Research on the microstructure and properties of a multi-pass friction stir processed 6061Al coating for AZ31 Mg alloy

Research on the microstructure and properties of a multi-pass friction stir processed 6061Al coating for AZ31 Mg alloy

A 6061 Al coating for AZ31 Mg alloy was prepared by multi-pass friction stir welding (FSW) with different travel speeds. The microstructure, mechanical properties of the interfacial region and the corrosion behavior of the coating were investigated systematically. The results indicate that the inter...

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Main Authors: Xiaoming Xiong, Yan Yang, Jinguang Li, Minmin Li, Jian Peng, Chen Wen, Xiaodong Peng
Format: Article
Language:English
Published: KeAi Communications Co., Ltd. 2019-12-01
Series:Journal of Magnesium and Alloys
Online Access:http://www.sciencedirect.com/science/article/pii/S2213956719300751
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spelling doaj-b70ff848e6044f679820422f4c3bdc142021-04-02T12:24:58ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672019-12-0174696706Research on the microstructure and properties of a multi-pass friction stir processed 6061Al coating for AZ31 Mg alloyXiaoming Xiong0Yan Yang1Jinguang Li2Minmin Li3Jian Peng4Chen Wen5Xiaodong Peng6College of Materials Science and Engineering, 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 at: College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China.College of Materials Science and Engineering, Chongqing University, Chongqing 400044, ChinaCollege of Materials Science and Engineering, 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, ChinaBeijing Spacecrafts, Beijing 100090, ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing 400044, China; National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400044, ChinaA 6061 Al coating for AZ31 Mg alloy was prepared by multi-pass friction stir welding (FSW) with different travel speeds. The microstructure, mechanical properties of the interfacial region and the corrosion behavior of the coating were investigated systematically. The results indicate that the interfacial intermetallic compounds formed in the stir zone (SZ) consist of mainly Al12Mg17 and Al3Mg2. The intermetallic compounds in the SZ are significantly increased when the travel speed is increased from 30 mm/min to 60 mm/min. Microhardness measurements and results of shear-tensile tests show that the mechanical properties are influenced by the intermetallic compounds formed in the SZ during FSW. Corrosion tests indicate that the 6061 Al coating can significantly improve the corrosion resistance of AZ31 plate. The 6061 Al coating obtained with a travel speed of 30 mm/min has a maximum corrosion potential Ecorr of -0.503 VVSE. Keywords: AZ31 alloy, 6061Al alloy, FSW, Microstructure, Properties, Corrosionhttp://www.sciencedirect.com/science/article/pii/S2213956719300751
collection DOAJ
language English
format Article
sources DOAJ
author Xiaoming Xiong
Yan Yang
Jinguang Li
Minmin Li
Jian Peng
Chen Wen
Xiaodong Peng
spellingShingle Xiaoming Xiong
Yan Yang
Jinguang Li
Minmin Li
Jian Peng
Chen Wen
Xiaodong Peng
Research on the microstructure and properties of a multi-pass friction stir processed 6061Al coating for AZ31 Mg alloy
Journal of Magnesium and Alloys
author_facet Xiaoming Xiong
Yan Yang
Jinguang Li
Minmin Li
Jian Peng
Chen Wen
Xiaodong Peng
author_sort Xiaoming Xiong
title Research on the microstructure and properties of a multi-pass friction stir processed 6061Al coating for AZ31 Mg alloy
title_short Research on the microstructure and properties of a multi-pass friction stir processed 6061Al coating for AZ31 Mg alloy
title_full Research on the microstructure and properties of a multi-pass friction stir processed 6061Al coating for AZ31 Mg alloy
title_fullStr Research on the microstructure and properties of a multi-pass friction stir processed 6061Al coating for AZ31 Mg alloy
title_full_unstemmed Research on the microstructure and properties of a multi-pass friction stir processed 6061Al coating for AZ31 Mg alloy
title_sort research on the microstructure and properties of a multi-pass friction stir processed 6061al coating for az31 mg alloy
publisher KeAi Communications Co., Ltd.
series Journal of Magnesium and Alloys
issn 2213-9567
publishDate 2019-12-01
description A 6061 Al coating for AZ31 Mg alloy was prepared by multi-pass friction stir welding (FSW) with different travel speeds. The microstructure, mechanical properties of the interfacial region and the corrosion behavior of the coating were investigated systematically. The results indicate that the interfacial intermetallic compounds formed in the stir zone (SZ) consist of mainly Al12Mg17 and Al3Mg2. The intermetallic compounds in the SZ are significantly increased when the travel speed is increased from 30 mm/min to 60 mm/min. Microhardness measurements and results of shear-tensile tests show that the mechanical properties are influenced by the intermetallic compounds formed in the SZ during FSW. Corrosion tests indicate that the 6061 Al coating can significantly improve the corrosion resistance of AZ31 plate. The 6061 Al coating obtained with a travel speed of 30 mm/min has a maximum corrosion potential Ecorr of -0.503 VVSE. Keywords: AZ31 alloy, 6061Al alloy, FSW, Microstructure, Properties, Corrosion
url http://www.sciencedirect.com/science/article/pii/S2213956719300751
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