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Acta Metall Sin  1989, Vol. 25 Issue (2): 77-78    DOI:
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SNAP-ACTION PHASE TRANSFORMATION IN TWO-WAY SHAPE MEMORY Ni-Ti ALLOY
LUO Laizhong;ZHANG Jinxiu;LIN Guangming Zhongshan University; Guangzhou
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LUO Laizhong;ZHANG Jinxiu;LIN Guangming Zhongshan University; Guangzhou. SNAP-ACTION PHASE TRANSFORMATION IN TWO-WAY SHAPE MEMORY Ni-Ti ALLOY. Acta Metall Sin, 1989, 25(2): 77-78.

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Abstract  The snap-action behavior of a NiTi alloy disk which is controlled by combinationof a nonlinear stress field and temperature has been studied. After treatment for two-way shapememory, all shape memory strain of snap-action finishes abruptlyat certain temperature within aintertal of less than 1ms. The results of resistance measurement and in-situ X-ray diffractionindicate that, snap-action strain is mainly resulted from snap-action β→?R transformation.
Key words:  shape memory alloy      NiTi alloy      snap-action phase transformation     
Received:  18 February 1989     
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1 Otsuka K, Shimizu K. Int Metall Rev, 1986; 31: 93
2 徐祖耀.马氏体相变与马氏体,北京:科学出版社,1980,Ch.5:32
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