稀土氧化物对堆焊金属抗开裂性能的影响  

Effect of RE Oxide on Cracking Resistance of Hardfacing Metal

作　　者：杨庆祥[1] 苑辉[1] 廖波[1] 姚枚[1] 

机构地区：[1]燕山大学材料科学与化学工程学院,秦皇岛066004

出　　处：《中国稀土学报》1999年第3期240-243,共4页Journal of the Chinese Society of Rare Earths

基　　金：现代焊接生产技术国家重点实验室资助

摘　　要：采用金相和电镜等手段对堆焊裂纹形貌进行了观察， 并研究了稀土氧化物对堆焊金属抗开裂性能及塑、韧性的影响。结果表明， 堆焊金属中的开裂形式为结晶裂纹和淬硬裂纹， 加入稀土氧化物能提高堆焊金属的抗开裂性能。The crack morphology of hardfacing metal was investigated by means of optical and scanning electron microscopy. The effect of RE oxide on cracking resistance of hardfacing metal was studied. The results show that the main forms of cracks in hardfacing metal are primary crystallization crack and quench harding crack. The cracking resistance of hardfacing metal can be improved by adding RE oxide in coat of electrode.

关 键 词：轧辊 模具 堆焊 抗开裂性能 稀土氧化物 焊条 

分 类 号：TG422.1[金属学及工艺—焊接]