AlSi10Mg激光粉末床熔融成形熔道质量稳定性研究OA
Study of the stability of the AlSi10Mg deposited tracks fabricated by laser powder bed fusion
基于激光粉末床熔融(Laser Powder Bed Fusion,LPBF)成形技术,针对工艺参数对铝合金熔道成形质量的影响规律进行研究.通过工艺实验与数值仿真,阐明LPBF成形过程中输入线能量密度(Linear En-ergy Density,LED)对熔道成形质量稳定性的影响规律.结果表明随着输入线能量密度的升高,熔道稳定性先升高后降低.当输入线能量密度在0.55～1.0 J/mm时,熔道表面光滑,粉末黏附颗粒少,熔道高度数值离散程度小,成形质量稳定.当线能量密度相同时,适当增加激光功率可以提升熔道成形质量的稳定性.
During the Laser Powder Bed Fusion(LPBF)process,the effect of the process parameters on the forming quality of the deposited tracks were investigated.The influence mechanism of the input Linear Energy Density(LED)on the stability of the deposited tracks were elucidated by combining the process experiment and numerical simulation.The results demonstrated that the stability of the de-posited tracks increased at first and then decreased as LED increased.When the LED was in the range of 0.55-1.0 J/mm,the deposited tracks with a smooth surface could be formed and fewer satellites could be observed adhering to the surface.In addition,the coefficient of variation of the deposited tracks height was low and the forming quality was good.Alternatively,the quality of the deposited tracks could be improved by increasing the laser power appropriately when the LED was constant.
杨涛;陈香媛
常州大学 机械与轨道交通学院,江苏 常州 213164南京理工大学 机械工程学院,江苏 南京 210094
矿业与冶金
激光粉末床熔融铝合金单道成形稳定性
laser powder bed fusionaluminum alloysingle tracksstability
《常州大学学报（自然科学版）》 2026 (1)
15-22,92,9
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