亚温淬火对淬火态60Si2Mn钢组织与强韧性的影响  

Effect of Intercritical Hardening on Microstructure and Strength and Toughness of Quenched 60Si2Mn Steel

作　　者：凌文丹[1] 王海瑞[1] 李小飞[1] 

机构地区：[1]河南理工大学材料科学与工程学院

出　　处：《热处理技术与装备》2010年第4期13-16,共4页Heat Treatment Technology and Equipment

基　　金：河南省自然科学基金资助项目(0511052600)

摘　　要：采用正交回归处理的方法，研究亚温淬火对淬火态60Si2Mn钢力学性能的影响。60Si2Mn钢在770～810℃亚温淬火，随着淬火温度升高，试样的强度和硬度升高，800℃淬火时达到峰值，延伸率则单调下降。与此同时，铁素体量逐渐减少，马氏体量逐渐增加，铁素体形态为针状且均匀分布。在800℃淬火时，铁素体的含量和形态达到最佳，具有最好的综合力学性能。The experiment is designed by orthogonal regression to analyze the influence of intercritical quenching on quenched 60Si2Mn steel＇s mechanical properties. The steel is intercritically quenched at 780 - 810℃, with the quenching temperature going up, the strength and hardness increased and the elongation percentage decreased. 60Si2Mn steel has the highest strength and hardness at 800 ℃, meanwhile ferrites decreased and martensite increased, ferrite phase with needle-like is the uniform distribution. Quenched 60Si2Mn steel had the highest comprehensive mechanical properties which ferrite content and morphology achieve the best at 800℃.

关 键 词：60SI2MN钢 亚温淬火 正交回归 力学性能 

分 类 号：TG156.3[金属学及工艺—热处理] TG142.1[金属学及工艺—金属学]