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通过实验,研究热处理工艺对新材质车轴钢LZ45CrV的组织、晶粒分布规律及力学性能的影响。结果表明:一次正火+回火的最佳工艺为850℃×1.8 min/mm正火+500℃回火;二次正火+回火的最佳工艺为910℃×2.7 min/mm+790℃×1.5 min/mm+500℃回火。
Through experiments, the effect of heat treatment process on microstructure, grain distribution and mechanical properties of LZ45CrV steel was investigated. The results showed that the optimum process of normalizing and tempering at one time was 850 ℃ × 1.8 min / mm normalizing and 500 ℃ tempering. The optimum condition of secondary normalizing and tempering was 910 ℃ × 2.7 min / mm + 790 ℃ × 1.5 min / mm +500 ℃ tempering.