Effect of grain refinement induced by wire and arc additive manufacture (WAAM) on the corrosion behaviors of AZ31 magnesium alloy in NaCl solution

Additive manufacturing (AM) of Mg alloys has become a promising strategy for producing complex structures, but the corrosion performance of AM Mg components remains unexploited. In this study, wire and arc additive manufacturing (WAAM) was employed to produce single AZ31 layer. The results revealed...

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Bibliographic Details
Published inJournal of magnesium and alloys Vol. 11; no. 1; pp. 217 - 229
Main Authors LI, Jianwei, QIU, Youmin, YANG, Junjie, SHENG, Yinying, YI, Yanliang, ZENG, Xun, CHEN, Lianxi, YIN, Fengliang, SU, Jiangzhou, ZHANG, Tiejun, TONG, Xin, GUO, Bin
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.01.2023
KeAi Communications Co., Ltd
Subjects
AZ31 magnesium alloy
Grain refinement
Intergranular corrosion
Microstructure
Wire and arc additive manufacturing (WAAM)
AZ31 magnesium alloy
Microstructure
Wire and arc additive manufacturing (WAAM)
Grain refinement
Intergranular corrosion
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Summary:Additive manufacturing (AM) of Mg alloys has become a promising strategy for producing complex structures, but the corrosion performance of AM Mg components remains unexploited. In this study, wire and arc additive manufacturing (WAAM) was employed to produce single AZ31 layer. The results revealed that the WAAM AZ31 was characterized by significant grain refinement with non-textured crystallographic orientation, similar phase composition and stabilized corrosion performance comparing to the cast AZ31. These varied corrosion behaviors were principally ascribed to the size of grain, where cast AZ31 and WAAM AZ31 were featured by micro galvanic corrosion and intergranular corrosion, respectively.
ISSN:2213-9567
2213-9567
DOI:10.1016/j.jma.2021.04.007