Some characteristics of the binder phase in cemented carbides

Penrice, Thomas W.

doi:10.1016/s0263-4368(97)81232-2

Cited by 16 publications

(4 citation statements)

References 3 publications

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“…thus, Co-Ni binder alloys exhibit lower strength but higher ductility than cobalt [23,24]. On the other hand, a clear influence of the binder chemical nature on the flexural strength was not evidenced.…”

Section: Hardness Flexural Strength and Fracture Toughnessmentioning

confidence: 89%

Fracture and fatigue behavior of WC–Co and WC–CoNi cemented carbides

Tarragó

Roa

Valle

et al. 2015

International Journal of Refractory Metals and Hard Materials

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The fracture and fatigue characteristics of several cemented carbide grades are investigated as a function of their microstructure. In doing so, the influence of binder chemical nature and content (Co and 76 wt% Co-24 wt% Ni), as well as carbide grain size on hardness, flexural strength, fracture toughness and fatigue crack growth (FCG) behavior is evaluated. Mechanical testing is combined with a detailed inspection of crack-microstructure interaction, by means of scanning electron microscopy, in order to evaluate crack-path tortuosity and to discern fracture and fatigue micromechanisms within the metallic binder. Results show that CoNi-base hardmetals exhibit slightly lower hardness but higher toughness values than Co-base grades. Meanwhile, flexural strength is found to be rather independent of the binder chemical nature. Regarding FCG behavior, experimental results indicate that: (1) FCG threshold (K th ) values for coarse-grained grades are higher than those measured for the medium-grained ones; and (2) fatigue sensitivity levels exhibited by CoNi-and Co-base cemented carbides, for a given binder mean free path, are similar. These findings are rationalized on the basis of the increasing relevance of crack deflection mechanisms as microstructure gets coarser and the evidence of similar fatigue degradation phenomena within the binder independent of its chemical nature, respectively.

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Section: Hardness Flexural Strength and Fracture Toughnessmentioning

confidence: 89%

Fracture and fatigue behavior of WC–Co and WC–CoNi cemented carbides

Tarragó

Roa

Valle

et al. 2015

International Journal of Refractory Metals and Hard Materials

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“…Furthermore, as a direct consequence of this (W,C) solid-solution nature, Co-base binder alloys within hardmetals generally exhibits the Co hightemperature face centered cubic (fcc) configuration, instead of the room-temperature hexagonal close packed (hcp) one [9,10]. In this regard, existing literature on the mechanical response and deformation mechanisms of (fcc) hardmetal binder-like alloys is quite limited, as the few existing studies have focused on chemical composition -tensile response / corrosion behavior relationships [10][11][12][13][14][15][16]. Within this framework, it is the purpose of this study to document and analyze the nanoindentation response and associated deformation mechanisms in a hardmetal binder-like Co-W-C alloy.…”

Section: Introductionmentioning

confidence: 99%

Berkovich nanoindentation and deformation mechanisms in a hardmetal binder-like cobalt alloy

Roa

Jiménez‐Piqué

Tarragó

et al. 2015

Materials Science and Engineering: A

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“…12 It was reported that solid solution hardening of the binder phase is due to the metal atoms only, such as W, Ti, Mo, and so on, and the solubilities for metal elements are dramatically different in Ni-Co and Ni binder. 13 By comparing Fig. 3a with b, it can be seen that the Ni binder phase contains higher W, Ti and Mo elements than that of Ni-Co binder.…”

Section: Compositional Analysismentioning

confidence: 92%

Microstructure, hardness and fracture toughness of TiC based cermets with nano TiN powders addition

Liu¹,

Cui²,

Ying³

et al. 2007

Powder Metallurgy

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The compositions of the core/rim structure and liquid binder of TiC based cermets with nano TiN powders addition have been investigated in order to better understand the influence of compositions on properties. In addition, the distribution behaviour of nano TiN particles and the role of Mo addition were studied respectively. It was found that most of the nano TiN particles were distributed between the TiC/TiC boundaries and the variations in the Mo content had a great influence on the rim growth. Furthermore, a significant improvement in the mechanical properties of TiC-Ni-Co systems was found, compared with that of TiC-Ni systems. The refined microstructure and high fraction of rim phase in the TiC-Ni-Co systems are likely responsible for this difference.

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Some characteristics of the binder phase in cemented carbides

Cited by 16 publications

References 3 publications

Fracture and fatigue behavior of WC–Co and WC–CoNi cemented carbides

Fracture and fatigue behavior of WC–Co and WC–CoNi cemented carbides

Berkovich nanoindentation and deformation mechanisms in a hardmetal binder-like cobalt alloy

Microstructure, hardness and fracture toughness of TiC based cermets with nano TiN powders addition

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