Influence of process parameters and aging treatment on the microstructure and mechanical properties of AlSi8Mg3 alloy fabricated by selective laser melting

被引：24

作者：

Geng, Yaoxiang ^{[1
]}

Tang, Hao ^{[1
]}

Xu, Junhua ^{[1
]}

Hou, Yu ^{[1
]}

Wang, Yuxin ^{[1
]}

He, Zhen ^{[1
]}

Zhang, Zhijie ^{[1
]}

Ju, Hongbo ^{[1
]}

Yu, Lihua ^{[1
]}

机构：

[1] Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212003, Jiangsu, Peoples R China

来源：

INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS | 2022年 / 29卷 / 09期

基金：

中国国家自然科学基金;

关键词：

AlSi8Mg3; alloy; selective laser melting; process parameters; microstructure; aging treatment; mechanical properties; ALSI10MG ALLOY; HEAT-TREATMENT; ENERGY DENSITY; MG ALLOYS; STRENGTH; BEHAVIOR; PRECIPITATION; SC; ANISOTROPY; PARTICLES;

D O I：

10.1007/s12613-021-2287-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Many studies have investigated the selective laser melting (SLM) of AlSi10Mg and AlSi7Mg alloys, but there are still lack of researches focused on Al-Si-Mg alloys specifically tailored for SLM. In this work, a novel high Mg-content AlSi8Mg3 alloy was specifically designed for SLM. The results showed that this new alloy exhibited excellent SLM processability with a lowest porosity of 0.07%. Massive lattice distortion led to a high Vickers hardness in samples fabricated at a high laser power due to the precipitation of Mg2Si nanoparticles from the alpha-Al matrix induced by high-intensity intrinsic heat treatment during SLM. The maximum microhardness and compressive yield strength of the alloy reached HV (211 +/- 4) and (526 +/- 12) MPa, respectively. After aging treatment at 150 degrees C, the maximum microhardness and compressive yield strength of the samples were further improved to HV (221 +/- 4) and (577 +/- 5) MPa, respectively. These values are higher than those of most known aluminum alloys fabricated by SLM. This paper provides a new idea for optimizing the mechanical properties of Al-Si-Mg alloys fabricated using SLM.

引用

页码：1770 / 1779

页数：10

共 53 条

[1] The microstructure and mechanical properties of selectively laser melted AlSi10Mg: The effect of a conventional T6-like heat treatment [J].

Aboulkhair, Nesma T. ;

Maskery, Ian ;

Tuck, Chris ;

Ashcroft, Ian ;

Everitt, Nicola M. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2016, 667 :139-146

[2] Process optimization and mechanical property evolution of AlSiMg0.75 by selective laser melting [J].

Bai, Yuchao ;

Yang, Yongqiang ;

Xiao, Zefeng ;

Zhang, Mingkang ;

Wang, Di .

MATERIALS & DESIGN, 2018, 140 :257-266

[3] On the limitations of Volumetric Energy Density as a design parameter for Selective Laser Melting [J].

Bertoli, Umberto Scipioni ;

Wolfer, Alexander J. ;

Matthews, Manyalibo J. ;

Delplanque, Jean-Pierre R. ;

Schoenung, Julie M. .

MATERIALS & DESIGN, 2017, 113 :331-340

[4] Densification, microstructure and mechanical properties of an Al-14.1Mg-0.47Si-0.31Sc-0.17Zr alloy printed by selective laser melting [J].

Bi, Jiang ;

Lei, Zhenglong ;

Chen, Yanbin ;

Chen, Xi ;

Tian, Ze ;

Liang, Jingwei ;

Qin, Xikun ;

Zhang, Xinrui .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2020, 774

[5] Microstructure and mechanical properties of a novel Sc and Zr modified 7075 aluminum alloy prepared by selective laser melting [J].

Bi, Jiang ;

Lei, Zhenglong ;

Chen, Yanbin ;

Chen, Xi ;

Tian, Ze ;

Liang, Jingwei ;

Zhang, Xinrui ;

Qin, Xikun .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2019, 768

[6] Microstructure and mechanical properties of TiB2-reinforced 7075 aluminum matrix composites fabricated by laser melting deposition [J].

Bi Jiang ;

Lei Zhenglong ;

Chen Xi ;

Li Peng ;

Lu Nannan ;

Chen Yanbin .

CERAMICS INTERNATIONAL, 2019, 45 (05) :5680-5692

[7] Continuous wave vs pulsed wave laser emission in selective laser melting of AlSi10Mg parts with industrial optimized process parameters: Microstructure and mechanical behaviour [J].

Biffi, C. A. ;

Fiocchi, J. ;

Bassani, P. ;

Tuissi, A. .

ADDITIVE MANUFACTURING, 2018, 24 :639-646

[8] Selective laser melting of AlSi10 Mg: Influence of process parameters on Mg2Si precipitation and Si spheroidization [J].

Biffi, C. A. ;

Fiocchi, J. ;

Tuissi, A. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2018, 755 :100-107

[9] Microstructure evolution and mechanical properties at high temperature of selective laser melted AlSi10Mg [J].

Cao, Y. ;

Lin, X. ;

Wang, Q. Z. ;

Shi, S. Q. ;

Ma, L. ;

Kang, N. ;

Huang, W. D. .

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY, 2021, 62 :162-172

[10] Effect of grain size inhomogeneity of ingot on dynamic softening behavior and processing map of Al-8Zn-2Mg-2Cu alloy [J].

Feng, Di ;

Wang, Guoying ;

Chen, Hongmei ;

Zhang, XinMing .

METALS AND MATERIALS INTERNATIONAL, 2018, 24 (01) :195-204

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