Effects of Zn on Microstructure and Mechanical Properties of As-cast Mg-Y-Nd-Zr Alloys
Effects of Zn on microstructure and mechanical properties of Mg-Y-Nd-Zr as-cast alloys were investigated by the optical microscopy(OM), scanning electron microscopy(SEM), X-ray diffractometry(XRD) and the mechanical properties test. The results show that the grain size of Mg-Y-Nd-Zr-<i>x</i...
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Journal of Materials Engineering
2017-09-01
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Series: | Cailiao gongcheng |
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Online Access: | http://jme.biam.ac.cn/CN/Y2017/V45/I9/116 |
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author | SU Zai-jun YANG Shu-zhong LIU Chu-ming YANG Xin-hua LIU Xian-lan |
author_facet | SU Zai-jun YANG Shu-zhong LIU Chu-ming YANG Xin-hua LIU Xian-lan |
author_sort | SU Zai-jun |
collection | DOAJ |
description | Effects of Zn on microstructure and mechanical properties of Mg-Y-Nd-Zr as-cast alloys were investigated by the optical microscopy(OM), scanning electron microscopy(SEM), X-ray diffractometry(XRD) and the mechanical properties test. The results show that the grain size of Mg-Y-Nd-Zr-<i>x</i>Zn(<i>x</i>=0.0%, 0.5%, 1.0%, 1.5%,mass fraction)alloys is greatly refined with the increase of Zn content, which is refined from (57±0.8)μm to (30±0.3)μm. The volume fraction of eutectic structure at grain boundary increases gradually. Mg<sub>12</sub>Nd phase and Mg<sub>24</sub>Y<sub>5</sub> phase exist mainly in Mg-Y-Nd-Zr as-cast alloy. With the addition of 0.5%Zn, Mg<sub>12</sub>YZn phase appears at the grain boundary. With the increase of Zn, the volume fraction of Mg<sub>12</sub>YZn phase and the mechanical properties of the alloys increases gradually. The alloy containing 1.0%Zn exhibits the optimal mechanical properties, the ultimate tensile strength, yield strength and elongation are (208±5.9), (159±3.9)MPa and (7.5±0.2)%, respectively; comparing with the alloy without the addition of Zn, the ultimate tensile strength, yield strength and elongation increase by 18, 42MPa and 1.2%. |
first_indexed | 2024-04-11T02:29:03Z |
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id | doaj.art-55af4ebc8dcb46ac81a7d9848c8c9802 |
institution | Directory Open Access Journal |
issn | 1001-4381 1001-4381 |
language | zho |
last_indexed | 2024-04-11T02:29:03Z |
publishDate | 2017-09-01 |
publisher | Journal of Materials Engineering |
record_format | Article |
series | Cailiao gongcheng |
spelling | doaj.art-55af4ebc8dcb46ac81a7d9848c8c98022023-01-02T21:46:48ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43811001-43812017-09-0145911612210.11868/j.issn.1001-4381.2015.000649201709000649Effects of Zn on Microstructure and Mechanical Properties of As-cast Mg-Y-Nd-Zr AlloysSU Zai-jun0YANG Shu-zhong1LIU Chu-ming2YANG Xin-hua3LIU Xian-lan4Department of Mechanical and Energy Engineering, Shaoyang University, Shaoyang 422000, Hunan, ChinaSchool of Materials Science and Engineering, Central South University, Changsha 410083, ChinaSchool of Materials Science and Engineering, Central South University, Changsha 410083, ChinaSchool of Materials Science and Engineering, Central South University, Changsha 410083, ChinaDepartment of Mechanical Engineering, Hunan Institute of Technology, Hengyang 421002, Hunan, ChinaEffects of Zn on microstructure and mechanical properties of Mg-Y-Nd-Zr as-cast alloys were investigated by the optical microscopy(OM), scanning electron microscopy(SEM), X-ray diffractometry(XRD) and the mechanical properties test. The results show that the grain size of Mg-Y-Nd-Zr-<i>x</i>Zn(<i>x</i>=0.0%, 0.5%, 1.0%, 1.5%,mass fraction)alloys is greatly refined with the increase of Zn content, which is refined from (57±0.8)μm to (30±0.3)μm. The volume fraction of eutectic structure at grain boundary increases gradually. Mg<sub>12</sub>Nd phase and Mg<sub>24</sub>Y<sub>5</sub> phase exist mainly in Mg-Y-Nd-Zr as-cast alloy. With the addition of 0.5%Zn, Mg<sub>12</sub>YZn phase appears at the grain boundary. With the increase of Zn, the volume fraction of Mg<sub>12</sub>YZn phase and the mechanical properties of the alloys increases gradually. The alloy containing 1.0%Zn exhibits the optimal mechanical properties, the ultimate tensile strength, yield strength and elongation are (208±5.9), (159±3.9)MPa and (7.5±0.2)%, respectively; comparing with the alloy without the addition of Zn, the ultimate tensile strength, yield strength and elongation increase by 18, 42MPa and 1.2%.http://jme.biam.ac.cn/CN/Y2017/V45/I9/116Mg-Y-Nd-Zr alloyZnmicrostructuremechanical property |
spellingShingle | SU Zai-jun YANG Shu-zhong LIU Chu-ming YANG Xin-hua LIU Xian-lan Effects of Zn on Microstructure and Mechanical Properties of As-cast Mg-Y-Nd-Zr Alloys Cailiao gongcheng Mg-Y-Nd-Zr alloy Zn microstructure mechanical property |
title | Effects of Zn on Microstructure and Mechanical Properties of As-cast Mg-Y-Nd-Zr Alloys |
title_full | Effects of Zn on Microstructure and Mechanical Properties of As-cast Mg-Y-Nd-Zr Alloys |
title_fullStr | Effects of Zn on Microstructure and Mechanical Properties of As-cast Mg-Y-Nd-Zr Alloys |
title_full_unstemmed | Effects of Zn on Microstructure and Mechanical Properties of As-cast Mg-Y-Nd-Zr Alloys |
title_short | Effects of Zn on Microstructure and Mechanical Properties of As-cast Mg-Y-Nd-Zr Alloys |
title_sort | effects of zn on microstructure and mechanical properties of as cast mg y nd zr alloys |
topic | Mg-Y-Nd-Zr alloy Zn microstructure mechanical property |
url | http://jme.biam.ac.cn/CN/Y2017/V45/I9/116 |
work_keys_str_mv | AT suzaijun effectsofznonmicrostructureandmechanicalpropertiesofascastmgyndzralloys AT yangshuzhong effectsofznonmicrostructureandmechanicalpropertiesofascastmgyndzralloys AT liuchuming effectsofznonmicrostructureandmechanicalpropertiesofascastmgyndzralloys AT yangxinhua effectsofznonmicrostructureandmechanicalpropertiesofascastmgyndzralloys AT liuxianlan effectsofznonmicrostructureandmechanicalpropertiesofascastmgyndzralloys |