Strength and strain hardening of a selective laser melted AlSi10Mg alloy

被引：374

作者：

Chen, B. ^{[1
]}

Moon, S. K. ^{[2
]}

Yao, X. ^{[3
]}

Bi, G. ^{[3
]}

Shen, J. ^{[1
]}

Umeda, J. ^{[1
]}

Kondoh, K. ^{[1
]}

机构：

[1] Osaka Univ, Joining & Welding Res Inst, 11-1 Mihogaoka, Osaka 5670047, Japan

[2] Nanyang Technol Univ, Sch Mech & Aerosp Engn, 50 Nanyang Ave, Singapore 639798, Singapore

[3] Singapore Inst Mfg Technol, 71 Nanyang Dr, Singapore 638075, Singapore

来源：

SCRIPTA MATERIALIA | 2017年 / 141卷

关键词：

Aluminum alloys; Selective laser melting; Grain boundaries; Eutectic solidification; Work hardening; YIELD STRENGTH; DEFORMATION; MODEL;

D O I：

10.1016/j.scriptamat.2017.07.025

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this paper, we report that a selective laser melted (SLM) AISi10Mg alloy has unique hierarchical microstructures. There are micro-sized Al grains and transgranular ultrafine cellular structures around primary Al, and the cell boundary is made up of alternate eutectic Si and eutectic Al phases. The SLM AlSi10Mg alloy has both high tensile strength and high strain-hardening capability, which are superior to Al-Si alloys fabricated by conventional powder metallurgy and cast methods. Post-tensile high-resolution microscopy analyses provide further evidence supporting Orowan looping as a strengthening mechanism of the SLM Al-Si alloy. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：45 / 49

页数：5

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