High-temperature mechanical behavior of ultra-coarse cemented carbide with grain strengthening

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

2 Scopus Citations
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Author(s)

  • Haibin Wang
  • Junhua Luan
  • Zengbao Jiao
  • Yong Liu
  • Xiaoyan Song

Detail(s)

Original languageEnglish
Pages (from-to)8-18
Journal / PublicationJournal of Materials Science and Technology
Volume104
Online published9 Sep 2021
Publication statusPublished - 30 Mar 2022

Abstract

Ultra-coarse grained cemented carbides are often used under conditions of concurrently applied stress and high temperature. Improvement of high-temperature mechanical performance of ultra-coarse grained cemented carbides is highly desirable but still a big challenge. In this study, it is proposed that the high-temperature compression strength of ultra-coarse cemented carbides can be enhanced by modulating hard matrix grains by activated TaC nanoparticles, through solid solution strengthening of Ta atoms. Based on the designed experiments and microstructural characterizations combined with finite element simulations, the grain morphology, stress distribution and dislocation configuration were studied in detail for ultra-coarse grained cemented carbides. The mechanisms of Ta dissolving in WC crystal and strengthening ultra-coarse grains through interaction with dislocations were disclosed from the atomic scale. This study opens a new perspective to modulate hard phases of cemented carbides for improving their high-temperature performance, which will be applicable to a variety of cermet and ceramic-based composite materials.

Research Area(s)

  • Dislocation motion, High-temperature compressive behavior, Strengthening of hard-phase grains, Ultra-coarse cemented carbides

Citation Format(s)

High-temperature mechanical behavior of ultra-coarse cemented carbide with grain strengthening. / Hu, Huaxin; Liu, Xuemei; Chen, Jinghong; Lu, Hao; Liu, Chao; Wang, Haibin; Luan, Junhua; Jiao, Zengbao; Liu, Yong; Song, Xiaoyan.

In: Journal of Materials Science and Technology, Vol. 104, 30.03.2022, p. 8-18.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review