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EFFECT OF HEAT TREATMENT ON RECOVERY STRESS OF Fe 18Mn 5Si 8Cr 4Ni ALLOY

N. Li 1) , Y.H. Wen 1) , Y.G. Xu 1) , M.J. Tu 1) , P.Q. Li 2) , Y.L. Liu 2) and Y.L.Ma 2) 1) Department of Materials Shaping and Controlling Engineering , Sichuan University , Chengdu 610065 , China 2) Xi'an Petroleum Pipe Research Institute , Xi'an 710065 , China

金属学报(英文版)

The effect of quenching temperature on the recovery stress of Fe 18Mn 5Si 8Cr 4Ni shape memory alloy has been studied. The results show that both the maximum recovery stress σ h in heating and the recovery stress σ c at room temperature after heating increased as increasing quenching temperature increased, both σ h and σ c reached maximum at 650℃, and then decreased rapidly with the further increase in quenching temperature,but the descent degree of σ c was far bigger than that of σ h; When the quenching temperature is higher than 850℃, the further increase in quenching temperature had little effect on them; At random quenching temperature, σ c was far bigger than σ h.

关键词: shape memory alloy , null , null

STATISTICAL EVALUATION OF CRITICAL INCLUSION FACTOR FOR SECONDARY RECRYSTALLIZATON IN 3%Si STEEL Lecturer,Department of Materials Engineering,Southwestern Jiaotong University,Chengdu 610031,China

LI Shuchen Southwestern Jiaotong University , Chengdu , ChinaCHEN Mengzhe KE Jun University of Science and Technology Beijing , Beijing , China

金属学报(英文版)

On the basis of statistical data of MnS in the conventional 3% Si steel sheeets after various annealing processes,the critical inclusion factor has been evaluated to be 20 mm~(-1).The inhi- bition of MnS to grain growth has been exactly described.

关键词: 3%Si steel , null , null

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