K418镍基高温合金多层激光熔覆  

The Multilayer Laser Cladding of K418 Nickel Based Superalloy

作　　者：胡滨[1] 胡芳友[1] 姜伟[1] 卢长亮[1] 孙福娟[1] 

机构地区：[1]海军航空工程学院青岛分院,山东青岛266041

出　　处：《新技术新工艺》2008年第3期80-82,共3页New Technology & New Process

摘　　要：由于单层激光熔覆修复的厚度有限,无法满足深度损伤的修复。因此试验了YAG激光K418镍基高温合金多层熔覆的可行性。采用自配的镍基合金粉末,在工艺参数为电流160 A、脉宽8 ms、频率4 Hz时,用激光熔覆能够实现对K418镍基高温合金损伤结构的多层修复,获得了表面平整、连续,微观组织细密、均匀,与基体呈良好冶金结合,硬度高于基体,无缺陷的熔覆层。Because of the limited thickness of the rehabilitation by the monolayer laser cladding,it can't satisfy the rehabilitation of the depth.The possibility of the multilayer laser cladding of k418 nickel based superalloy of YAG laser is analyzed in this paper.Using the correct nickel based alloy powder,at the craft parameter of electric current 160 A,pulse width 8mses,the frequency 4 Hz,the surface is balanced and continuous.The microstructure is close and uniformity.The cladding is well combined with the substrate without flaw.The rigidity of the cladding is higher than the substrate.

关 键 词：激光熔覆 K418 微观组织 显微硬度 

分 类 号：O532.25[理学—等离子体物理]