The effect of high-energy milling on powders of Fe-Ni (50/50) alloy was evaluated by means of X-ray diffraction. The average micro-strain as a function of milling time (0.5, l or 8h) was deduced from X-ray diffraction data. The displacement and broadening of the peaks were used to estimate the stacking-fault energy, using the method of Reed and Schramm. It was estimated that the stacking-fault energy was 79mJ/m2.

Estimative of the Stacking Fault Energy for a FeNi(50/50) Alloy and a 316L Stainless Steel. M.F.De Campos, S.A.Loureiro, D.Rodrigues, M.C.A.Da Silva, M.B.De Lima: Materials Science Forum, 2008, 591-593, 3-7