采用X射线衍射、透射电镜以及恢复力测量,研究了Fe-17Mn-5Si-10Cr-5Ni合金的低温松弛性能.结果表明,实验合金的低温松弛十分严重,恢复力在-60℃时较室温下松弛了57.17％.低温松弛后实验合金组织中存在较多的ε和α＇马氏体,这些ε和α＇马氏体主要是由应力诱发产生的.温度降低相变驱动力增大,在恢复力的作用下发生应力诱发ε和α＇马氏体相变是导致Fe-Mn-Si合金低温松弛的根本原因,诱发的ε和α＇马氏体量越多,松弛程度就越高. The low-temperature relaxation properties of Fe-17Mn-5Si-10Cr-5Ni alloy were investigated by X-ray diffraction, transmission electron microscopy and measurement of restoring force.The results show that the low temperature relaxation of the alloy is very serious, the recovery force at -60 ℃ than at room temperature And the relaxation rate was 57.17% .At the same time, there were more ε and α ’martensite in the microstructure after low temperature relaxation, these ε and α’ martensite were mainly induced by stress, The stress-induced ε and α ’martensitic transformation under the action of restoring force is the fundamental reason for the low temperature relaxation of Fe-Mn-Si alloy. The more ε and α’ martensite induced, the higher the relaxation.