电磁搅拌对管线钢埋弧焊熔敷金属低温韧性的影响  

EFFECTS OF ELECTROMAGNETIC STIRRING ON THE LOW TEMPERATURE TOUGHNESS OF PIPE-LINE STEEL SAW DEPOSITED METALS

作　　者：国旭明[1] 钱百年[1] 薛小怀[1] 李晶丽[1] 张艳[1] 

机构地区：[1]中国科学院金属研究所,沈阳110015

出　　处：《金属学报》2000年第2期177-180,共4页Acta Metallurgica Sinica

基　　金：国家973计划资助!G1998061500

摘　　要：研究了电磁搅拌对管线钢埋弧焊熔敷金属低温韧性的影响，结果表明：电磁搅拌使０．２－０．６ μｍ的夹杂物数量增加，促进了奥氏体晶粒内针状铁素体的生成和细化，使晶内铁素体含量由８５．１％提高到９１．７％；抑制了晶界铁素体和侧板条铁素体的形成，使熔敷金属的低温冲击韧性明显提高。The effects of electromagnetic stirring on the low temperature toughness of pipe-line steel SAW deposited metal were investigated. The results show that the electromagnetic stirring increases the amount of inclusions with 0.2-0.6 μm diameter, which is suitable for the formation of acicular ferrite, promotes the formation of acicular ferrite within austenite grains and restricts the formation of grain boundary ferrite and side-plate ferrite. The low temperature charpy toughness of deposited metal is increased greatly.

关 键 词：电磁搅拌 低温韧性 管线钢 埋弧焊 熔敷金属 

分 类 号：TE973.4[石油与天然气工程—石油机械设备] TG457.11[金属学及工艺—焊接]