45钢螺柱亚温淬火工艺的研究  

Study on Subcritical Quenching Process for 45 Steel Stud

作　　者：王海瑞[1] 李安铭[1] 王雷 

机构地区：[1]河南理工大学材料科学与工程学院,河南焦作454003 [2]焦作市迈科冶金机械有限公司,河南焦作454000

出　　处：《热加工工艺》2009年第18期122-123,126,共3页Hot Working Technology

基　　金：河南省自然科学基金资助项目(0511052600)

摘　　要：研究了45钢亚温淬火组织与性能,分析了显微组织与性能的关系。结果表明:在740～820℃,随淬火温度升高,45钢淬火组织中铁素体量逐渐减少;其分布形态也由块状、网状变成细小颗粒状,材料的综合性能得以改善。实验得出,最合理的亚温淬火工艺是(790±5)℃淬火,(550±10)℃回火。The microstructure and properties of 45 steel after subcritically-quenching were studied. The relationship between the microstructure and properties were discussed. The results show that the ferrite contents of 45 steel quenched microstructure decrease gradually in the temperature range of 740 4820℃ and ferrite distributing form changes from block, mesh into a small mesh granular in 45 steel quenched microstructure. General properties of materials improve. The experiment obtains the most reasonable subcritical quenching process： quenching at 790℃ for 5 h, tempering at 550℃ for 10 h.

关 键 词：45钢 亚温淬火 力学性能 显微组织 

分 类 号：TG156.3[金属学及工艺—热处理]