回火温度对冶金锯片用钢65Mn组织及性能的影响  

Effect of temper temperature on microstructure and mechanical properties of 65Mn saw blade for metallurgy

作　　者：苑少强[1] 王春[1] 梁国俐[1] 郭继富[2] 韩会杰[2] 

机构地区：[1]唐山学院科研处,唐山063000 [2]唐山冶金锯片有限公司,唐山063020

出　　处：《机械设计与制造》2010年第4期123-125,共3页Machinery Design & Manufacture

基　　金：唐山市科学技术研究与发展计划资助(08160201A-1.1)

摘　　要：利用金相观察、力学性能测试等手段,在(360～560)℃温度范围内对冶金锯片用钢65Mn进行了连续回火处理。结果显示:随着回火温度的升高,合金由淬火马氏体逐渐转化为回火马氏体、回火马氏体+回火索氏体及回火索氏体;试样的强度及硬度连续下降。在(400～420)℃之间,发现了回火脆性,冲击值、断面收缩率和延伸率明显降低。Using metallographic observation and mechanical measurement, metallurgical saw blade made of 65Mn steel was continuously tempered at （360-560 ）℃.The experimental results demonstrated that：with the increasing tempered temperature ,the quenched martens ite will transform into the tempered martensite,tempered martensite＋tempered sorbite or tempered sorbite,respectively;the strength and hardness of samples declined continuously. At about （400-420）℃,the temper brittleness occurred which resulted in the impact value ,reduction area and elongation percent decreased.

关 键 词：冶金锯片 65Mn 回火组织 力学性能 

分 类 号：TH16[机械工程—机械制造及自动化] TG333.22[金属学及工艺—金属压力加工]