Layer Thickness for SLM of 3D Printed AlSi10Mg Alloys

doi:10.3969/j.issn.1004-132X.2022.08.010

Abstract

Abstract: Based on three processing parameter combinations of optimized layer thickness, the influences of processing parameter combinations on the basic properties of AlSi10Mg alloy samples printed by SLM was analyzed. In samples of the three processing parameter combinations, hardness is more than 63HRB, wear loss of per area is below 1.5×10-5 g/(s·mm2), porosity is below 0.05%, tensile strength is higher than 440 MPa, and dimensional errors are within ± 0.1 mm. Surface roughness Ra of the upper surface is less than 4 μm, and surface roughness Ra of the side surface is less than 5 μm. The surface quality of the samples printed by the layer thickness 30 μm is the best.

Key words: selective laser melting(SLM), layer thickness, AlSi10Mg alloy, 3D printing

摘要： 基于铺粉厚度优选出的3个工艺参数组合，分析了工艺参数组合对激光选区熔化技术成形AlSi10Mg合金试样基本性能的影响。3个工艺参数组合成形的试样硬度均高于63HRB，上表面单位面积磨损量均低于1.5×10-5 g/(s·mm2)，孔隙率在0.05%以下，抗拉强度高于440 MPa，成形的测试试样尺寸误差均在±0.1 mm以内。试样上表面的表面粗糙度Ra在4 μm以下，侧表面的表面粗糙度Ra在5 μm以下。铺粉厚度30 μm的试样表面质量最优。

关键词: 激光选区熔化, 铺粉厚度, AlSi10Mg合金, 3D打印

CLC Number:

TN249

史振伟, 王敏杰, 戚文军, 牛留辉, 刘建业, 张佳琪, 刘煜, 王金海. 激光选区熔化3D打印AlSi10Mg合金的铺粉厚度[J]. 中国机械工程, 2022, 33(08): 959-964.

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