金属间化合物沉淀硬化钢结合 TiC 基陶瓷的微观结构和机械性能

IF 4.2 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Refractory Metals & Hard Materials Pub Date : 2025-04-08 DOI:10.1016/j.ijrmhm.2025.107179

Qiankun Zhang , Guowei Zhong , Jiaoyan Liu , Minghan Li , Kexin Su , Zhi Meng , Yuxin He , Xinyue Zhao , Zhihui Qiu , Liang Wu , Yifeng Xiao , Yuehui He , Ying HuangFu

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引用次数: 0

摘要

本研究涉及使用SLPS和HIP工艺设计和制造Fe-25Co-15Mo沉淀硬化钢结合的tic基陶瓷。研究了不同烧结温度和热处理工艺下陶瓷的显微组织和力学性能。结果表明：在烧结过程中，添加30%的TiC颗粒不仅能使Fe-Co-Mo钢形成典型的核心-边缘组织，抑制晶粒长大，还能提高其峰值硬度和抗回火性能。与FeCoMo-TiCN陶瓷相比，FeCoMo-TiC陶瓷由于形成了核心-边缘结构，具有更高的冲击韧性，但由于形成μ相的Mo含量减少，硬度降低。同时，μ相可以通过热处理来调节。这项工作丰富了人们对IMC沉淀硬化钢结合陶瓷的认识。

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Microstructure and mechanical properties of an intermetallic compound precipitation hardened steel bonded TiC-based ceramic

The present study involved the design and fabrication of a TiC-based ceramic bound by Fe-25Co-15Mo precipitation hardened steel using SLPS and HIP procedures. The microstructure and mechanical properties of the ceramic with different sintering temperature and heat treatment process were studied. The results show that the addition of 30 % TiC particles can not only form a typical core-rim structure and inhibit the grain growth during sintering, but also enhance the peak hardness and tempering resistance of the Fe-Co-Mo steel. Compared to the previously studied FeCoMo-TiCN ceramic, the FeCoMo-TiC ceramic exhibits significantly higher impact toughness thanks to the formation of the core-rim structure, but lower hardness due to the decrease of Mo content for forming μ phase. Meanwhile, the μ phase can be regulated by heat treatment. This work enriches the knowledge about the ceramics bonded with IMC precipitation-hardened steels.

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来源期刊

$International Journal of Refractory Metals & Hard Materials$

International Journal of Refractory Metals & Hard Materials 工程技术-材料科学：综合

CiteScore

7.00

自引率

13.90%

发文量

236

审稿时长

35 days

期刊介绍： The International Journal of Refractory Metals and Hard Materials (IJRMHM) publishes original research articles concerned with all aspects of refractory metals and hard materials. Refractory metals are defined as metals with melting points higher than 1800 °C. These are tungsten, molybdenum, chromium, tantalum, niobium, hafnium, and rhenium, as well as many compounds and alloys based thereupon. Hard materials that are included in the scope of this journal are defined as materials with hardness values higher than 1000 kg/mm2, primarily intended for applications as manufacturing tools or wear resistant components in mechanical systems. Thus they encompass carbides, nitrides and borides of metals, and related compounds. A special focus of this journal is put on the family of hardmetals, which is also known as cemented tungsten carbide, and cermets which are based on titanium carbide and carbonitrides with or without a metal binder. Ceramics and superhard materials including diamond and cubic boron nitride may also be accepted provided the subject material is presented as hard materials as defined above.