重复加热对调质态45纲组织和性能的影响  

Influence of Repeated Heating on Microstructure and Property of Quenched and Tempered 45 Steel

作　　者：李文涛[1] 吴益文[2] 华沂[2] 蒋海宁[2] 胥成民[2] 吉静[2] 

机构地区：[1]华东理工大学,上海200237 [2]上海出入境检验检疫局工业品与原材料检测技术中心,上海200135

出　　处：《热处理》2010年第2期66-69,共4页Heat Treatment

基　　金："十一五"国家公益性科研项目(国家质检总局公益性行业专项)2007GYJ028<进出境再制造技术产品检测技术与监管模式研究>资助

摘　　要：对调质态45铜进行了模拟再制造工艺的重复加热试验,然后金相分析其显微组织并测定其力学性能。发现,重复加热对钢的显微组织和力学性能的影响不大,但发生微量塑性变形的零件或试样的屈服强度将随着重复加热次数的增多而明显下降。这种情况在制造工程中应以高度重视。Repeated heating test simulating remanufacturing process was performed for quenched and tempered 45 steel. Subsequently, the microstructure was metallographically examined and the mechanical properties were measured. It was revealed that the repeated heating had only slight influence on the mechanical properties of quenched and tempered 45 steel, while the yield strength of part or specimen lightly plastically deformed will be appreciably reduced with the increase of heating times. The above phenomenon is to be taken seriously in the remanufacturing engineering.

关 键 词：再制造 重复加热 45钢 塑性变形 

分 类 号：TG142.1[一般工业技术—材料科学与工程]