Work

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

Year: 2024

Type: article

Abstract: 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.

Source: Materials Research Letters

DOI: 10.1080/21663831.2024.2405085

Authors: Maobao Xu, Haibin Wang, Xuemei Liu, Hao Lu, Xiaoyan Song

Institution: Beijing University of Technology

Language: English

Topic: Advanced materials and composites

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,459

Funders: National Natural Science Foundation of China, Beijing Municipal Natural Science Foundation, National Key Research and Development Program of China