Abstract Two different distributions of recrystalline grains were obtained on a cold-rolled 316L stainless steel through isochronal annealing (IA) and electromagnetic induction heating (EMIH), respectively. The microstructure and mechanical properties of the alloys after isothermal annealing and electromagnetic induction heating were observed and tested. The effects of recrystallization distribution on the mechanical properties of 316L stainless steel were studied. The results show that, the recrystalline grains are uniformly distributed in the IA sample. While a gradient distribution is obtained in the EMIH sample where the volume fraction and grain size of recrystalline grains are declined with depths increased. There are same volume fraction of recrystalline grains and similar strength-ductility synergy in the IA and EMIH samples. The difference in the distribution of recrystalline grains has no significant effects on the mechanical properties of 316L stainless steel. The tensile ductility of the annealed 316L stainless steel is mainly depended on the network formed by the recrystallization and nanotwins. The deformation ability of the network is insensitive to the distribution of the recrystalline grains. Therefore, the effects of the recrystallization distribution on the mechanical properties are suppressed in 316L stainless steel.
LU Jiaxin,CHEN Zhakun,FANG Tiehui. Effects of distribution of recrystalline grains on mechanical properties of 316L stainless steel[J]. Materials Science and Engineering of Powder Metallurgy, 2018, 23(5): 475-481.
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2018, Vol. 23 
