Microstructural characterization of high pressure die cast Mg-Zn-Al-RE alloys

Wenlong Xiao; Suming Zhu; Mark A. Easton; Matthew S. Dargusch; Mark A. Gibson; Jian Feng Nie

doi:10.1016/j.matchar.2012.01.001

Microstructural characterization of high pressure die cast Mg-Zn-Al-RE alloys

Wenlong Xiao^*
, Suming Zhu
, Mark A. Easton
, Matthew S. Dargusch
, Mark A. Gibson
, Jian Feng Nie

^*此作品的通讯作者

Monash University
University of Queensland
CSIRO

科研成果: 期刊稿件 › 文章 › 同行评审

33 引用（Scopus）

摘要

Mg-(1-10)Zn-(4-6)Al-4RE alloys were prepared by high pressure die casting and their microstructures were characterized. Optical observations revealed the presence of externally solidified grains (ESGs) in the microstructure. The amount of ESGs initially decreased with increasing Zn content, but further additions of Zn led to a steady increase in the amount of ESGs. The Mg-4Zn-4Al-4RE alloy was found to have the least ESGs and the most uniform grain structure. The alloys with higher Zn and Al contents showed a more dendritic microstructure with coarse RE-containing intermetallic phases and network of a Mg-Zn-Al ternary phase. Compared with the commercial AE44 (Mg-4Al-4RE) alloy, additions of Zn reduced the amount of Al-RE phases and resulted in the formation of Al2REZn2 phase.

源语言	英语
页（从-至）	28-36
页数	9
期刊	Materials Characterization
卷	65
DOI	https://doi.org/10.1016/j.matchar.2012.01.001
出版状态	已出版 - 3月 2012
已对外发布	是

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@article{f978e3ce091546aeaaa206c260fbf506,

title = "Microstructural characterization of high pressure die cast Mg-Zn-Al-RE alloys",

abstract = "Mg-(1-10)Zn-(4-6)Al-4RE alloys were prepared by high pressure die casting and their microstructures were characterized. Optical observations revealed the presence of externally solidified grains (ESGs) in the microstructure. The amount of ESGs initially decreased with increasing Zn content, but further additions of Zn led to a steady increase in the amount of ESGs. The Mg-4Zn-4Al-4RE alloy was found to have the least ESGs and the most uniform grain structure. The alloys with higher Zn and Al contents showed a more dendritic microstructure with coarse RE-containing intermetallic phases and network of a Mg-Zn-Al ternary phase. Compared with the commercial AE44 (Mg-4Al-4RE) alloy, additions of Zn reduced the amount of Al-RE phases and resulted in the formation of Al2REZn2 phase.",

keywords = "High pressure die casting, Magnesium alloys, Mg-Zn-Al-RE, Microstructure, Solidification",

author = "Wenlong Xiao and Suming Zhu and Easton, \{Mark A.\} and Dargusch, \{Matthew S.\} and Gibson, \{Mark A.\} and Nie, \{Jian Feng\}",

year = "2012",

month = mar,

doi = "10.1016/j.matchar.2012.01.001",

language = "英语",

volume = "65",

pages = "28--36",

journal = "Materials Characterization",

issn = "1044-5803",

publisher = "Elsevier Inc.",

}

TY - JOUR

T1 - Microstructural characterization of high pressure die cast Mg-Zn-Al-RE alloys

AU - Xiao, Wenlong

AU - Zhu, Suming

AU - Easton, Mark A.

AU - Dargusch, Matthew S.

AU - Gibson, Mark A.

AU - Nie, Jian Feng

PY - 2012/3

Y1 - 2012/3

N2 - Mg-(1-10)Zn-(4-6)Al-4RE alloys were prepared by high pressure die casting and their microstructures were characterized. Optical observations revealed the presence of externally solidified grains (ESGs) in the microstructure. The amount of ESGs initially decreased with increasing Zn content, but further additions of Zn led to a steady increase in the amount of ESGs. The Mg-4Zn-4Al-4RE alloy was found to have the least ESGs and the most uniform grain structure. The alloys with higher Zn and Al contents showed a more dendritic microstructure with coarse RE-containing intermetallic phases and network of a Mg-Zn-Al ternary phase. Compared with the commercial AE44 (Mg-4Al-4RE) alloy, additions of Zn reduced the amount of Al-RE phases and resulted in the formation of Al2REZn2 phase.

AB - Mg-(1-10)Zn-(4-6)Al-4RE alloys were prepared by high pressure die casting and their microstructures were characterized. Optical observations revealed the presence of externally solidified grains (ESGs) in the microstructure. The amount of ESGs initially decreased with increasing Zn content, but further additions of Zn led to a steady increase in the amount of ESGs. The Mg-4Zn-4Al-4RE alloy was found to have the least ESGs and the most uniform grain structure. The alloys with higher Zn and Al contents showed a more dendritic microstructure with coarse RE-containing intermetallic phases and network of a Mg-Zn-Al ternary phase. Compared with the commercial AE44 (Mg-4Al-4RE) alloy, additions of Zn reduced the amount of Al-RE phases and resulted in the formation of Al2REZn2 phase.

KW - High pressure die casting

KW - Magnesium alloys

KW - Mg-Zn-Al-RE

KW - Microstructure

KW - Solidification

UR - https://www.scopus.com/pages/publications/84856058525

U2 - 10.1016/j.matchar.2012.01.001

DO - 10.1016/j.matchar.2012.01.001

M3 - 文章

AN - SCOPUS:84856058525

SN - 1044-5803

VL - 65

SP - 28

EP - 36

JO - Materials Characterization

JF - Materials Characterization

ER -

Microstructural characterization of high pressure die cast Mg-Zn-Al-RE alloys

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