The Enhancement of Mg Corrosion Resistance by Alloying Mn and Laser-Melting
Mg has been considered a promising biomaterial for bone implants. However, the poor corrosion resistance has become its main undesirable property. In this study, both alloying Mn and laser-melting were applied to enhance the Mg corrosion resistance. The corrosion resistance, mechanical properties, a...
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doaj-185b7152a5494bd2b4e34dba2bc4e1172020-11-25T00:23:43ZengMDPI AGMaterials1996-19442016-03-019421610.3390/ma9040216ma9040216The Enhancement of Mg Corrosion Resistance by Alloying Mn and Laser-MeltingYouwen Yang0Ping Wu1Qiyuan Wang2Hong Wu3Yong Liu4Youwen Deng5Yuanzhuo Zhou6Cijun Shuai7State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, ChinaCollege of Chemistry, Xiangtan University, Xiangtan 411105, ChinaDepartment of Emergency Medicine, 2nd Xiangya Hospital of Central South University, Changsha 410083, ChinaState Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, ChinaState Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, ChinaDepartment of Emergency Medicine, 2nd Xiangya Hospital of Central South University, Changsha 410083, ChinaState Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, ChinaState Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, ChinaMg has been considered a promising biomaterial for bone implants. However, the poor corrosion resistance has become its main undesirable property. In this study, both alloying Mn and laser-melting were applied to enhance the Mg corrosion resistance. The corrosion resistance, mechanical properties, and microstructure of rapid laser-melted Mg-xMn (x = 0–3 wt %) alloys were investigated. The alloys were composed of dendrite grains, and the grains size decreased with increasing Mn. Moreover, Mn could dissolve and induce the crystal lattice distortion of the Mg matrix during the solidification process. Mn ranging from 0–2 wt % dissolved completely due to rapid laser solidification. As Mn contents further increased up to 3 wt %, a small amount of Mn was left undissolved. The compressive strength of Mg-Mn alloys increased first (up to 2 wt %) and then decreased with increasing Mn, while the hardness increased continuously. The refinement of grains and the increase in corrosion potential both made contributions to the enhancement of Mg corrosion resistance.http://www.mdpi.com/1996-1944/9/4/216corrosion resistanceMg-Mn alloylaser-meltingmicrostructuremechanical properties |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Youwen Yang Ping Wu Qiyuan Wang Hong Wu Yong Liu Youwen Deng Yuanzhuo Zhou Cijun Shuai |
spellingShingle |
Youwen Yang Ping Wu Qiyuan Wang Hong Wu Yong Liu Youwen Deng Yuanzhuo Zhou Cijun Shuai The Enhancement of Mg Corrosion Resistance by Alloying Mn and Laser-Melting Materials corrosion resistance Mg-Mn alloy laser-melting microstructure mechanical properties |
author_facet |
Youwen Yang Ping Wu Qiyuan Wang Hong Wu Yong Liu Youwen Deng Yuanzhuo Zhou Cijun Shuai |
author_sort |
Youwen Yang |
title |
The Enhancement of Mg Corrosion Resistance by Alloying Mn and Laser-Melting |
title_short |
The Enhancement of Mg Corrosion Resistance by Alloying Mn and Laser-Melting |
title_full |
The Enhancement of Mg Corrosion Resistance by Alloying Mn and Laser-Melting |
title_fullStr |
The Enhancement of Mg Corrosion Resistance by Alloying Mn and Laser-Melting |
title_full_unstemmed |
The Enhancement of Mg Corrosion Resistance by Alloying Mn and Laser-Melting |
title_sort |
enhancement of mg corrosion resistance by alloying mn and laser-melting |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2016-03-01 |
description |
Mg has been considered a promising biomaterial for bone implants. However, the poor corrosion resistance has become its main undesirable property. In this study, both alloying Mn and laser-melting were applied to enhance the Mg corrosion resistance. The corrosion resistance, mechanical properties, and microstructure of rapid laser-melted Mg-xMn (x = 0–3 wt %) alloys were investigated. The alloys were composed of dendrite grains, and the grains size decreased with increasing Mn. Moreover, Mn could dissolve and induce the crystal lattice distortion of the Mg matrix during the solidification process. Mn ranging from 0–2 wt % dissolved completely due to rapid laser solidification. As Mn contents further increased up to 3 wt %, a small amount of Mn was left undissolved. The compressive strength of Mg-Mn alloys increased first (up to 2 wt %) and then decreased with increasing Mn, while the hardness increased continuously. The refinement of grains and the increase in corrosion potential both made contributions to the enhancement of Mg corrosion resistance. |
topic |
corrosion resistance Mg-Mn alloy laser-melting microstructure mechanical properties |
url |
http://www.mdpi.com/1996-1944/9/4/216 |
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