【作者】 王河廷； 沈以赴； 王再友；

【Author】 WANG He-ting~1 SI-IEN Yi-fu~1 WANG Zai-you~2 (1.School of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China; 2.School of Materials Engineering,Nanjing Institute of Technology,Nanjing 211167,China)

【机构】 南京航空航天大学材料科学与技术学院； 南京工程学院材料工程学院；

【摘要】 研究了预变形量和时效温度对 Fe-28Mn-5．7Si- 5Cr-0．82Ni-0．045Nb 合金形状记忆效应的影响。结果表明,合金形状回复率随预变量的增大而减小,在2%左右合金回复率可以达到80%。合金经1023K 时效处理时形状记忆效应最好,比固溶态提高了90%,这主要是时效处理有效提高了奥氏体基体的强度,而奥氏体基体的强度的提高可以抑制塑性变形的产生。更多还原

【Abstract】 This paper discussed the effect of pre-deformation and aging temperature on the recovery ratio of Fe-28Mn-5.7Si-5Cr-0.82Nb-0.045Ce shape memory alloy(SMA).The results indicate that the recovery ratio of Fe-28Mn-5.7Si-5Cr-0.82Ni-0.045Nb SMA decreases with the increasing of pre-deformation,and the recovery ratio can reach 80% when the pre-deformation is 2%.In addition,the recovery ratio of the alloy increase with the aging temperature increase,and the recovery ratio reach the maximum at 1023K,raised 90% than the solution state,the reason for which is the strength of the matrix alloy is raised by the aging treatment.更多还原