is less sufficient than that in the first melt alloys during the martensitic transformation.

引用

页码：309 / 312

页数：4

共 10 条

[1] Applications of shape memory alloys in Japan
Asai, M
Suzuki, Y
[J]. SHAPE MEMORY MATERIALS, 2000, 327-3 : 17 - 22
[2] SMA - Present state and perspective for new applications
Bundara, B
Tokuda, M
Ye, M
[J]. SHAPE MEMORY MATERIALS, 2000, 327-3 : 43 - 46
[3] THE R-PHASE TRANSITION AND ASSOCIATED SHAPE MEMORY MECHANISM IN TI-NI SINGLE-CRYSTALS
MIYAZAKI, S
WAYMAN, CM
[J]. ACTA METALLURGICA, 1988, 36 (01): : 181 - 192
[4] Qin GH., 2004, HEAT TREATMENT, V19, P12
[5] Saburi T, 1998, SHAPE MEMORY MAT, P135
[6] Xu Zuyao, 2000, SHAPE MEMORY ALLOYS, P6
[7] Yang Dazhi, 2000, INTELLIGENT MAT INTE, P106
[8] Yang Jie, 1993, SHAPE MEMORY ALLOYS, P174
[9] Yin Yan, 2008, THESIS LANZHOU U TEC, P102
[10] Zhao Liancheng, 2002, SHAPE MEMORY EFFECT, P20

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