Effect of Ga Content on Microstructure and Degradability of Al-Mg-Ga-Sn Alloys
Zhang Jianbin; Liu Junjun; Li Qinglin
2019-12
Source PublicationRARE METAL MATERIALS AND ENGINEERING
ISSN1002-185X
Volume48Issue:12Pages:4039-4045
AbstractAl-Mg-Ga-Sn alloys with different Ga contents were prepared by electric furnace melting. The microstructure morphology and composition were characterized by optical microscopy (OM), scanning electron microscopy (SEM) and X-ray diffractometry (XRD); the degradation rates were measured in pure water at 30, 40, 70 and 90 degrees C; and the electrochemical performance at room temperature was tested using the electrochemical workstation. The results reveal that in case that Mg+Sn is 10% (mass fraction), Al-Mg-Ga-Sn alloys with 0 wt%, 4 wt%, 8 wt%, 12 wt% and 16 wt% Ga, all contain Al matrix phase and Mg2Sn phase. Moreover, Ga5Mg2 phase appears with the increase in Ga content. The degradability of Al-Mg-Ga-Sn alloys primarily presents start-up with pitting corrosion in aluminum matrix phase, and acceleration with intergranular corrosion between Mg2Sn and Ga5Mg2 compound phases. The initial degradation temperatures of alloys with different Ga contents depend on the content of low melting point elements (Ga+Sn) solved in the aluminum matrix; the alloy with the same Ga content rapidly degrades with elevating temperature, and the degradation reaction kinetics follows Arrhenius equation. Electrochemical analysis at room temperature indicates that as Ga content increases in Al-Mg-Ga-Sn alloy, the corresponding corrosion potential negatively shifts to different extents, while the corrosion current gradually improves.
Keywordaluminum alloy degradable microstructure corroded morphology
Indexed BySCI
Language中文
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000504920800037
PublisherNORTHWEST INST NONFERROUS METAL RESEARCH
Document Type期刊论文
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/64300
Collection材料科学与工程学院
省部共建有色金属先进加工与再利用国家重点实验室
Corresponding AuthorZhang Jianbin
AffiliationLanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China
First Author AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
Corresponding Author AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
First Signature AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
Recommended Citation
GB/T 7714
Zhang Jianbin,Liu Junjun,Li Qinglin. Effect of Ga Content on Microstructure and Degradability of Al-Mg-Ga-Sn Alloys[J]. RARE METAL MATERIALS AND ENGINEERING,2019,48(12):4039-4045.
APA Zhang Jianbin,Liu Junjun,&Li Qinglin.(2019).Effect of Ga Content on Microstructure and Degradability of Al-Mg-Ga-Sn Alloys.RARE METAL MATERIALS AND ENGINEERING,48(12),4039-4045.
MLA Zhang Jianbin,et al."Effect of Ga Content on Microstructure and Degradability of Al-Mg-Ga-Sn Alloys".RARE METAL MATERIALS AND ENGINEERING 48.12(2019):4039-4045.
Files in This Item:
There are no files associated with this item.
Related Services
Usage statistics
Google Scholar
Similar articles in Google Scholar
[Zhang Jianbin]'s Articles
[Liu Junjun]'s Articles
[Li Qinglin]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhang Jianbin]'s Articles
[Liu Junjun]'s Articles
[Li Qinglin]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhang Jianbin]'s Articles
[Liu Junjun]'s Articles
[Li Qinglin]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.