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沈阳航空航天大学学报 >

2026 , Vol. 43 >Issue 4: 1 - 13

DOI: https://doi.org/10.3969/j.issn.2095-1248.2026.04.001

结构增材制造专栏

激光参数对选区激光熔化高熵合金微磨削性能的影响

  • 宋林原 , 1 ,
  • 魏子淇 2 ,
  • 尹馨苑 3 ,
  • 徐如矗 1 ,
  • 温雪龙 , 1
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  • 1. 东北大学 机械工程与自动化学院，沈阳 110819
  • 2. 沈阳建筑大学 机械工程学院，沈阳 110168
  • 3. 湖南工程学院 国际教育学院，湖南 湘潭 411104

宋林原（1998—），男，辽宁大连人，博士研究生，主要研究方向为金属增材制造，E-mail：

温雪龙（1985—），男，辽宁沈阳人，副教授，博士，主要研究方向为精密加工与磨削，E-mail：。

收稿日期: 2025-12-10

  修回日期: 2026-04-13

  录用日期: 2026-04-15

  网络出版日期: 2026-09-02

基金资助

国家自然科学基金(52275412)

中央高校基本科研业务费专项资金(N2403015)

收起

The influence of laser parameters on the micro-grinding performance of selective laser melting of high-entropy alloys

  • Linyuan SONG , 1 ,
  • Ziqi WEI 2 ,
  • Xinyuan YIN 3 ,
  • Ruchu XU 1 ,
  • Xuelong WEN , 1
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  • 1. School of Mechanical Engineering and Automation，Northeastern University，Shenyang 110819，China
  • 2. School of Mechanical Engineering，Shenyang Jianzhu University，Shenyang 110168，China
  • 3. International Education College，Hunan Institute of Engineering，Xiangtan 411104，China

Received date: 2025-12-10

  Revised date: 2026-04-13

  Accepted date: 2026-04-15

  Online published: 2026-09-02

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摘要

为了系统研究激光功率、激光扫描间距和激光扫描速度对高熵合金内部缺陷与微磨削性能的影响规律，采用在不同激光工艺参数组合下选区激光熔化成形的FeCoCrNiAl0.5高熵合金试件，通过金相显微镜与扫描电镜分析材料内部气孔与微裂纹等缺陷特征。以微磨削力、表面粗糙度、磨削表面形貌和亚表面损伤为评价指标开展微磨削单因素试验，定量分析不同激光参数制备试件的微磨削加工性能。结果表明，适度提高激光功率可减少气孔和裂纹、提高致密度与强度，使微磨削力增大、表面粗糙度降低；增大激光扫描间距会削弱熔道搭接、增加内部缺陷，虽磨削力降低，但表面与亚表面损伤和粗糙度加剧；适中的激光扫描速度有利于抑制缺陷、提高致密度和强度，从而改善表面质量。

关键词： 选区激光熔化; 高熵合金; 微磨削; 激光工艺参数; 表面粗糙度

本文引用格式

宋林原 , 魏子淇 , 尹馨苑 , 徐如矗 , 温雪龙 . 激光参数对选区激光熔化高熵合金微磨削性能的影响[J]. 沈阳航空航天大学学报, 2026 , 43(4) : 1 -13 . DOI: 10.3969/j.issn.2095-1248.2026.04.001

Abstract

To systematically investigate the effects of laser power， laser scanning spacing， and laser scanning speed on internal defects and micro-grinding performance of high-entropy alloys， FeCoCrNiAl0.5 high-entropy alloy samples formed by selective laser melting under different combinations of laser process parameters were used. The characteristics of internal defects such as pores and microcracks were analyzed by using metallographic microscopy and scanning electron microscopy. Single-factor tests on micro-grinding were conducted by using micro-grinding force， surface roughness， ground surface morphology， and subsurface damage as evaluation indicators to quantitatively analyze the micro-grinding performance of samples prepared with different laser parameters. The results show that moderately increasing laser power can reduce pores and cracks， improve density and strength， increase micro-grinding force， and reduce surface roughness. Increasing the laser scanning spacing weakens the weld overlap and increases internal defects. Although the grinding force decreases， surface and subsurface damage and roughness are exacerbated. A moderate laser scanning speed is beneficial for suppressing defects， improving density and strength， and thus improving surface quality.

Key words： selective laser melting; high-entropy alloy; micro-grinding; laser process parameters; surface roughness

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