摘要
在低碳钢圆管表面使用微束等离子弧熔覆了Ni基合金。采用扫描电镜、X射线衍射和显微硬度计研究了不同扫描速度熔覆层的组织形貌、结构、成分与性能。结果表明,随着扫描速度的增大,熔池趋向不稳定,粉末利用率下降,同时热影响区减小,组织细化,稀释率降低。
Ni-based alloy coatings were obtained by using the micro-plasma arc on the surface of the low carbon steel pipe. Microstructure,microhardness,composition and properties of the cladding coatings under different sweeping speeds were analyzed by SEM,XRD and Viekers hardness tester. The results show that with increasing of the sweeping speed, the molten pool becomes unstable and the powder utilization decreases,while at the same time,the heat-affected zone reduces, the microstructure gets refined and the dilution rate is lowered.
出处
《金属热处理》
CAS
CSCD
北大核心
2008年第9期9-11,共3页
Heat Treatment of Metals
作者简介
夏丹（1983．10-），男，河南邓州人，博士生，主要从事等离子熔覆研究工作。联系电话：13581620239 E-mail：floralheaven_dan@yahoo．com．cn．
