Related Experiment Video
Updated: Nov 13, 2025
Processing of Bulk Nanocrystalline Metals at the US Army Research Laboratory
Published on: March 7, 2018
Mechanical Properties and Rapid Sintering of Nanostructured WC-Al₂O₃-Al Hard Materials
1Division of Advanced Materials Engineering, The Research Center of Hydrogen Fuel Cell, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896, Republic of Korea.
Abstract:
Nanostructured WC-Al₂O₃-Al composites was sintered using rapid high-frequency induction heated sintering (HFIHS) and the mechanical properties such as hardness and fracture toughness with consolidation were investigated. The HFIHS method induced a very fast densification nearly at the level of theoretical density and successfully prohibited grain growth, resulting in nano-sized grains. The fracture toughness was improved due to the consolidation facilitated by adding Al to WC-Al₂O₃ matrix. The WC-Al₂O₃ composites added with 5 and 10 vol.% Al showed higher hardness and fracture toughness compared with that of WC-Al₂O₃.
