POSITRON ANNIHILATION STUDY OF THERMOELASTIC MARTENSITE STABILIZATION IN A THERMALLY CYCLED CuZnAl ALLOY--A DISCUSSION OF ORIGIN OF THERMOELASTIC MARTENSITE STABILIZATION
Wang Jing-cheng (王景成)a, You Fu-qiang (尤富强)a, Shao Zi-chang (邵自昌)a, Qi Jin-lin (祁金林)b, Tang Xue-feng (汤学峰)b
a Research Center, Shanghai Iron & Steel Research Institute, Shanghai 200940, China; b Department of Physics, Tongji University, Shanghai 200092, China
Abstract The thermally cycled samples of Cu-23at%Zn-10at%Al have been studied by means of positron annihilation. It is shown that vacancies and their movement seem to be the leading factors resulting in thermoelastic martensite stabilization based on the fact that stabilization was no longer present and the great decrease of positron parameters after the samples in martensite were thermally cycled.
Received: 24 November 1997
Revised: 13 April 1998
Accepted manuscript online:
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