Temperature Dependence of Fracture Behavior and Mechanical Properties of AISI 316 Austenitic Stainless Steel

A combination of fractographic and metallographic analysis during tensile tests over the temperature ranging from 20 °C to 750 were carried out investigate fracture behaviors deformation modes so as clarify dependence mechanical properties AISI 316 austenitic stainless steel. Planar slip mode was observed at due a relatively low SFE (stacking fault energies). Pronounced planar characteristics in range 350–550 °C, resultant localized led formation shear bands. The dislocation cross-slip much easier above 550 leading cell/subgrain structures. preferential microvoid initiation subsequent anisotropic growth behavior bands large-size shallow dimples on surfaces °C. However, tended elongate along direction necking region resulting small-size deep dimples. localization reduced uniform ability accelerated process bands, plateau elongation total higher capability tolerate through sustained resulted significant increase