The stacking-fault energies of Fe-based shape-memory alloys were calculated by using the extended dislocation node method. The results showed that Ni and Mn increased the stacking-fault energy, while Cr and Si decreased the energy. An expression was found which related the nature of the alloying element to the stacking-fault energy of the Fe-based shape-memory alloy. The effective ratios of the effects of alloying elements upon the stacking-fault energy of Fe-based alloys were: -1.1% for Cr, 1.64% for Ni, 0.21% for Mn and -4.45% for Si.

Stacking Fault Energy of Iron-Base Shape Memory Alloys. J.C.Li, W.Zheng, Q.Jiang: Materials Letters, 1999, 38[4], 275-7