Effect of chemical component on shape memory effect of Fe-Mn-Si-Ni-C-RE shape memory alloy

Naichao Si, Zhihong Jia, and Longbiao QiSchool of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, China

摘 要：<正> Effect of chemical component on shape memory effect （SME） of Fe-Mn-Si-Ni-C-RE shape memory alloys was studied by bent measurement, thermal cycle training, SEM etc. Results of study indicate that the alloys with high Mn content （25%） appeare better SME, especially in lower strain. SME improves evidently when Si is higher content, especially it’s range from 3% up to 4%. But brittleness of Fe-Mn-Si-Ni-C-RE alloy increases by increasing the Si content. SME of the alloy is weakening gradually as carbon content increases under small strain （3%）. But in the condition of large strain （above 6%）, SME of the alloy whose carbon content ranges from 0.1% to 0.12% shows small decreasing range, especially of alloy with the addition of compound RE.

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