Influence of laser beam profile on the selective laser melting process of AlSi10Mg

被引：56

作者：

Wischeropp, Tim Marten ^{[1
]}

Tarhini, Hussein ^{[2
]}

Emmelmann, Claus ^{[1
,2
]}

机构：

[1] Fraunhofer Res Inst Addit Mfg Technol IAPT, Schleusengraben 14, D-21029 Hamburg, Germany

[2] Hamburg Univ Technol, Inst Laser & Syst Technol iLAS, Schwarzenberg Campus 1, D-21073 Hamburg, Germany

来源：

JOURNAL OF LASER APPLICATIONS | 2020年 / 32卷 / 02期

基金：

欧盟地平线“2020”;

关键词：

additive manufacturing; selective laser melting; process optimization; beam shaping; beam profile; SIMULATION;

D O I：

10.2351/7.0000100

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Selective laser melting (SLM) offers great potential to manufacture customized and complex metallic parts. Major drawbacks that limit its industrial application are the high cost of the process that is related to low process speeds and issues with reproducibility. One important process parameter that has the potential to increase the reproducibility and speed of the process is the laser beam intensity profile. Since its influence has not been sufficiently investigated, the goal of this study is to analyze the effect of the beam profile on the SLM process of AlSi10Mg. Single tracks and density cubes are manufactured with different process parameters and two beam profiles (standard Gaussian and Donut beam profiles) and analyzed with respect to appearance, the size of melt tracks, porosity, and the types of defect. The results reveal several advantages of the Donut beam profile such as fewer defects and a significantly broader process window that promises a more robust process.

引用

页数：11

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