摘要
利用激光焊工艺焊接了IC10单晶高温合金,分析了焊接速度对接头焊缝成形、横截面形貌以及显微组织的影响。结果表明,随着焊接速度的减小,焊缝的表面和背面宽度增大。不同焊接速度下焊缝的横截面均呈典型的"酒杯"状。焊缝主要由细晶区和胞状晶以及柱状晶组成。不同焊接速度下的焊缝中均存在沿晶界扩展的焊接裂纹。接头中晶粒的生长方向趋于一致,从而增大了接头裂纹的敏感性。
The IC10 single crystal superalloys are welded by the laser welding process,and the effects of welding speed on joint weld forming,cross-section morphology and microstructure are analyzed.The results show that the surface and back widths of welds increase with the decrease of welding speed.The cross-sections of welds under different welding speeds all show a typical goblet shape.The welds mainly consist of fine grains,cellular crystals and columnar crystals.The welding cracks extending along the grain boundaries always occur in welds under different welding speeds.The growing direction of the grains in joints tends to be the same,which increases the cracking susceptibility of joints.
作者
信纪军
方超
杨武雄
王善林
戴文华
卫靖
吴杰峰
宋云涛
Xin Jijun;Fang Chao;Yang Wuxiong;Wang Shanlin;Dai Wenhua;Wei Jing;Wu Jiefeng;Song Yuntao(Institute of Plasma Physics,Chinese Academy of Sciences,Hefei,Auhui 230031,China;University of Science and Technology of China,Hefei,Anhui 230026,China;Anhui Key Laboratory of Special Welding Technology,Huainan,Anhui 232000,China;Institute of Laser Engineering,Beijing University of Technology,Beijing 100124,China,5 National De fence Key Disciplines Laboratory of Light Alloy Processing Science and Technology Nanchang Hangkong University,Nanchang,Jiangxi 330063,China)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2018年第8期66-72,共7页
Chinese Journal of Lasers
基金
国家杰出青年科学基金(51525703)
