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不同粘结相含量下WC–Co和WC–Ni–Fe硬质合金的微观组织及性能差异研究
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1.江西理工大学 材料科学与工程学院;2.赣州有色冶金研究所有限公司

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江西省高等学校井冈学者特聘教授岗位资助;江西省“双千计划” 科技创新高端人才项目 (项目号jxsq2019201039);江西省重点研发计划项目(项目号20224BBE51041);赣鄱俊才支持计划(项目号20232BCJ23075)


Study on microstructure and properties of WC-Co and WC-Ni-Fe cemented carbides with different binder phase contents
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Affiliation:

1.Jiangxi University of Science and Technology;2.Ganzhou Nonferrous Metallurgy Research Institute Co., LTD

Fund Project:

Jinggang Scholars of higher Education of Jiangxi Province special professor post support; Jiangxi Province "Double Thousand Plan" Science and Technology Innovation high-end talent project (jxsq2019201039); Key R&D Project of Jiangxi Province (20224BBE51041); Gan-Po Outstanding Talents Support Program (2023BCJ23075)

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    摘要:

    本文采用同一工艺制备了两组不同粘结相含量的WC-Co和WC-Ni-Fe硬质合金,研究探讨了WC-Co和WC-Ni-Fe硬质合金的组织结构变化趋势及其性能差异,旨在为矿山工具领域的新型硬质合金应用及研发提供新思路。研究表明,两组WC-Co和WC-Ni-Fe硬质合金的粘结相均为单相结构,粘结相含量增加会引起合金平均晶粒尺寸的增大,在性能上表现为硬度、矫顽磁力下降,而钴磁、抗弯强度和冲击韧性均呈上升趋势。同一粘结相含量下,WC-Co硬质合金的钴磁、矫顽磁力、抗弯强度均高于WC-Ni-Fe硬质合金。粘结相含量较高时,WC-Ni-Fe硬质合金则展现出更好的冲击韧性,最高可达5.9 J/cm2。WC-Co和WC-Ni-Fe硬质合金具有相似的摩擦磨损行为,随着粘结相含量的增加,合金的磨损程度逐步加剧。当合金中具有相同的粘结相含量时,WC-Co硬质合金的耐磨性略好于WC-Ni-Fe硬质合金。

    Abstract:

    Two groups of WC-Co and WC-Ni-Fe cemented carbides with varying binder contents were prepared using the same process. The research explored the trends in the microstructure changes and the differences in properties between WC-Co and WC-Ni-Fe cemented carbides, aiming to provide a novel perspective for the application and development of new cemented carbides in the mining tools industry. The results show that the binder phase of both WC-Co and WC-Ni-Fe cemented carbides exhibits a single-phase structure. As the binder phase content in the alloy increases, there is an increase in the average grain size and a decrease in hardness and coercive magnetic force. Additionally, cobalt magnetism, bending strength, and impact toughness all exhibit upward trends. In comparison, the WC-Co exhibits higher coercive cobalt magnetism, magnetic force, and bending strength than WC-Ni-Fe cemented carbide. However, WC-Ni-Fe cemented carbide exhibits better impact toughness with a higher binder phase content, reaching up to 5.9J/cm2. The frictional behavior of WC-Co and WC-Ni-Fe cemented carbides is similar, but the wear degree of the alloys gradually increases as the binder phase content increases. When comparing equal amounts of binder phase content, the wear resistance of WC-Co is superior to that of WC-Ni-Fe.

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张帆,袁德林,叶育伟,陈颢.不同粘结相含量下WC–Co和WC–Ni–Fe硬质合金的微观组织及性能差异研究[J].稀有金属材料与工程,,().[zhangfan, yuandelin, yeyuwei, chenhao. Study on microstructure and properties of WC-Co and WC-Ni-Fe cemented carbides with different binder phase contents[J]. Rare Metal Materials and Engineering,,().]
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  • 收稿日期:2024-10-31
  • 最后修改日期:2025-01-15
  • 录用日期:2025-01-21
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