沈阳航空航天大学学报2026，Vol.43Issue(4)：1-13,13.DOI:10.3969/j.issn.2095-1248.2026.04.001
激光参数对选区激光熔化高熵合金微磨削性能的影响
The influence of laser parameters on the micro-grinding performance of selective laser melting of high-entropy alloys
摘要
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.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Key words
selective laser melting/high-entropy alloy/micro-grinding/laser process parameters/surface roughness分类
航空航天引用本文复制引用
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):1-13,13.基金项目
国家自然科学基金(项目编号:52275412) （项目编号:52275412）
中央高校基本科研业务费专项资金(项目编号:N2403015). （项目编号:N2403015）
