稀土钇及硼在3.5%镍电焊条中的行为  

Behavior of Rare-earth Yttrium and Boron in 3.5% Nickel-containing Welding Electrode

作　　者：徐越兰[1] 王克鸿[1] 王建平[1] 李鸿谋[1] 

机构地区：[1]南京理工大学

出　　处：《焊接学报》1997年第3期141-145,共5页Transactions of The China Welding Institution

摘　　要：对含镍３．５％低温钢手工电焊条配方中稀土钇与硼的作用进行了试验研究。试验证明：钇具有明显的脱氧效果，微量硼的加入可以进一步细化晶粒并起到净化焊缝的综合作用，对低温韧性的提高有显著效果。The investigation of effects of rare-earth yttrium and boron, which are in the 3.5% nickel-containing steel welding electrode on low temperature toughness has been carried out. The experimental results show that yttrium possesses an obvious action of deoxidization while the microelement boron can make crystal grains finer and can purify the filler metal, both can increase the low temperature toughness of weld metal markedly.

关 键 词：电焊 焊条 脱氧 低温 韧性 焊缝 

分 类 号：TG421[金属学及工艺—焊接]