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The influence of hot forming on the microstructure and corrosion behaviour of AZ31B magnesium alloys

Juliawati, Alias and Nurul Shuhada, Mohamed and M., Ishak and Zhou, Xiorong and Thompson, G. E. (2018) The influence of hot forming on the microstructure and corrosion behaviour of AZ31B magnesium alloys. Indonesian Journal of Science & Technology, 3 (2). pp. 68-75. ISSN 2527-8045

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Abstract

The influence of the hot forming process of AZ31B wrought and twin roll cast (TRC) magnesium alloy sheets on the microstructure and corrosion behaviour have been evaluated. The corrosion behaviour was investigated by hydrogen evolution experiments in chloride-containing solution. Filiform-like corrosion was predominant attack to the AZ31 magnesium alloys, as observed by in-situ corrosion observation. The intermetallic particle existence and grain structure significantly influenced the corrosion rate. The dendritic structure of the as-cast TRC alloy was severely attacked, revealing that the as-cast alloy was highly susceptible to corrosion. The presence of twins in wrought alloy was found to act as a corrosion barrier, while the increase in grain size showed the high corrosion rate of the alloy.

Item Type: Article
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Hot Forming; Microstructure; Corrosion Behaviour; Magnesium Alloys; Corrosion barrier
Subjects: T Technology > TJ Mechanical engineering and machinery
Faculty/Division: Faculty of Mechanical Engineering
Depositing User: Mrs. Neng Sury Sulaiman
Date Deposited: 25 Sep 2018 04:48
Last Modified: 02 Jan 2019 02:05
URI: http://umpir.ump.edu.my/id/eprint/22139
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