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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 11    No. 4    August 2001

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Stacking fault probability and
stacking fault energy in CoNi alloys
ZHOU Wei-min(周伟敏), JIANG Bo-hong(江伯鸿),
LIU Yan(刘 岩), QI Xuan(漆王睿)

Key Lab for High Temperature Materials Tests of Ministry of Education,
Shanghai Jiaotong University, Shanghai 200030, P.R.China

Abstract:The stacking fault probability of CoNi alloys with different contents of Ni was measured by X-ray diffraction methods. The results show that the stacking fault decreases with increasing Ni content and with increasing temperature. The thermodynamical calculation has found an equation that can express the stacking fault energy γof CoNi at temperature T . The phase equilibrium temperature depends on the composition of the certain alloy. The relationship between stacking fault energy γand stacking fault probability Psf  is determined.

 

Key words: stacking fault energy; stacking fault probability; martensitic transformation; CoNi alloy

ISSN 1672-7029
CN 43-1423/U

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