Strength and strain hardening of a selective laser melted AlSi10Mg alloy

B. Chen; S. K. Moon; X. Yao; G. Bi; J. Shen; J. Umeda; K. Kondoh

doi:10.1016/j.scriptamat.2017.07.025

Strength and strain hardening of a selective laser melted AlSi10Mg alloy

B. Chen, S. K. Moon, X. Yao, G. Bi, J. Shen, J. Umeda, K. Kondoh

Research output: Contribution to journal › Article › peer-review

390 Scopus citations

Abstract

In this paper, we report that a selective laser melted (SLM) AlSi10Mg 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.

Original language	English
Pages (from-to)	45-49
Number of pages	5
Journal	Scripta Materialia
Volume	141
DOIs	https://doi.org/10.1016/j.scriptamat.2017.07.025
State	Published - Dec 2017
Externally published	Yes

Keywords

Aluminum alloys
Eutectic solidification
Grain boundaries
Selective laser melting
Work hardening

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10.1016/j.scriptamat.2017.07.025

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title = "Strength and strain hardening of a selective laser melted AlSi10Mg alloy",

abstract = "In this paper, we report that a selective laser melted (SLM) AlSi10Mg 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.",

keywords = "Aluminum alloys, Eutectic solidification, Grain boundaries, Selective laser melting, Work hardening",

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T1 - Strength and strain hardening of a selective laser melted AlSi10Mg alloy

AU - Chen, B.

AU - Moon, S. K.

AU - Yao, X.

AU - Bi, G.

AU - Shen, J.

AU - Umeda, J.

AU - Kondoh, K.

PY - 2017/12

Y1 - 2017/12

N2 - In this paper, we report that a selective laser melted (SLM) AlSi10Mg 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.

AB - In this paper, we report that a selective laser melted (SLM) AlSi10Mg 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.

KW - Aluminum alloys

KW - Eutectic solidification

KW - Grain boundaries

KW - Selective laser melting

KW - Work hardening

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DO - 10.1016/j.scriptamat.2017.07.025

M3 - 文章

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SN - 1359-6462

VL - 141

SP - 45

EP - 49

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Strength and strain hardening of a selective laser melted AlSi10Mg alloy

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Keywords

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