Effects of LaB6 addition on the microstructure and mechanical properties of ultrafine grained WC–10Co alloys

Shen, Tingting; Xiao, Dan; Ou, Xiaoqin; Song, Min; He, Yuehui; Lin, Nan; Zhang, D.F.

doi:10.1016/j.jallcom.2010.09.202

Cited by 54 publications

(18 citation statements)

References 10 publications

(11 reference statements)

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“…However, the hardness decreased when the temperature increased to 1350 C. As sintering temperature raining, the microstructure turned coarser and coarser. It may cause the hardness decreased [20]. This can be concluded that sintering temperature had more influence on the hardness than Mo content.…”

Section: Mechanical Properties Of the Sintered Compositesmentioning

confidence: 95%

Effect of Mo addition on the microstructure and properties of WC–Ni–Fe hard alloys

Zhao

Liu

Tang

et al. 2015

Journal of Alloys and Compounds

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Section: Mechanical Properties Of the Sintered Compositesmentioning

confidence: 95%

Effect of Mo addition on the microstructure and properties of WC–Ni–Fe hard alloys

Zhao

Liu

Tang

et al. 2015

Journal of Alloys and Compounds

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“…When the hardness of the second phase is higher than that of the matrix material, the hardness of the composites will increase 20,21 . However, when the SiCw content exceeds 0.5 wt%, the HV of the cermets decreases mainly due to the decrease in the relative density and the increase in the porosity 22,23 . The interfacial bonding strength between the hard phase and the binder phase decreases with decreasing relative density and increasing porosity.…”

Section: Resultsmentioning

confidence: 99%

“…20,21 However, when the SiCw content exceeds 0.5 wt%, the HV of the cermets decreases mainly due to the decrease in the relative density and the increase in the porosity. 22,23 The interfacial bonding strength between the hard phase and the binder phase decreases with decreasing relative density and increasing porosity. Poor interface bonding will lead to failure of the materials under an external load, resulting in a lower hardness.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Preparation and toughening mechanism of Mo₂NiB₂‐based cermets with SiC whiskers

Zhang

et al. 2021

Int J Applied Ceramic Tech

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Mo2NiB2 is a kind of cermet with excellent mechanical properties, stable chemical properties, and excellent corrosion resistance and is often used in wear‐resistant application fields, such as injection molding machine parts, can making tools and hot copper extruding dies. The brittleness of Mo2NiB2‐based cermets limits their wide application. Mo2NiB2‐based cermets were prepared by the vacuum sintering method, the effect of SiC whiskers (SiCw) on the microstructure and mechanical properties of cermets was investigated, and the toughening mechanism of SiCw on cermets was further discussed. The results indicate that with increasing SiCw content, the indentation fracture toughness (KIC), transverse fracture strength (TRS), and Vickers hardness (HV) of the cermets first increase and then decrease. The HV, TRS, and indentation fracture toughness of Mo2NiB2‐based cermets with 0.5 wt% SiCw are 1 113 HV, 1 620 MPa, and 27.97 MPa·m1/2, respectively, which are 16.8%, 22.7%, and 25% higher than those without SiCw. In the sliding friction tests, Mo2NiB2‐based cermets with 0.5 wt% SiCw have the smallest friction coefficient, low wear rate, and high wear resistance. SEM observation and analysis of the crack path and fracture surface showed that the toughening mechanism is whisker bridging, crack deflection, microcrack toughening, and whisker pull‐out. The results indicate that the addition of 0.5 wt% SiCw can effectively improve the mechanical properties of Mo2NiB2‐based cermets and further expand the application space of Mo2NiB2‐based cermets.

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“…The microstructure of polished specimens was studied using an FEI Nano230 SEM equipped with energy dispersive spectroscopy (EDS). The X-ray diffraction (XRD) analysis was carried out for phase identification [9][10][11]. The transverse rupture strength was tested by the 3-point bending method with an INSTRON3369.…”

Section: Methodsmentioning

confidence: 99%

Influence of Micron WC Addition on the Microstructure and Mechanical Properties of Ultrafine WC–Co Cemented Carbides at the Elevated Temperature

Liu

Lin

et al. 2018

J. Superhard Mater.

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Influence of micron WC addition on the microstructure and mechanical properties of ultrafine WC-Co cemented carbides at the elevated temperature In this paper, the influence of micron-grained WC additions with the different grain sizes on the microstructure and hardness of ultrafine WC-Co cemented carbides at the elevated temperature were investigated by the scanning electron microscope and mechanical properties test. The Vickers hardness and transverse rupture strength of hardmetals were measured at temperatures ranging from room temperature to 800 °C. The results show that the addition of micron-sized WC particles can lead to the increase of fracture toughness and slow the decreasing of hardness at the elevated temperature.

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Effects of LaB6 addition on the microstructure and mechanical properties of ultrafine grained WC–10Co alloys

Cited by 54 publications

References 10 publications

Effect of Mo addition on the microstructure and properties of WC–Ni–Fe hard alloys

Effect of Mo addition on the microstructure and properties of WC–Ni–Fe hard alloys

Preparation and toughening mechanism of Mo₂NiB₂‐based cermets with SiC whiskers

Influence of Micron WC Addition on the Microstructure and Mechanical Properties of Ultrafine WC–Co Cemented Carbides at the Elevated Temperature

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Effects of LaB6 addition on the microstructure and mechanical properties of ultrafine grained WC–10Co alloys

Cited by 54 publications

References 10 publications

Effect of Mo addition on the microstructure and properties of WC–Ni–Fe hard alloys

Effect of Mo addition on the microstructure and properties of WC–Ni–Fe hard alloys

Preparation and toughening mechanism of Mo2NiB2‐based cermets with SiC whiskers

Influence of Micron WC Addition on the Microstructure and Mechanical Properties of Ultrafine WC–Co Cemented Carbides at the Elevated Temperature

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Preparation and toughening mechanism of Mo₂NiB₂‐based cermets with SiC whiskers