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Erschienen in:

2024 | OriginalPaper | Buchkapitel

On Porosity and Its Mitigation and Closure in Additively Manufactured Alloys

verfasst von : Tzee Luai Meng, Na Gong, Wai Luen Chan, Rahul Karyappa, Yuefan Wei, Henry Kuo Feng Cheng, Hongfei Liu

Erschienen in: Proceedings of the 3rd International Conference on Advanced Surface Enhancement (INCASE) 2023

Verlag: Springer Nature Singapore

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Abstract

Porosity has long been observed in manufacturing metal alloys, which is much more frequent in additively manufactured (AM) alloys than in those manufactured by traditional methods such as cast and wrought. The common origin of porosity is strongly depending on specific manufacturing process parameters and conditions. In general, pore structures can originate from a variety of factors, including trapped gas, incomplete fusion, cooling rate, feedstock quality, processing parameters and conditions, etc. By carefully controlling the manufacturing process and conditions, the porosity in AM-alloys can be mitigated. Besides, post-AM treatment, e.g., hot isostatic pressing and/or cold working, can reduce the porosity (in both the size and density) through plastic deformation and materials flow. Here, we present a glimpse on porosity and its effect on mechanical performance of AM alloys. Mitigation and closure of porous structures will also be discussed mainly based on recent observations in aluminum- and nickel-based AM alloys, representing high-temperature high-strength and low-density applications, respectively.

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Titel: On Porosity and Its Mitigation and Closure in Additively Manufactured Alloys
verfasst von: Tzee Luai Meng
Na Gong
Wai Luen Chan
Rahul Karyappa
Yuefan Wei
Henry Kuo Feng Cheng
Hongfei Liu
Verlag: Springer Nature Singapore
Buch: Proceedings of the 3rd International Conference on Advanced Surface Enhancement (INCASE) 2023
Print ISBN: 978-981-9986-42-2

Electronic ISBN: 978-981-9986-43-9

Copyright-Jahr: 2024
DOI: https://doi.org/10.1007/978-981-99-8643-9_25

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