硬质合金中Co相强化的研究现状与展望
Research status and prospect of Co-phase strengthening in cemented carbide
廖宇 1张钱伟 1胡启明1
作者信息
- 1. 自贡硬质合金有限责任公司,四川 自贡 643011
- 折叠
摘要
WC-Co硬质合金因其优异的性能而应用在各个领域.但因硬质合金中的Co黏结相的相缺陷限制了其使用,例如低硬度、低耐磨性、高温稳定性差等.由此对于Co相强化的研究从未间断,本文旨在系统地整合各种Co相强化研究工作,总结Co相通过传统的物理冶金强化(第二相强化、相界强化和固溶强化)和颗粒增强后的微观组织特征及力学性能,对比Co相采用不同增强方式后的硬质合金硬度和断裂韧度所能达到的范围,建立成分-微观组织-性能之间的联系,归纳各种强化方式所带来的优势和缺陷.为强化Co相的研究和工业生产提供参考依据,选择合适成分配比和后处理工艺,设计性能指标和使用寿命符合工况需要的硬质合金.
Abstract
WC-Co cemented carbide has applied in various fields due to its excellent properties.However,the defects of Co bonding phase in hard alloys,such as low hardness,low wear resistance,and poor high-temperature stability,limit their use.The research on Co phase strengthening has never been interrupted.Therefore,this paper aimed to integrate the various Co phase strengthening research efforts systematically and summarized the microstructural characteristics and mechanical properties of strengthening Co phase through traditional physical metallurgical strengthening(such as second phase strengthening,phase boundary strengthening,and solid solution strengthening)and particle strengthening.The hardness and toughness ranges of cemented carbide by different methods for Co phase were compared,the relationship of composition,microstructure,and property was established,and the advantages and disadvantages of various reinforcement methods were summed up.It provides a reference for the strengthened Co phase research and industrial production.According to the needs of working conditions,the performance indicators and service life of cemented carbide products are designed.
关键词
硬质合金/黏结相/Co相强化/强化机制Key words
cemented carbide/binder phase/Co phase strengthening/strengthening mechanism引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据