Insight into the partial solutionisation of a high pressure die-cast Al-Mg-Zn-Si alloy for mechanical property enhancement

Wenchao Yang; Lin Liu; Jun Zhang; Shouxun Ji

doi:10.1016/j.msea.2016.11.028

Insight into the partial solutionisation of a high pressure die-cast Al-Mg-Zn-Si alloy for mechanical property enhancement

Wenchao Yang, Lin Liu, Jun Zhang, Shouxun Ji

School of Materials Sience and Engineering

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

13 Scopus citations

Abstract

A partial solution treatment was investigated to enhance the mechanical properties for a die-cast Al-Mg-Zn-Si alloy. The strengthening mechanism was identified that the Mg₃₂(Al, Zn)₄₉ intermetallics and equilibrium η-MgZn₂ phase formed in the as-cast microstructure were partially dissolved into the α-Al matrix during solutionising and the fine semi-coherent η'-MgZn₂ phase was precipitated during subsequent aging. Consequently, the unique microstructure was characterised by the co-existence of equilibrium η-MgZn₂ phase and metastable η'-MgZn₂ phase in the α-Al matrix, together with the un-changed Mg₂Si eutectic and remnant Mg₃₂(Al, Zn)₄₉ intermetallics in the Al-Mg-Zn-Si alloy.

Original language	English
Pages (from-to)	85-89
Number of pages	5
Journal	Materials Science and Engineering: A
Volume	682
DOIs	https://doi.org/10.1016/j.msea.2016.11.028
State	Published - 13 Jan 2017

Keywords

Aluminium alloys
Heat treatment
High pressure die-casting
Mechanical property
Microstructure

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10.1016/j.msea.2016.11.028

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title = "Insight into the partial solutionisation of a high pressure die-cast Al-Mg-Zn-Si alloy for mechanical property enhancement",

abstract = "A partial solution treatment was investigated to enhance the mechanical properties for a die-cast Al-Mg-Zn-Si alloy. The strengthening mechanism was identified that the Mg32(Al, Zn)49 intermetallics and equilibrium η-MgZn2 phase formed in the as-cast microstructure were partially dissolved into the α-Al matrix during solutionising and the fine semi-coherent η'-MgZn2 phase was precipitated during subsequent aging. Consequently, the unique microstructure was characterised by the co-existence of equilibrium η-MgZn2 phase and metastable η'-MgZn2 phase in the α-Al matrix, together with the un-changed Mg2Si eutectic and remnant Mg32(Al, Zn)49 intermetallics in the Al-Mg-Zn-Si alloy.",

keywords = "Aluminium alloys, Heat treatment, High pressure die-casting, Mechanical property, Microstructure",

author = "Wenchao Yang and Lin Liu and Jun Zhang and Shouxun Ji",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2017",

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doi = "10.1016/j.msea.2016.11.028",

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TY - JOUR

T1 - Insight into the partial solutionisation of a high pressure die-cast Al-Mg-Zn-Si alloy for mechanical property enhancement

AU - Yang, Wenchao

AU - Liu, Lin

AU - Zhang, Jun

AU - Ji, Shouxun

PY - 2017/1/13

Y1 - 2017/1/13

N2 - A partial solution treatment was investigated to enhance the mechanical properties for a die-cast Al-Mg-Zn-Si alloy. The strengthening mechanism was identified that the Mg32(Al, Zn)49 intermetallics and equilibrium η-MgZn2 phase formed in the as-cast microstructure were partially dissolved into the α-Al matrix during solutionising and the fine semi-coherent η'-MgZn2 phase was precipitated during subsequent aging. Consequently, the unique microstructure was characterised by the co-existence of equilibrium η-MgZn2 phase and metastable η'-MgZn2 phase in the α-Al matrix, together with the un-changed Mg2Si eutectic and remnant Mg32(Al, Zn)49 intermetallics in the Al-Mg-Zn-Si alloy.

AB - A partial solution treatment was investigated to enhance the mechanical properties for a die-cast Al-Mg-Zn-Si alloy. The strengthening mechanism was identified that the Mg32(Al, Zn)49 intermetallics and equilibrium η-MgZn2 phase formed in the as-cast microstructure were partially dissolved into the α-Al matrix during solutionising and the fine semi-coherent η'-MgZn2 phase was precipitated during subsequent aging. Consequently, the unique microstructure was characterised by the co-existence of equilibrium η-MgZn2 phase and metastable η'-MgZn2 phase in the α-Al matrix, together with the un-changed Mg2Si eutectic and remnant Mg32(Al, Zn)49 intermetallics in the Al-Mg-Zn-Si alloy.

KW - Aluminium alloys

KW - Heat treatment

KW - High pressure die-casting

KW - Mechanical property

KW - Microstructure

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U2 - 10.1016/j.msea.2016.11.028

DO - 10.1016/j.msea.2016.11.028

M3 - 文章

AN - SCOPUS:84995741182

SN - 0921-5093

VL - 682

SP - 85

EP - 89

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

ER -

Insight into the partial solutionisation of a high pressure die-cast Al-Mg-Zn-Si alloy for mechanical property enhancement

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