500MPa级CO_2焊焊丝微合金化元素对低温韧性的影响  

EFFECT OF MICRO - ALLOY ELEMENTS WITHIN CO_2 WELDING WIRE OF SOOMPa CLASS ON LOW TEMPERATURE TOUGHNESS

作　　者：孙维峰[1] 谭长瑛[1] 

机构地区：[1]哈尔滨焊接研究所

出　　处：《焊接》1996年第1期2-4,共3页Welding & Joining

摘　　要：研究了500MPa级CO_2焊实芯焊丝(简称焊丝)微合金化元素Ti及Ti-B(联合添加)对纯焊态组织熔敷金属低温冲击韧性的影响.结果表明Ti-B联合添加对稳定提高500MPa级CO_2焊焊丝熔敷金属的低温冲击韧性起着至关重要的作用.研制的高韧性500MPa级CO_2焊丝不但满足AWSA5.18—79的技术要求,而且具有适中的熔敷金属强度.Effect of micro - alloy elements such as Ti and Ti - B additions on low temperature toughness for CO2 welding wire of 500MPa class is studied. The experimental results show that the key factor is the combined addition of Ti - B for increasing low temperature toughness. High toughness CO2 welding wire of 500MPa class developed is not only fulfill total requirements to ER70 - 6 wire of AWS A5. 18 - 79, but also possesses suitable strength of weld metal.

关 键 词：焊丝 微合金化 韧性 低温 二氧化碳 焊接 

分 类 号：TG422.3[金属学及工艺—焊接]