Microstructural evolution and toughening mechanism of WC-Co composite prepared by amorphous-crystallization method

Autor:	Maobao Xu, Haibin Wang, Xuemei Liu, Hao Lu, Xiaoyan Song
Jazyk:	angličtina
Rok vydání:	2024
Předmět:	WC-Co composite amorphous-crystallization method Co-rich nanoparticle coherent interface fracture toughness Materials of engineering and construction. Mechanics of materials TA401-492
Zdroj:	Materials Research Letters, Vol 12, Iss 12, Pp 921-928 (2024)
Druh dokumentu:	article
ISSN:	21663831 2166-3831
DOI:	10.1080/21663831.2024.2405085
Popis:	In this study, toughening of WC-Co composite prepared by amorphous-crystallization method was investigated. Co-rich nanoparticles, a Co(W,C) solid solution, were incorporated into the WC matrix through the process integrating crystallization of amorphous Co2W4C powder and its in-situ reaction with carbon. The microstructural evolution of the ceramic-metal composite during fabrication was studied in detail. Owing to the interactions between Co-rich nanoparticles coherent with the WC matrix and the dislocations and stacking faults inside WC grains, the composite exhibited high hardness and strength combined with exceptional fracture toughness. The mechanisms for the synergistic improvement of mechanical properties of the composite were disclosed.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/9a7a6b43441244219d7d514fb68e8766 Zobrazit plný text záznamu View record in DOAJ