Modifying microstructures and tensile properties of Mg-Sm based alloy via extrusion ratio
Microstructure and tensile properties of a Mg-Sm-Zn-Zr alloy with various extrusion ratios (ERs) of 6.9, 10.4 and 17.6 were systematically investigated. It was identified that, greater ER increased dynamic recrystallization (DRX) fraction and coarsened DRX grains, which further suggests weakened bas...
Main Authors: | , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
KeAi Communications Co., Ltd.
2021-05-01
|
Series: | Journal of Magnesium and Alloys |
Subjects: | |
Online Access: | http://www.sciencedirect.com/science/article/pii/S2213956721000141 |
id |
doaj-a1cf9d71577c4bbf8704465fdb8e910c |
---|---|
record_format |
Article |
spelling |
doaj-a1cf9d71577c4bbf8704465fdb8e910c2021-07-03T04:46:01ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672021-05-019310981109Modifying microstructures and tensile properties of Mg-Sm based alloy via extrusion ratioKai Guan0Rui Ma1Jinghuai Zhang2Ruizhi Wu3Qiang Yang4Jian Meng5Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China; Department of Materials Engineering, The University of Tokyo, Tokyo 113-8656, Japan; State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR ChinaState Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR ChinaKey Laboratory of Superlight Material and Surface Technology, Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China; Corresponding authors.Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR ChinaState Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China; Corresponding authors.State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR ChinaMicrostructure and tensile properties of a Mg-Sm-Zn-Zr alloy with various extrusion ratios (ERs) of 6.9, 10.4 and 17.6 were systematically investigated. It was identified that, greater ER increased dynamic recrystallization (DRX) fraction and coarsened DRX grains, which further suggests weakened basal fiber texture for the studied alloy. This is mainly due to the rising temperature from massive deformation heat when hot-extrusion. As a result, greater ER corresponds to a decreased strength but improved ductility. Finally, transmission electron microscopy (TEM) observations reveal that the dominant intermetallic phase, Mg3Sm, is metastable, and it will transform into Mg41Sm5 during extrusion with high-ER. This transformation leads to the accumulation of surplus Sm and Zn atoms, which induces the precipitation of SmZn3 phase at the surface of Mg41Sm5 matrix.http://www.sciencedirect.com/science/article/pii/S2213956721000141Magnesium alloysExtrusion ratioMicrostructurePhase transitionTransmission electron microscopyTensile properties |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Kai Guan Rui Ma Jinghuai Zhang Ruizhi Wu Qiang Yang Jian Meng |
spellingShingle |
Kai Guan Rui Ma Jinghuai Zhang Ruizhi Wu Qiang Yang Jian Meng Modifying microstructures and tensile properties of Mg-Sm based alloy via extrusion ratio Journal of Magnesium and Alloys Magnesium alloys Extrusion ratio Microstructure Phase transition Transmission electron microscopy Tensile properties |
author_facet |
Kai Guan Rui Ma Jinghuai Zhang Ruizhi Wu Qiang Yang Jian Meng |
author_sort |
Kai Guan |
title |
Modifying microstructures and tensile properties of Mg-Sm based alloy via extrusion ratio |
title_short |
Modifying microstructures and tensile properties of Mg-Sm based alloy via extrusion ratio |
title_full |
Modifying microstructures and tensile properties of Mg-Sm based alloy via extrusion ratio |
title_fullStr |
Modifying microstructures and tensile properties of Mg-Sm based alloy via extrusion ratio |
title_full_unstemmed |
Modifying microstructures and tensile properties of Mg-Sm based alloy via extrusion ratio |
title_sort |
modifying microstructures and tensile properties of mg-sm based alloy via extrusion ratio |
publisher |
KeAi Communications Co., Ltd. |
series |
Journal of Magnesium and Alloys |
issn |
2213-9567 |
publishDate |
2021-05-01 |
description |
Microstructure and tensile properties of a Mg-Sm-Zn-Zr alloy with various extrusion ratios (ERs) of 6.9, 10.4 and 17.6 were systematically investigated. It was identified that, greater ER increased dynamic recrystallization (DRX) fraction and coarsened DRX grains, which further suggests weakened basal fiber texture for the studied alloy. This is mainly due to the rising temperature from massive deformation heat when hot-extrusion. As a result, greater ER corresponds to a decreased strength but improved ductility. Finally, transmission electron microscopy (TEM) observations reveal that the dominant intermetallic phase, Mg3Sm, is metastable, and it will transform into Mg41Sm5 during extrusion with high-ER. This transformation leads to the accumulation of surplus Sm and Zn atoms, which induces the precipitation of SmZn3 phase at the surface of Mg41Sm5 matrix. |
topic |
Magnesium alloys Extrusion ratio Microstructure Phase transition Transmission electron microscopy Tensile properties |
url |
http://www.sciencedirect.com/science/article/pii/S2213956721000141 |
work_keys_str_mv |
AT kaiguan modifyingmicrostructuresandtensilepropertiesofmgsmbasedalloyviaextrusionratio AT ruima modifyingmicrostructuresandtensilepropertiesofmgsmbasedalloyviaextrusionratio AT jinghuaizhang modifyingmicrostructuresandtensilepropertiesofmgsmbasedalloyviaextrusionratio AT ruizhiwu modifyingmicrostructuresandtensilepropertiesofmgsmbasedalloyviaextrusionratio AT qiangyang modifyingmicrostructuresandtensilepropertiesofmgsmbasedalloyviaextrusionratio AT jianmeng modifyingmicrostructuresandtensilepropertiesofmgsmbasedalloyviaextrusionratio |
_version_ |
1721321206418767872 |