材料科学技术(英文版)2022，Vol.104Issue(9) ：8-18.

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

Huaxin Hu Xuemei Liu Jinghong Chen Hao Lu Chao Liu Haibin Wang Junhua Luan Zengbao Jiao Yong Liu Xiaoyan Song
材料科学技术(英文版)2022，Vol.104Issue(9) ：8-18.
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  • NSTL
  • 维普
  • 万方数据

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

Huaxin Hu 1Xuemei Liu 1Jinghong Chen 1Hao Lu 1Chao Liu 2Haibin Wang 1Junhua Luan 3Zengbao Jiao 4Yong Liu 5Xiaoyan Song1
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作者信息

  • 1. Faculty of Materials and Manufacturing,Key Laboratory of Advanced Functional Materials,Ministry of Education of China,Beijing University of Technology,Beijing 100124,China
  • 2. Xiamen Tungsten Co.,Ltd.,Xiamen 361009,China
  • 3. Department of Materials Science and Engineering,City University of Hong Kong,Hong Kong,China
  • 4. Department of Mechanical Engineering,The Hong Kong Polytechnic University,Hong Kong,China
  • 5. State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China
  • 折叠

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 simu-lations,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 strengthen-ing 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.

Key words

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

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基金项目

National Key Program of Re-search and Development(2018YFB0703902)

National Natural Science Foundation of China(51631002)

National Natural Science Foundation of China(51621003)

National Natural Science Foundation of China(52101003)

National Natural Science Foundation of China(52171061)

National Natural Science Foundation of China(U20A20236)

出版年

2022
材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI
影响因子：0.657
ISSN：1005-0302
参考文献量1
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