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2018 | OriginalPaper | Chapter

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

Authors : S. K. Shaha, S. B. Dayani, H. Jahed

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

Publisher: 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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previous chapter Thermal Fatigue Behavior of High Cr Roller Steel
next chapter High Temperature Cracking Damage of Calcium Aluminate Cements
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Metadata
Title
Influence of Cold Spray on the Enhancement of Corrosion Fatigue of the AZ31B Cast Mg Alloy
Authors
S. K. Shaha
S. B. Dayani
H. Jahed
Copyright Year
2018
Book
TMS 2018 147th Annual Meeting & Exhibition Supplemental Proceedings

Print ISBN: 978-3-319-72525-3

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

Copyright Year: 2018

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

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