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2021 | OriginalPaper | Chapter

4. Microstructures of Cold Sprayed Deposits

Authors : Shuo Yin, Rocco Lupoi

Published in: Cold Spray Additive Manufacturing

Publisher: Springer International Publishing

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Abstract

The microstructure of cold sprayed deposits directly determines the properties of CSAM products and thus it is of importance to well understand the microstructural evolution mechanism of cold sprayed deposits. The microstructure is largely dependent on the plastic deformation behaviour of cold spray feedstock particles during their deposition. As the plastic deformation of cold spray particles is not homogenous with severe plastic deformation occurring at the contact interfaces, cold sprayed deposits typically have heterogenous microstructure and grain structures. A large number of dislocations and newly formed grains are only localized in the shear zones at the interparticle interfaces, while the microstructure in the interior region is mainly characterized by coarse grains. This chapter thoroughly discusses the formation mechanism of dislocations and ultra fine grains (UFGs) in various cold sprayed deposits during cold spray deposition. The formation mechanisms of intermetallic compounds and amorphous phases are also interpreted and discussed.

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Title: Microstructures of Cold Sprayed Deposits
Authors: Shuo Yin
Rocco Lupoi
Publisher: Springer International Publishing
Book: Cold Spray Additive Manufacturing
Print ISBN: 978-3-030-73366-7

Electronic ISBN: 978-3-030-73367-4

Copyright Year: 2021
DOI: https://doi.org/10.1007/978-3-030-73367-4_4

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