The microstructures and mechanical properties of cast Mg-Zn-Al-RE alloys

Wenlong Xiao; Shusheng Jia; Lidong Wang; Yaoming Wu; Limin Wang

doi:10.1016/j.jallcom.2009.02.087

The microstructures and mechanical properties of cast Mg-Zn-Al-RE alloys

Wenlong Xiao
, Shusheng Jia
, Lidong Wang^*
, Yaoming Wu
, Limin Wang^*

^*Corresponding author for this work

Key Laboratory of Precision Opto-Mechatronics Technology (Ministry of Education)
CAS - Changchun Institute of Applied Chemistry

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

35 Scopus citations

Abstract

The microstructures and mechanical properties of cast Mg-Zn-Al-RE alloys with 4 wt.% RE and variable Zn and Al contents were investigated. The results show that the alloys mainly consist of α-Mg, Al₂REZn₂, Al₄RE and τ-Mg₃₂(Al,Zn)₄₉ phases, and a little amount of the β-Mg₁₇Al₁₂ phase will also be formed with certain Zn and Al contents. When increasing the Zn or Al content, the distribution of the Al₂REZn₂ and Al₄RE phases will be changed from cluster to dispersed, and the content of τ-Mg₃₂(Al,Zn)₄₉ phase increased gradually. The distribution of the Al₂REZn₂ and Al₄RE phases, and the content of β- or τ-phase are critical to the mechanical properties of Mg-Zn-Al-RE alloys. The Mg-6Zn-5Al-4RE alloy with cluster Al₂REZn₂ phase and low content of β-phase, exhibits the optimal mechanical properties, and the ultimate tensile strength, yield strength and elongation are 242 MPa, 140 MPa and 6.4% at room temperature, respectively.

Original language	English
Pages (from-to)	L33-L36
Journal	Journal of Alloys and Compounds
Volume	480
Issue number	2
DOIs	https://doi.org/10.1016/j.jallcom.2009.02.087
State	Published - 8 Jul 2009
Externally published	Yes

Keywords

Mechanical properties
Mg-Zn-Al-RE alloys
Microstructures
Phase transformation
Strengthening

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10.1016/j.jallcom.2009.02.087

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@article{a6f01f27ebfc42bd81f868c162e016d8,

title = "The microstructures and mechanical properties of cast Mg-Zn-Al-RE alloys",

abstract = "The microstructures and mechanical properties of cast Mg-Zn-Al-RE alloys with 4 wt.\% RE and variable Zn and Al contents were investigated. The results show that the alloys mainly consist of α-Mg, Al2REZn2, Al4RE and τ-Mg32(Al,Zn)49 phases, and a little amount of the β-Mg17Al12 phase will also be formed with certain Zn and Al contents. When increasing the Zn or Al content, the distribution of the Al2REZn2 and Al4RE phases will be changed from cluster to dispersed, and the content of τ-Mg32(Al,Zn)49 phase increased gradually. The distribution of the Al2REZn2 and Al4RE phases, and the content of β- or τ-phase are critical to the mechanical properties of Mg-Zn-Al-RE alloys. The Mg-6Zn-5Al-4RE alloy with cluster Al2REZn2 phase and low content of β-phase, exhibits the optimal mechanical properties, and the ultimate tensile strength, yield strength and elongation are 242 MPa, 140 MPa and 6.4\% at room temperature, respectively.",

keywords = "Mechanical properties, Mg-Zn-Al-RE alloys, Microstructures, Phase transformation, Strengthening",

author = "Wenlong Xiao and Shusheng Jia and Lidong Wang and Yaoming Wu and Limin Wang",

year = "2009",

month = jul,

day = "8",

doi = "10.1016/j.jallcom.2009.02.087",

language = "英语",

volume = "480",

pages = "L33--L36",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

number = "2",

}

TY - JOUR

T1 - The microstructures and mechanical properties of cast Mg-Zn-Al-RE alloys

AU - Xiao, Wenlong

AU - Jia, Shusheng

AU - Wang, Lidong

AU - Wu, Yaoming

AU - Wang, Limin

PY - 2009/7/8

Y1 - 2009/7/8

N2 - The microstructures and mechanical properties of cast Mg-Zn-Al-RE alloys with 4 wt.% RE and variable Zn and Al contents were investigated. The results show that the alloys mainly consist of α-Mg, Al2REZn2, Al4RE and τ-Mg32(Al,Zn)49 phases, and a little amount of the β-Mg17Al12 phase will also be formed with certain Zn and Al contents. When increasing the Zn or Al content, the distribution of the Al2REZn2 and Al4RE phases will be changed from cluster to dispersed, and the content of τ-Mg32(Al,Zn)49 phase increased gradually. The distribution of the Al2REZn2 and Al4RE phases, and the content of β- or τ-phase are critical to the mechanical properties of Mg-Zn-Al-RE alloys. The Mg-6Zn-5Al-4RE alloy with cluster Al2REZn2 phase and low content of β-phase, exhibits the optimal mechanical properties, and the ultimate tensile strength, yield strength and elongation are 242 MPa, 140 MPa and 6.4% at room temperature, respectively.

AB - The microstructures and mechanical properties of cast Mg-Zn-Al-RE alloys with 4 wt.% RE and variable Zn and Al contents were investigated. The results show that the alloys mainly consist of α-Mg, Al2REZn2, Al4RE and τ-Mg32(Al,Zn)49 phases, and a little amount of the β-Mg17Al12 phase will also be formed with certain Zn and Al contents. When increasing the Zn or Al content, the distribution of the Al2REZn2 and Al4RE phases will be changed from cluster to dispersed, and the content of τ-Mg32(Al,Zn)49 phase increased gradually. The distribution of the Al2REZn2 and Al4RE phases, and the content of β- or τ-phase are critical to the mechanical properties of Mg-Zn-Al-RE alloys. The Mg-6Zn-5Al-4RE alloy with cluster Al2REZn2 phase and low content of β-phase, exhibits the optimal mechanical properties, and the ultimate tensile strength, yield strength and elongation are 242 MPa, 140 MPa and 6.4% at room temperature, respectively.

KW - Mechanical properties

KW - Mg-Zn-Al-RE alloys

KW - Microstructures

KW - Phase transformation

KW - Strengthening

UR - https://www.scopus.com/pages/publications/67349117749

U2 - 10.1016/j.jallcom.2009.02.087

DO - 10.1016/j.jallcom.2009.02.087

M3 - 快报

AN - SCOPUS:67349117749

SN - 0925-8388

VL - 480

SP - L33-L36

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 2

ER -

The microstructures and mechanical properties of cast Mg-Zn-Al-RE alloys

Abstract

Keywords

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