Selective laser melting of AlSi10 Mg: Influence of process parameters on Mg2Si precipitation and Si spheroidization

被引：70
|
作者：
Biffi, C. A. [1 ]
Fiocchi, J. [1 ]
Tuissi, A. [1 ]
机构：
[1] CNR, Inst Condensed Matter Chem & Technol Energy, Unit Lecco, CNR ICMATE, Via Previati 1E, I-23900 Lecce, Italy
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2018年 / 755卷
关键词：
Selective laser melting; Additive manufacturing; AlSi10; Mg; Thermal analysis; Microstructure; ALUMINUM-ALLOY; MECHANICAL-PROPERTIES; MELTED ALSI10MG; MICROSTRUCTURE; POWDER; ROUGHNESS; PRODUCTS; PROPERTY; STRENGTH; BEHAVIOR;
D O I：
10.1016/j.jallcom.2018.04.298
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In Selective Laser Melting (SLM) both structural and functional properties of built parts are drastically affected by the process parameters, such as laser beam power, exposure time and building platform temperature. The effect of the mentioned parameters on the microstructure evolution and mechanical properties of AlSi10 Mg SLM builts were investigated. It was found that chemical composition, melting point and phases morphology were not varied. On the contrary, thermal analysis indicated that Mg2Si precipitation as well as Si spheroidization phenomena were slightly affected by laser energy density. This effect becomes relevant for choosing the right thermal treatments required for mechanical property optimization of SLM built Al alloy components. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：100 / 107
页数：8
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