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关于AlSi10Mg合金的选择性激光熔化（SLM）：工艺、微观结构及力学性能

On the Selective Laser Melting (SLM) of the AlSi10Mg Alloy: Process, Microstructure, and Mechanical Properties.

作者信息

Trevisan Francesco, Calignano Flaviana, Lorusso Massimo, Pakkanen Jukka, Aversa Alberta, Ambrosio Elisa Paola, Lombardi Mariangela, Fino Paolo, Manfredi Diego

机构信息

DISAT, Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy.

Centre for Sustainable Future Technologies @PoliTo, Istituto Italiano di Tecnologia, Corso Trento 21, 10129 Torino, Italy.

出版信息

Materials (Basel). 2017 Jan 18;10(1):76. doi: 10.3390/ma10010076.

DOI:10.3390/ma10010076
PMID:28772436
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5344617/
Abstract

The aim of this review is to analyze and to summarize the state of the art of the processing of aluminum alloys, and in particular of the AlSi10Mg alloy, obtained by means of the Additive Manufacturing (AM) technique known as Selective Laser Melting (SLM). This process is gaining interest worldwide, thanks to the possibility of obtaining a freeform fabrication coupled with high mechanical properties related to a very fine microstructure. However, SLM is very complex, from a physical point of view, due to the interaction between a concentrated laser source and metallic powders, and to the extremely rapid melting and the subsequent fast solidification. The effects of the main process variables on the properties of the final parts are analyzed in this review: from the starting powder properties, such as shape and powder size distribution, to the main process parameters, such as laser power and speed, layer thickness, and scanning strategy. Furthermore, a detailed overview on the microstructure of the AlSi10Mg material, with the related tensile and fatigue properties of the final SLM parts, in some cases after different heat treatments, is presented.

摘要

本综述的目的是分析和总结通过选择性激光熔化（SLM）这一增材制造（AM）技术获得的铝合金，特别是AlSi10Mg合金的加工技术现状。由于能够实现自由成型制造，并具备与非常精细的微观结构相关的高机械性能，这一工艺在全球范围内正引起越来越多的关注。然而，从物理角度来看，SLM非常复杂，这是因为集中激光源与金属粉末之间的相互作用，以及极其快速的熔化和随后的快速凝固。本综述分析了主要工艺变量对最终零件性能的影响：从起始粉末特性，如形状和粉末尺寸分布，到主要工艺参数，如激光功率和速度、层厚和扫描策略。此外，还详细概述了AlSi10Mg材料的微观结构，以及最终SLM零件在某些情况下经过不同热处理后的相关拉伸和疲劳性能。

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