Laser Polishing of Additive Manufactured Superalloy

被引:99
作者
Fang Zhihao [1 ]
Lu Libin [2 ]
Chen Longfei [1 ]
Guan Yingchun [2 ,3 ]
机构
[1] Beihang Univ, Sch Energy & Power Engn, 37 Xueyuan Rd, Beijing 100191, Peoples R China
[2] Beihang Univ, Sch Mech Engn & Automat, 37 Xueyuan Rd, Beijing 100191, Peoples R China
[3] Beihang Univ, Natl Engn Lab Addit Mfg Large Metall Components, 37 Xueyuan Rd, Beijing 100191, Peoples R China
来源
4TH CIRP CONFERENCE ON SURFACE INTEGRITY (CSI 2018) | 2018年 / 71卷
基金
北京市自然科学基金;
关键词
Laser polishing; Additive manufacturing; Inconel; 718; alloy; MICROSTRUCTURE; FRICTION; SURFACES; PARTS; WEAR;
D O I
10.1016/j.procir.2018.05.088
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Laser additive manufacturing has attracted considerable interest as a promising digital manufacturing technology in recent years. However, poor surface quality restricts its practical application. In this paper, we demonstrate the capability of laser polishing in rough surface of additive manufactured Inconel 718 alloy. Both as-received surface and laser-polished surface were analyzed carefully by Confocal Microscope, Scanning Electron Microscopy, Energy Dispersive Spectrometer and X-ray Diffraction. The results revealed that as-received Inconel 718 alloy with surface roughness more than 7 mu m could be reduced to less than 0.1 mu m through laser polishing (LP) process. Moreover, microstructure, micro-hardness and wear resistance of laser-polished zone were investigated. This preliminary study has shown the potential of laser polishing in improving surface finish and properties of additive manufactured superalloy without damage to the substrate. (C) 2018 The Authors. Published by Elsevier Ltd.
引用
收藏
页码:150 / 154
页数:5
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