Estimation of phase transformation behavior and high temperature properties in SUS410 using visualization techniques

Abstract

Visualization of the microstructure formation process in SUS410 was considered combining the confocal scanning laser microscope (CSLM) and the multi-phase field method (MPFM). According to the in-situ observation using CSLM, γ-phase precipitation temperature falls greatly with an increase in cooling rate. Moreover, solidification and solid-state transformation behavior was analyzed by MPFM. Calculated tensile strength depend on the phase state corresponds to experimental results. It is thought that tensile strength and density at high temperature region are affected by cooling rate due to the delay of γ-phase formation.