Equalization of Ti 6Al 4V alloy welded joint by scanning electron beam welding

查看全文 作　　者：Chen Xiaofeng(陈晓风)[1];Han Zhong(韩忠)[2];Lou Xinfang(楼新芳)[1];Hu Chuanshun(胡传顺)[2]; Sun Changyi(孙长义)[1] 机构地区：[1]Chinese Acad Sci, Inst Met Res, Shenyang 110015, Peoples R China 出　　处：《中国有色金属学会会刊:英文版》索引1999年第9卷第3期,共6页 摘　　要：The equalization of Ti 6Al 4V alloy welded joint with base metal on corrosion resistance, strength and ductility was studied. The solidification microstructure is transformed from 650 μm columnar grains to 100 μm equiaxed grains by scanning electron beam welding. The anodic polarization curve of 150 μm equiaxed grains coincides with that of base metal. Equal corrosion resistance between weld metal and base metal was obtained. Uniform microstructure and solute distribution are the basis of equalization. Corrosion rate of weld with 150 μm equiaxed grains is the lowest, 2.45 times lower than that of 650 μm columnar grains. Weld strength is 98% as much as that of base metal, yield strength ratio is 99.5%, which is 3.6% higher than that of base metal. 关 键 词：SCANNING electron beam WELDING TITANIUM ALLOY WELDING equalizationDocument code: A