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以系列温度-时间组合的退火试验考察了具有部分马氏体的410S铁素体不锈钢热轧态板材的再结晶与组织转变,并且用Larson-Miller(P=T(C+lgt))参数描述其再结晶过程,研究了其再结晶动力学。结果表明:410S不锈钢的再结晶退火与Larson-Miller参数之间存在良好的对应关系,确定了常数C值为19.5,随着P值的增加再结晶程度加大;构建了热轧态410S不锈钢退火-组织转变图,确定了热轧态410S的最佳再结晶工艺(780～800℃,30～50h);410S不锈钢的再结晶过程为Cr的原子扩散所控制,其再结晶激活能为278.5kJ/mol。
The recrystallization and microstructure transformation of hot-rolled 410S ferritic stainless steel with some martensite was investigated by a series of temperature-time annealing experiments. The Larson-Miller (P = T (C + lgt) The recrystallization process, its recrystallization kinetics. The results show that there is a good correspondence between the Larson-Miller parameters and the recrystallization annealing of 410S stainless steel, and the constant C value is determined to be 19.5. The degree of recrystallization increases with the increase of P value. The hot rolled 410S stainless steel is annealed - organization transformation diagram, the best recrystallization process (780 ~ 800 ℃, 30 ~ 50h) of hot rolled 410S was determined. The recrystallization process of 410S stainless steel was controlled by the atomic diffusion of Cr with the recrystallization activation energy of 278.5kJ / mol.