Effect of Mn content on the microstructure and corrosion resistance of Al-Cu-Mg-Mn alloys

doi:10.1016/j.jallcom.2021.162903

	Effect of Mn content on the microstructure and corrosion resistance of Al-Cu-Mg-Mn alloys
	Fu, Junwei 1,2; Cui, Kai 3
	2022-03-10
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	896 页码:10
通讯作者	Fu, Junwei(hitfujw@163.com)
摘要	Effect of Mn content on the microstructure and corrosion resistance of Al-Cu-Mg-Mn alloys was examined by optical microscope (OM), scanning electron microscope (SEM), tensile tests, pitting corrosion and electrochemical tests. It is shown that increase of Mn content can accelerate the aging process of the Al-CuMg-Mn alloys, which is beneficial to shorten heat treatment time. Polarization curves indicate that the corrosion current density and corrosion rate of Al-4Cu-2Mg-1.2Mn alloy are the lowest compared with Al4Cu-2Mg-0.6Mn and Al-4Cu-2Mg-0.9Mn alloys for both the as-cast and heat-treated conditions. Electrochemical impedance spectroscopy (EIS) tests also demonstrate that Al-4Cu-2Mg-1.2Mn alloy displays the highest resistance. The maximum pitting corrosion depth of the as-aged Al-4Cu-2Mg-1.2Mn and Al-4Cu-2Mg-0.6Mn alloys is about 65 mu m and 110 mu m, respectively. Therefore, Mn addition can improve the mechanical properties and corrosion resistance of the Al-Cu-Mg alloys. (c) 2021 Elsevier B.V. All rights reserved.
关键词	Al-Cu-Mg-Mn alloy Aging treatment Corrosion resistance Potentiodynamic polarization Electrochemical impedance spectroscopy
DOI	10.1016/j.jallcom.2021.162903
收录类别	SCI
语种	英语
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000750037200002
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：20[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/178168
专题	海洋环境腐蚀与生物污损重点实验室
通讯作者	Fu, Junwei
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China 2.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Marine Corros & Protect, Qingdao 266237, Peoples R China 3.Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Fu, Junwei,Cui, Kai. Effect of Mn content on the microstructure and corrosion resistance of Al-Cu-Mg-Mn alloys[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,896:10.
APA	Fu, Junwei,&Cui, Kai.(2022).Effect of Mn content on the microstructure and corrosion resistance of Al-Cu-Mg-Mn alloys.JOURNAL OF ALLOYS AND COMPOUNDS,896,10.
MLA	Fu, Junwei,et al."Effect of Mn content on the microstructure and corrosion resistance of Al-Cu-Mg-Mn alloys".JOURNAL OF ALLOYS AND COMPOUNDS 896(2022):10.

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