LIN Guangming CHENXingyuan ZHANG Jinxiu Material Science Research Institute
,
Zhongshan University
,
Guangzhou
,
China WANG Yurui Metallurgy Research Institute of Beijing Iron and Steel Company
,
Beijing
,
China LIN Guangming Associate Professor
,
Department of Physics
,
Zhongshan University
,
Guangzhou 510275
,
China
金属学报(英文版)
Snap-acting two way shape memory device can be obtained by using the design proposed by authors.Some essential parameters which characterize the properties of device have been pro- posed also in this paper.And the principle and method according to which a practical snap-acting device can be designed have been described.
关键词:
shape memory alloy
,
null
,
null
LIN Guangming HUANG Yuanshi ZHANG Jinxiu Zhongshan University
,
Guangzhou
,
China LIN Guangming
,
Associate Professor
,
Dept.of Physics
,
Zhongshan University
,
Guangzhou 510275
,
China
金属学报(英文版)
The snap-acting transition and two way shape memory (TWSM) effect have been obtained in a TWSM spring made of Ni51Ti49 alloy using the constrained effect of stress on driving force of TWSM material.When the snap-acting transition has been realized:M_s= M_f and A_s=A_f;hysteresis is rectangular,the height (TWSM effect) and width (hysteresis) of the rectangle can be readjusted by means of constrained stress.The results of resistance measurments show that,the snap-acting TWSM effect mentioned above was supplied mainly from the transformation of P←→R.The thermodynamic model has also been proposed to ac- count for the snap-acting transformation.
关键词:
transformation thermodynamics
,
null
,
null
,
null
