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Erschienen in:

2018 | OriginalPaper | Buchkapitel

Influence of Cold Spray on the Enhancement of Corrosion Fatigue of the AZ31B Cast Mg Alloy

verfasst von : S. K. Shaha, S. B. Dayani, H. Jahed

Erschienen in: TMS 2018 147th Annual Meeting & Exhibition Supplemental Proceedings

Verlag: Springer International Publishing

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Abstract

High strength Al 7075 powder was successfully deposited on the AZ31B as-cast dog bone samples. The electro chemical corrosion behavior of AZ31B samples in coated and uncoated condition was examine in 3.5% NaCl aqueous solution at the room temperature. At the same time, the rotating bending fatigue behavior was studied in the similar environmental condition. It is seen that the as deposited cold sprayed alloy obtained lower corrosion resistance compared to the bulk Al 7075 alloy available in the literature, while a significant corrosion resistance was increased in AZ31B alloy with Al 7075 coat. At the same time, the coated sample achieved longer fatigue life compared to the uncoated sample in corrosive environment. The fatigue fracture surface analysis shows that pitting holes were formed at the surface and penetrated up to the coating/substrate interface that basically nucleates the fatigue crack leading to the fatigue fracture.

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Titel: Influence of Cold Spray on the Enhancement of Corrosion Fatigue of the AZ31B Cast Mg Alloy
verfasst von: S. K. Shaha
S. B. Dayani
H. Jahed
Verlag: Springer International Publishing
Buch: TMS 2018 147th Annual Meeting & Exhibition Supplemental Proceedings
Print ISBN: 978-3-319-72525-3

Electronic ISBN: 978-3-319-72526-0

Copyright-Jahr: 2018
DOI: https://doi.org/10.1007/978-3-319-72526-0_51

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