摘要
研究了淬火工艺对27SiMn钢组织和力学性能的影响。实验表明，830-930℃温度范围内“零保温”淬火，随淬火温度升高，27SiMn钢的强度、硬度增加；高于930℃后，强度、硬度逐步下降。该钢“零保温”淬火得到细小的板条状马氏体组织，其原因与奥氏体晶粒细化和奥氏体中碳分布不均匀有关。采用（910±10）℃淬火、（630±10）℃回火的“零保温”调质工艺处理的27SiMn钢缸体，力学性能完全满足技术要求。
The effect of quenching technology on the microstructure and mechanical properties of 27SiMn steel was stud-ied. Experiment turns out that the strength and hardness of 27SiMn steel which was quenched in 830-930℃ with “zero holding time”, increase with quenching temperature going up, and then begin to fall down above 930℃. The fine lath martensite was obtained in the 27SiMn steel after “zero holding time” quenching, which are due to the fined austenite grain and the non-uniform density of carbon in austenite. The mechanical property of 27SiMn steel cylinder heat-treated with “zero holding time” （910±10）℃ quenching and （630±10）℃ tempering can meet the technology needs.
出处
《矿冶工程》
CAS
CSCD
北大核心
2007年第4期80-82,共3页
Mining and Metallurgical Engineering
基金
河南省自然科学基金资助项目(0511052600)
关键词
金属热处理
27SIMN钢
“零保温”淬火
力学性能
显微组织
heat treatment of metal
27SiMn steel
“zero holding time” quenching
mechanical property
microstructure
