Formation mechanism of cellular structure of Ni32.5Co15Cr10Fe23Al17.5Mo1.5W0.5 eutectic high-entropy alloys by selective laser melting

Autor:	An Xie, Huan Yu, Xiaoyu Bai, Zhijun Wang, Junjie Li, Jincheng Wang, Feng He
Jazyk:	angličtina
Rok vydání:	2024
Předmět:	Cellular structure rapid solidification high entropy alloys microstructure evolution Materials of engineering and construction. Mechanics of materials TA401-492
Zdroj:	Materials Research Letters, Pp 1-8 (2024)
Druh dokumentu:	article
ISSN:	21663831 2166-3831
DOI:	10.1080/21663831.2024.2443051
Popis:	The extremely fast cooling rate of selective laser melting can significantly refine the lamellar structure of eutectic high-entropy alloys. However, extreme solidification conditions also promote the appearance of honeycomb-like cellular structures. Here, we show that the competitive growth of the primary phase and eutectic determines the formation of cellular structure. Our results demonstrated that the composition conditions of FCC-B2 eutectic formation are more severe at excessively high growth rates. Therefore, although increasing the cooling rate will significantly decrease the size of the cellular structure, it cannot change the morphology of the cellular structure of Ni32.5Co15Cr10Fe23Al17.5Mo1.5W0.5 hypereutectic alloy.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/c96c9703918b4fcea7674a8143ab08f9 Zobrazit plný text záznamu View record in DOAJ