Effect of Gd addition on the age hardening response of Mg–6Zn-1Mn alloy
The effect of Gd addition on the microstructure and mechanical properties of as-aged Mg–6Zn-1Mn (ZM61) alloy were investigated. The results showed that coarse second phase particles containing both Zn and Gd elements were detected after the addition of Gd element, leading to reduce the amount of Zn...
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doaj-789f1b563f0d41489483c285ad4814332020-11-25T03:10:53ZengElsevierJournal of Materials Research and Technology2238-78542020-07-019488348841Effect of Gd addition on the age hardening response of Mg–6Zn-1Mn alloyYang Zhao0Dingfei Zhang1Jingkai Feng2Xia Chen3Tianyu Deng4Bin Jiang5Fusheng Pan6College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China; National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400044, ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing 400044, China; National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400044, China; Corresponding author.College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China; National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400044, ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing 400044, China; National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400044, ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing 400044, China; National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400044, ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing 400044, China; National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400044, ChinaNational Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400044, China; Chongqing Academy of Science and Technology, Chongqing 401123, ChinaThe effect of Gd addition on the microstructure and mechanical properties of as-aged Mg–6Zn-1Mn (ZM61) alloy were investigated. The results showed that coarse second phase particles containing both Zn and Gd elements were detected after the addition of Gd element, leading to reduce the amount of Zn available as solutes in the α-Mg matrix. Compared with ZM61, the peak aging hardness had a little difference and the peak aging time was shortened with micro amount of Gd addition, while the hardness decreased significantly for the alloys with high Gd addition. The age hardening response was mainly dictated to the precipitation of fine rod-like β1′ phase, and the number density of β1′ phase was related to the Zn content in the α-Mg matrix. Aging treatment could effectively improve the strength of alloys with minor Gd addition and it was of little significance for alloys with high Gd content. The as-aged ZMG61-0.2 exhibited optimal mechanical properties, and the yield tensile strength, ultimate tensile strength, elongation were 360 MPa, 390 MPa, 8.3%, respectively.http://www.sciencedirect.com/science/article/pii/S2238785420313909Mg-Zn-Mn-Gd alloyMicro alloyingPrecipitation hardeningMechanical properties |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yang Zhao Dingfei Zhang Jingkai Feng Xia Chen Tianyu Deng Bin Jiang Fusheng Pan |
spellingShingle |
Yang Zhao Dingfei Zhang Jingkai Feng Xia Chen Tianyu Deng Bin Jiang Fusheng Pan Effect of Gd addition on the age hardening response of Mg–6Zn-1Mn alloy Journal of Materials Research and Technology Mg-Zn-Mn-Gd alloy Micro alloying Precipitation hardening Mechanical properties |
author_facet |
Yang Zhao Dingfei Zhang Jingkai Feng Xia Chen Tianyu Deng Bin Jiang Fusheng Pan |
author_sort |
Yang Zhao |
title |
Effect of Gd addition on the age hardening response of Mg–6Zn-1Mn alloy |
title_short |
Effect of Gd addition on the age hardening response of Mg–6Zn-1Mn alloy |
title_full |
Effect of Gd addition on the age hardening response of Mg–6Zn-1Mn alloy |
title_fullStr |
Effect of Gd addition on the age hardening response of Mg–6Zn-1Mn alloy |
title_full_unstemmed |
Effect of Gd addition on the age hardening response of Mg–6Zn-1Mn alloy |
title_sort |
effect of gd addition on the age hardening response of mg–6zn-1mn alloy |
publisher |
Elsevier |
series |
Journal of Materials Research and Technology |
issn |
2238-7854 |
publishDate |
2020-07-01 |
description |
The effect of Gd addition on the microstructure and mechanical properties of as-aged Mg–6Zn-1Mn (ZM61) alloy were investigated. The results showed that coarse second phase particles containing both Zn and Gd elements were detected after the addition of Gd element, leading to reduce the amount of Zn available as solutes in the α-Mg matrix. Compared with ZM61, the peak aging hardness had a little difference and the peak aging time was shortened with micro amount of Gd addition, while the hardness decreased significantly for the alloys with high Gd addition. The age hardening response was mainly dictated to the precipitation of fine rod-like β1′ phase, and the number density of β1′ phase was related to the Zn content in the α-Mg matrix. Aging treatment could effectively improve the strength of alloys with minor Gd addition and it was of little significance for alloys with high Gd content. The as-aged ZMG61-0.2 exhibited optimal mechanical properties, and the yield tensile strength, ultimate tensile strength, elongation were 360 MPa, 390 MPa, 8.3%, respectively. |
topic |
Mg-Zn-Mn-Gd alloy Micro alloying Precipitation hardening Mechanical properties |
url |
http://www.sciencedirect.com/science/article/pii/S2238785420313909 |
work_keys_str_mv |
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