Change of Microstructure and Properties of WC–Co Cemented Carbides as a Result of High Pressure and Temperature

IF 0.7 4区 材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY
I. O. Hnatenko, I. V. Andreiev, S. O. Lysovenko, O. S. Roik, M. O. Tsysar, T. O. Kosenchuk
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引用次数: 0

Abstract

The change in the structure and physicomechanical properties of sintered binding WC–6Co, and WC–15Co cemented carbides because of the action of high pressure (8 GPa) and high temperature (HPHT) in the Toroid installation is investigated. It is established that as a result of HPHT treatment at temperatures above the melting point of the metal binding phase, there is a decrease in the coercive force of the experimental alloys due to the growth of the carbide grain of the alloy. In alloys with a higher content of the binding phase, Co3W, Co6W6C intermetallic phases, and oxide of the Co2O3 type are formed. The hardness of the HPHT treated WC–6Co alloy samples decreases due to the growth of the alloy carbide grain, and the hardness of the treated WC–15Co samples increases due to the formation of intermetallic phases.

Abstract Image

高压和高温导致的 WC-Co 硬质合金显微结构和性能变化
研究了烧结结合 WC-6Co 和 WC-15Co 硬质合金的结构和物理机械性能在环形装置的高压(8 GPa)和高温(HPHT)作用下的变化。结果表明,在高于金属结合相熔点的温度下进行 HPHT 处理后,由于合金碳化物晶粒的生长,实验合金的矫顽力有所下降。在结合相含量较高的合金中,会形成 Co3W、Co6W6C 金属间相和 Co2O3 类型的氧化物。经 HPHT 处理的 WC-6Co 合金样品的硬度会因合金碳化物晶粒的生长而降低,而经处理的 WC-15Co 样品的硬度则会因金属间相的形成而升高。
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来源期刊
Materials Science
Materials Science 工程技术-材料科学:综合
CiteScore
1.60
自引率
44.40%
发文量
63
审稿时长
4-8 weeks
期刊介绍: Materials Science reports on current research into such problems as cracking, fatigue and fracture, especially in active environments as well as corrosion and anticorrosion protection of structural metallic and polymer materials, and the development of new materials.
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