中间退火温度对Fe-Mn-Si-Cr-Ni-C系合金记忆效应的影响

Effect of Intermediate Annealing Temperature on the Shape Memory Effect of Fe Mn Si Cr Ni C Alloys

研究了热机械循环训练的中间退火温度对Ｆｅ－Ｍｎ－Ｓｉ－Ｃｒ－Ｎｉ－Ｃ系合金形状记忆效应（ＳＭＥ）的影响，结果表明：当碳含量小于０．１２％时，合金的最佳中间退火温度随碳含量的增加而略有提高；但当碳含量大于０．１２％后，碳含量的增加显著提高合金的最佳中间退火温度。只要中间退火温度适当，热机械循环训练能显著提高合金的ＳＭＥ；训练２～３次，合金的ＳＭＥ有大幅度提高；但继续训练，提高不大。

The effect of intermediate annealing temperature in the thermal mechanical cycle on the shape memory effect (SME)of Fe Mn Si Cr Ni C alloys has been studied in this paper.The results show that the optimal intermediate annealing temperature increases slightly with increasement of carbon content,when carbon content is less than 0.12%;but when bigger than 0.12%,it increases remarkably with increasement of carbon content.The SME of the alloys can be improved by the 2～3 cycles provided that the intermediate annealing temperature is suitable;but the SME can not be improved further by the increasement of cycles.