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Abstract
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The correlation between stacking fault energy (SFE) and lattice parameter of Fe–Cr–Ni austenitic stainless
steels was investigated. To obtain this relationship, four Fe–Cr–Ni alloy systems were considered. Molecular
dynamics (MD) studies were carried out to calculate the intrinsic stacking fault energy and lattice parameter
of Fe–Cr–Ni austenitic stainless steels as a function of composition. The embedded atom method (EAM)
inter-atomic potential was used in the MD studies. The results show that as the Cr content increases, the
SFE value signifcantly decreases while lattice parameter increases. Moreover, the results illustrates that
the addition of nickel content hardly changes the SFE values, but on the contrary, decreases the lattice
parameter. Almost linear dependence of SFE on lattice parameter could be established for Fe–Cr–Ni
austenitic stainless steels.
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