Microstructure and mechanical properties of Mg-(6,9)RY-4Zn alloys by extrusion and aging

Zhe Leng; Jinghuai Zhang; Tianlong Zhu; Ruizhi Wu; Milin Zhang; Shujuan Liu; Jianfeng Sun; Li Zhang

doi:10.1016/j.matdes.2013.06.007

Microstructure and mechanical properties of Mg-(6,9)RY-4Zn alloys by extrusion and aging

Zhe Leng
, Jinghuai Zhang^*
, Tianlong Zhu
, Ruizhi Wu
, Milin Zhang
, Shujuan Liu
, Jianfeng Sun
, Li Zhang

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Engineering University

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

24 Scopus citations

Abstract

The microstructure and mechanical properties of Mg-(6,9)RY-4Zn alloys (RY: Y-rich misch metal) prepared by extrusion and aging treatment have been investigated. The results demonstrate that the alloys in the as-extruded state and peak-aged state share some similar characteristics, i.e. strip-like 14H long period stacking ordered (LPSO) phase and fine dynamic recrystallization (DRX) grains with 14H LPSO lamellae, while additional basal plane stacking faults (SFs) are formed in the DRX grains of the peak-aged alloys. The peak-aged Mg-9RY-4Zn alloy exhibits optimal comprehensive mechanical properties: the microhardness is 109Hv at room temperature (RT); the ultimate tensile strength (σ), yield strength (σ_0.2) and elongation (ε) are 285MPa, 376MPa, 8.6% at RT and 243MPa, 316MPa, 16.3% at 250°C, respectively. The high mechanical properties are mainly attributed to the fine grains, thermal stable LPSO phase and profuse SFs.

Original language	English
Pages (from-to)	713-719
Number of pages	7
Journal	Materials and Design
Volume	52
DOIs	https://doi.org/10.1016/j.matdes.2013.06.007
State	Published - Dec 2013

Keywords

Aging
Long period stacking ordered structure
Magnesium alloys
Mechanical properties
Microstructure

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10.1016/j.matdes.2013.06.007

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@article{1d481f759a5b4fee8e037cc155aff366,

title = "Microstructure and mechanical properties of Mg-(6,9)RY-4Zn alloys by extrusion and aging",

abstract = "The microstructure and mechanical properties of Mg-(6,9)RY-4Zn alloys (RY: Y-rich misch metal) prepared by extrusion and aging treatment have been investigated. The results demonstrate that the alloys in the as-extruded state and peak-aged state share some similar characteristics, i.e. strip-like 14H long period stacking ordered (LPSO) phase and fine dynamic recrystallization (DRX) grains with 14H LPSO lamellae, while additional basal plane stacking faults (SFs) are formed in the DRX grains of the peak-aged alloys. The peak-aged Mg-9RY-4Zn alloy exhibits optimal comprehensive mechanical properties: the microhardness is 109Hv at room temperature (RT); the ultimate tensile strength (σ), yield strength (σ0.2) and elongation (ε) are 285MPa, 376MPa, 8.6\% at RT and 243MPa, 316MPa, 16.3\% at 250°C, respectively. The high mechanical properties are mainly attributed to the fine grains, thermal stable LPSO phase and profuse SFs.",

keywords = "Aging, Long period stacking ordered structure, Magnesium alloys, Mechanical properties, Microstructure",

author = "Zhe Leng and Jinghuai Zhang and Tianlong Zhu and Ruizhi Wu and Milin Zhang and Shujuan Liu and Jianfeng Sun and Li Zhang",

year = "2013",

month = dec,

doi = "10.1016/j.matdes.2013.06.007",

language = "英语",

volume = "52",

pages = "713--719",

journal = "Materials and Design",

issn = "0264-1275",

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TY - JOUR

T1 - Microstructure and mechanical properties of Mg-(6,9)RY-4Zn alloys by extrusion and aging

AU - Leng, Zhe

AU - Zhang, Jinghuai

AU - Zhu, Tianlong

AU - Wu, Ruizhi

AU - Zhang, Milin

AU - Liu, Shujuan

AU - Sun, Jianfeng

AU - Zhang, Li

PY - 2013/12

Y1 - 2013/12

N2 - The microstructure and mechanical properties of Mg-(6,9)RY-4Zn alloys (RY: Y-rich misch metal) prepared by extrusion and aging treatment have been investigated. The results demonstrate that the alloys in the as-extruded state and peak-aged state share some similar characteristics, i.e. strip-like 14H long period stacking ordered (LPSO) phase and fine dynamic recrystallization (DRX) grains with 14H LPSO lamellae, while additional basal plane stacking faults (SFs) are formed in the DRX grains of the peak-aged alloys. The peak-aged Mg-9RY-4Zn alloy exhibits optimal comprehensive mechanical properties: the microhardness is 109Hv at room temperature (RT); the ultimate tensile strength (σ), yield strength (σ0.2) and elongation (ε) are 285MPa, 376MPa, 8.6% at RT and 243MPa, 316MPa, 16.3% at 250°C, respectively. The high mechanical properties are mainly attributed to the fine grains, thermal stable LPSO phase and profuse SFs.

AB - The microstructure and mechanical properties of Mg-(6,9)RY-4Zn alloys (RY: Y-rich misch metal) prepared by extrusion and aging treatment have been investigated. The results demonstrate that the alloys in the as-extruded state and peak-aged state share some similar characteristics, i.e. strip-like 14H long period stacking ordered (LPSO) phase and fine dynamic recrystallization (DRX) grains with 14H LPSO lamellae, while additional basal plane stacking faults (SFs) are formed in the DRX grains of the peak-aged alloys. The peak-aged Mg-9RY-4Zn alloy exhibits optimal comprehensive mechanical properties: the microhardness is 109Hv at room temperature (RT); the ultimate tensile strength (σ), yield strength (σ0.2) and elongation (ε) are 285MPa, 376MPa, 8.6% at RT and 243MPa, 316MPa, 16.3% at 250°C, respectively. The high mechanical properties are mainly attributed to the fine grains, thermal stable LPSO phase and profuse SFs.

KW - Aging

KW - Long period stacking ordered structure

KW - Magnesium alloys

KW - Mechanical properties

KW - Microstructure

UR - https://www.scopus.com/pages/publications/84880102293

U2 - 10.1016/j.matdes.2013.06.007

DO - 10.1016/j.matdes.2013.06.007

M3 - 文章

AN - SCOPUS:84880102293

SN - 0264-1275

VL - 52

SP - 713

EP - 719

JO - Materials and Design

JF - Materials and Design

ER -

Microstructure and mechanical properties of Mg-(6,9)RY-4Zn alloys by extrusion and aging

Abstract

Keywords

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