Mechanical properties and microstructural evolution of WC-binderless and WC-Co hard materials by the heat treatment process

Lee, Jeong-Han; Oh, Ik-Hyun; Jang, Jun‐Ho; Hong, Seung‐Eun; Park, Hyun-Kuk

doi:10.1016/j.jallcom.2019.01.282

Cited by 38 publications

(7 citation statements)

References 23 publications

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“…2(a), the decrease in WC lattice parameters from 2.517 to 2.499 Å to increasing HfB 2 content indicates lattice distortion by the formation of solid solutions. In addition, the intensity of the basal plane (001) of WC was significantly decreased by hard HfB 2 dispersants which interfered with the coherent relationship of hcp-WC(001)//fcc-Co(111) interface [1]. Hence, they act as obstacles to the dislocations and the basal twins that could cause plastic deformation [6].…”

Section: Resultsmentioning

confidence: 99%

“…Tungsten carbide-cobalt (WC-Co) cemented carbides are widely used in cutting tools for machining of hard materials, which require high strength, thermal stability, and wear resistance [1][2]. However, WC-Co cemented carbides undergo severe electrochemical corrosion and oxidation above 400℃ [3,4], which reduce the life of cutting tools because of abrasion between the cutting edge and surface [3].…”

Section: Introductionmentioning

confidence: 99%

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Archives of Metallurgy and Materials

Park,

Oh,

Kim

et al. 2021

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Consolidation and oxidation of Ultra fine WC-Co-HfB 2 Hard Materials By spark plasMa sinteringIn this study, a novel composite was fabricated by adding the Hafnium diboride (HfB 2 ) to conventional WC-Co cemented carbides to enhance the high-temperature properties while retaining the intrinsic high hardness. using spark plasma sintering, high density (up to 99.4%) WC-6Co-(1, 2.5, 4, and 5.5 wt. %) HfB 2 composites were consolidated at 1300℃ (100℃/min) under 60 MPa pressure. The microstructural evolution, oxidation layer, and phase constitution of WC-Co-HfB 2 were investigated in the distribution of WC grain and solid solution phases by X-ray diffraction and Fe-Sem. The WC-Co-HfB 2 composite exhibited improved mechanical properties (approximately 2,180.7 kg/mm 2 ) than those of conventional WC-Co cemented carbides. The high strength of the fabricated composites was caused by the fine-grade HfB 2 precipitate and the solid solution, which enabled the tailoring of mechanical properties.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Park,

Oh,

Kim

et al. 2021

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“…A combinação WC-Co resulta na obtenção de excelentes propriedades mecânica, HE et al, 2018), rotas de síntese do WC-15%pCo através da redução e carbonização em uma atmosfera de hidrogênio e carbono para obtenção de carbetos cimentados ultrafinos (YANG et al, 2018), efeito do teor de cobalto na síntese do WC-Co a partir da utilização do trióxido de tungstênio + cobalto e sinterizados por pulso de plasma (PARK; KIM; KANG, 2018), efeito do processamento da moagem de alta energia no processo de sinterização do WC-8%pCo sinterizados por pulso de plasma (WANG et al, 2019), microestrutura e propriedades mecânicas do WC-Co com uma distribuição de grão duplo a partir de pós processados em um moinho planetário e sinterizados sob vácuo (KE et al, 2019), o efeito de tratamentos térmicos na microestrutura e propriedades mecânicas do metal duro WC-Co (LEE et al, 2019), influência da velocidade de rotação de um moinho planetário na redução de área específica em pós nanométricos de WC-Co (DVORNIK; MIKHAILENKO, 2020), transformação de fase durante a sinterização do WC-8%pCo sinterizado em estado sólido (FEDOROV et al, 2022).…”

Section: A Comunidade Científica E O Metal Duro Wc-counclassified

Uma revisão da literatura do metal duro WC-Co e o desenvolvimento de novos ligantes

Lourenço¹,

Gomes²

2023

PRW

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O metal duro, também conhecido como carbeto cimentado, é um material de grande relevância para o desenvolvimento industrial, pois é utilizado como ferramenta de corte para a usinagem de diversos componentes. Logo, devido a importância do metal duro, este trabalho busca apresentar os principais conceitos e pesquisas relacionados a temática dos carbetos cimentados, tais como: definição, formas de processamento, problemáticas, propriedades e desenvolvimento de novos ligantes através dos artigos encontrados na literatura.

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“…On the other hand, Co is a type of rare metal and is a strategic resource [8][9][10]. Reducing the usage of Co or developing substitute elements has been always a hot topic among materials researchers [2,7,[11][12][13][14]. In this case, it is of great worth to explore alternative binder phases to replace the traditional Co in WC-based cermet.…”

Section: Introductionmentioning

confidence: 99%

Microstructure, Mechanical Properties and Wear Behaviors of Ultrafine-Grain WC-Based Cermets with Different Binder Phases Fabricated by Spark Plasma Sintering

Xu,

Wang,

Cao

et al. 2024

Materials

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In this work, to explore potential substitutions for the Co binder phase, ultrafine-grain WC-based cermets with various binder phases of Co, Ni and AlCoCrNiFeCu HEA were prepared using the SPS method. Based on SPS, WC-based cermets were fabricated at higher speed, showing fine carbide particles less than 410 μm. The microstructure, mechanical properties and wear properties were systematically evaluated. By comparison, the grain size of WC was the lowest for WC-10Co, while WC-10 HEA cermet held the coarsest WC particles. The hardness and fracture toughness of WC-10 HEA were the best among all three samples, with values of 93.2 HRA and 11.3 MP·m1/2. However, the bending strength of WC-10HEA was about 56.1% lower than that of WC-10Co, with a value of 1349.6 MPa. The reduction in bending strength is attributed to the lower density, formation of a newly Cr-Al rich phase and coarser WC grains. In dry sliding wear conditions, WC-10 HEA showed the lowest wear rate (0.98 × 10−6 mm3/(N·m)) and coefficient of friction (0.19), indicating the best wear resistance performance. This reveals that WC-based cermet with a HEA binder phase has superior wear performance due to the higher hardness and good self-lubricating effect of the wear products.

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Mechanical properties and microstructural evolution of WC-binderless and WC-Co hard materials by the heat treatment process

Cited by 38 publications

References 23 publications

Archives of Metallurgy and Materials

Archives of Metallurgy and Materials

Uma revisão da literatura do metal duro WC-Co e o desenvolvimento de novos ligantes

Microstructure, Mechanical Properties and Wear Behaviors of Ultrafine-Grain WC-Based Cermets with Different Binder Phases Fabricated by Spark Plasma Sintering

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