【摘要】 采用力学性能测试、金相分析及扫描电子显微分析等手段研究了不同热处理制度对 ZG2 5 Cr13Ni Mo马氏体耐热不锈钢组织与性能的影响。结果表明 ,铸态试样经 90 0℃退火处理后 ,性能得不到改善 ,其塑性指标δ仅为 3.2 % ,ψ近似为零。该钢正火后可以获得马氏体 ,因此可采用正火和高温回火的方式取代传统的调质处理。本实验推荐的最佳热处理工艺为 10 5 0℃正火 ,然后 780℃回火更多还原

【Abstract】 The effect of heat treatment parameters on microstructure and properties of ZG25Cr13NiMo stainless heat resistant steel have been studied The plasticity of the steel is not improved after annealing at 900 ℃ with a δ of 3 2 % and ψ near to zero The steel is of martensite microstructure after normalization Therefore it is feasible to use normalization followed by high temperature tempering to replace traditional hardening and tempering The normalization at 1050 ℃ followed by tempering at 780 ℃ is recommended for the steel更多还原