Laser polishing of a high-entropy alloy manufactured by selective laser melting

被引：0

作者：

Tan, Xiaojun ^{[1
,2
,3
,4
]}

Xiao, Haibing ^{[1
]}

Wang, Zihong ^{[5
]}

Zhang, Wei ^{[1
]}

Sun, Zhijuan ^{[2
]}

Peng, Xuyun ^{[2
]}

Liu, Zhongmin ^{[3
,4
]}

Guo, Liang ^{[3
,4
]}

Zhang, Qingmao ^{[3
,4
]}

机构：

[1] Shenzhen Inst Informat Technol, Intelligent Mfg & Equipment Sch, Shenzhen 518172, Peoples R China

[2] Shenzhen City Polytech, Sino German Intelligent Mfg Sch, Shenzhen 518116, Peoples R China

[3] South China Normal Univ, Sch Informat & Optoelect Sci & Engn, Guangdong Prov Key Lab Nanophoton Funct Mat & Dev, Guangzhou 510006, Peoples R China

[4] Guangdong Prov Key Lab Ind Ultrashort Pulse Laser, Shenzhen 518055, Peoples R China

[5] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400045, Peoples R China

来源：

FRONTIERS OF MECHANICAL ENGINEERING | 2024年 / 19卷 / 05期

关键词：

laser polishing; selective laser melting; high-entropy alloy; surface roughness; mechanical performance; PICOSECOND LASER; HALL-PETCH; MICROSTRUCTURE; FRICTION; SURFACES;

D O I：

10.1007/s11465-024-0804-4

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The selective laser melting (SLM) technique applied to high-entropy alloys (HEAs) has attracted considerable attention in recent years. However, its practical application has been restricted by poor surface quality. In this study, the capability of laser polishing on the rough surface of a Co-free HEA fabricated using SLM was examined. Results show that the initial SLM-manufactured (as-SLMed) surface of the Co-free HEA, with a roughness exceeding 3.0 mu m, could be refined to less than 0.5 mu m by laser polishing. Moreover, the microstructure, microhardness, and wear resistance of the laser-polished (LP-ed) zone were investigated. Results indicate that compared with the microhardness and wear resistance of the as-SLMed layer, those of the LP-ed layer decreased by 4% and 11%, respectively, because of the increase in grain size and reduction of the BCC phase. This study shows that laser polishing has an excellent application prospect in surface improvement of HEAs manufactured by SLM.

引用

页数：14

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