正火对耐磨堆焊层组织与性能的影响  

Influence of Normalizing on Structure and Properties of Hardfacing Layer

作　　者：张佩 Zhang Pei(Shenyang Yuanda Environmental Engineering Co.,Ltd.,Shenyang 110027,Liaoning Province,China)

机构地区：[1]沈阳远大环境工程有限公司,辽宁沈阳110027

出　　处：《科学与信息化》2024年第7期86-88,92,共4页Technology and Information

摘　　要：利用手工电弧焊对16Mn进行堆焊,并对堆焊接头进行正火处理。通过对堆焊层组织和力学性能进行表征及分析,结果表明:堆焊层热处理前组织为低碳马氏体,具有很高的强度硬度以及耐磨性,正火后堆焊层组织为铁素体和珠光体。随正火温度升高,硬度及耐磨性逐渐降低;试样冲击韧性都有所提升,但随正火温度升高试样冲击韧性值呈现减小趋势,断口形式多为韧性断裂。Shielded metal arc welding is used for 16Mn surfacing and normalizing of welding joints.The structure and mechanical properties of surfacing layer are characterized and analyzed.The results show that:the structure of surfacing layer before heat treatment is low-carbon martensitic,with high strength of hardness and wear resistance,while the structure of surfacing layer after normalizing is ferrite and pearlite.With the normalizing temperature rises,the hardness and wear resistance gradually decrease;sample impact toughness improves,but shows a decreasing trend with the rising normalizing temperature,the fracture morphology is mostly the ductile fracture.

关 键 词：堆焊层 正火 组织 性能 

分 类 号：TG1[金属学及工艺—金属学]