应用激光, 2019, 39 (1): 42, 网络出版: 2019-04-16   

激光熔覆参数对Ni204合金涂层形貌及组织的影响

The Influence of Laser Cladding Parameters on Morphology and Microstructure of Ni204 Alloy Cladding Layer
作者单位
1 东北大学机械工程与自动化学院, 辽宁 沈阳 110819
2 沈阳精新再制造有限公司, 辽宁 沈阳 110142
摘要
利用激光熔覆技术对Ni204进行了单道正交试验, 采用激光共聚焦显微镜测量熔道几何尺寸及组织, 采用方差分析不同工艺参数对试样形貌以及组织的影响。结果表明, 功率对熔宽、熔深影响最显著; 扫描速度对熔高、宽高比(W/H)、润湿角影响最显著; 能量密度过小时, Ni204合金粉末在基体上没有形成熔池, 熔池边界处组织为柱状晶, 熔池内组织生长时间短且不易再结晶, 熔池内为枝晶。通过分析, 最优工艺参数组为Lp=750 W, Pfr=0.8 r/min, Ss=480 mm/min与Lp=900 W, Pfr=1 r/min, Ss=480 mm/min。可以在保证横向、纵向搭接的同时又不降低熔覆效率。
Abstract
The single pass orthogonal test was carried out for Ni204 by laser cladding technology. The geometry size and microstructure of the clad track were measured by laser confocal microscopy. The effects of different process parameters on the morphology and microstructure of the samples were analyzed by variance analysis. The results show that the power has the most significant influence on the melting width and depth. The influence of scanning speed on the melting height, the ratio of width and height and wetting angle was most significant. When the energy density is too small, the Ni204 alloy powder does not generate a molten pool on the substrate. The microstructure at the boundary of the molten pool is columnar crystal. In the molten pool, the grain growth time is short and recrystallization is not easy, and the molten pool is dendritic. Through analysis, the optimal process parameter groups were Lp=750 W, Pfr=0.8 r/min, Ss=480 mm/min and Lp=900 W, Pfr=1 r/min, Ss=480 mm/min which can ensure the horizontal and vertical overlap without reducing the cladding efficiency.

赵雨, 王松, 付建巍, 宋博学, 杜春战, 于天彪. 激光熔覆参数对Ni204合金涂层形貌及组织的影响[J]. 应用激光, 2019, 39(1): 42. Zhao Yu, Wang Song, Fu Jianwei, Song Boxue, Do Xuanchien, Yu Tianbiao. The Influence of Laser Cladding Parameters on Morphology and Microstructure of Ni204 Alloy Cladding Layer[J]. APPLIED LASER, 2019, 39(1): 42.

本文已被 1 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!