Mechanical properties of a hybrid cemented carbide composite

Deng, Xin; Patterson, Burton R.; Chawla, K. K.; Koopman, M.; Fang, Zhigang Zak; Lockwood, G.; Griffo, Anthony

doi:10.1016/s0263-4368(01)00060-9

Cited by 62 publications

(29 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As shown in Table 2, the higher grade of cemented carbide has either higher metal binder amount or larger WC particle size, both of which would lead to higher toughness. [23][24][25][26][27] As expected, with increasing grade of cemented carbide, the toughness increases.…”

Section: Experimental Testing Of Cemented Carbide With Current Modelsupporting

confidence: 66%

Toughness Measurement of Cemented Carbides with Chevron‐Notched Three‐Point Bend Test

Deng¹,

Bitler²,

Chawla³

et al. 2010

Adv Eng Mater

Self Cite

View full text Add to dashboard Cite

Plane‐strain fracture toughness is a critical property of metal matrix composites, especially for cemented carbides, ceramics, and tool materials. In this study, we have investigated, numerically and experimentally, the method involving three‐point bend test of a chevron‐notched specimen to evaluate fracture toughness of cemented carbides. A comprehensive formula is presented for a wide range of test dimensions and chevron notch angles. Cemented carbides with different toughness levels were tested. The proposed formula provides a more accurate and valid expression compared with existing methods. It offers an accurate, convenient, and practical method for toughness testing of cemented carbide, ceramics, tool materials, and other metal matrix composites.

show abstract

Section: Experimental Testing Of Cemented Carbide With Current Modelsupporting

confidence: 66%

Toughness Measurement of Cemented Carbides with Chevron‐Notched Three‐Point Bend Test

Deng¹,

Bitler²,

Chawla³

et al. 2010

Adv Eng Mater

Self Cite

View full text Add to dashboard Cite

show abstract

“…The formation of the mesostructure allows one to produce composite materials with particular properties by varying sizes and compositions of mesoelements as well as the composition and properties of a matrix [57,58].…”

Section: Thermodynamics Of Mesostructure Formation In Composite Matermentioning

confidence: 99%

Thermodynamics of the formation of composite material structures. A review

Lisovsky

2015

J. Superhard Mater.

View full text Add to dashboard Cite

Thermodynamics of the formation of composite material structures. A review Composite material structures at nano-, micro-, and meso-levels have been examined. The application of the Gibbs and Hill thermodynamics has allowed researchers to give the physical interpretation of the Laplace pressure for composite materials; to derive the thermodynamic functions describing the particles consolidation; to establish the new phenomenon, namely, metal melt imbibition (MMI), and to define its acting forces, to establish the criterion that allows to determine a direction of a liquid phase migration in a composite body, as well as to predict the final structure of composite materials. For the description of composite material structure, which forms under extreme conditions, it has been necessary to use the nonequilibrium thermodynamics. At the extreme conditions the Prigogine concept of local equilibrium is promising.

show abstract

“…The tribological, mechanical and thermal properties of the WC cemented carbide substantially depend on its composition and the WC particle size (Dixon et al 1985;Pirso et al 2004). It has been concluded that fine external grains cause greater hardness and high wear resistance (Milman et al 1999).For enhancing the fracture toughness (Deng et al 2001) and shock resistance (Bilgin et al 2013), increment in granule b Schematic of cutting action of continuous miner machine size is necessary. It has been explained that as the binder content of cemented carbide increases, the bulk hardness decreases and sliding wear rate increases (Pirso et al 2004).…”

Section: Literature Reviewmentioning

confidence: 99%

Wear Assessment of Conical Pick used in Coal Cutting Operation

2014

View full text Add to dashboard Cite

Conical pick is a widely used tool for cutting coal in mines. It has a cemented carbide tip inserted in a steel body. Cemented carbide has been in use for many years for coal/rock cutting because it has the optimum combination of hardness, toughness and resistance against abrasive wear. As coal/rock is a heterogeneous substance, the cutting tool has to undergo various obstructions at the time of excavation that cause the tool to wear out. The cracks and fractures developing in the cemented carbide limit the life of the tool. For a long time, different wear mechanisms have been studied to develop improved grades of cemented carbide with high wear resistance properties. The research is still continuing. Moreover, due to the highly unpredictable nature of coal/rock, it is not easy to understand the wear mechanisms. In the present work, an attempt has been made to understand the wear mechanisms in four conical picks, which were used in a continuous miner machine for underground mining of coal. The wearing pattern of the conical pick indicates damage in its cemented carbide tip as well as the steel body. The worn out parts of the tools have been critically examined using scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) point analysis. Mainly four types of wear mechanisms, namely, coal/rock intermixing, plastic deformation, rock channel formation and crushing and cracking, have been detected. The presence of coal/rock material and their respective concentrations in the selected area of worn out surface were observed using the spectra generated by EDX analysis.

show abstract

Mechanical properties of a hybrid cemented carbide composite

Cited by 62 publications

References 1 publication

Toughness Measurement of Cemented Carbides with Chevron‐Notched Three‐Point Bend Test

Toughness Measurement of Cemented Carbides with Chevron‐Notched Three‐Point Bend Test

Thermodynamics of the formation of composite material structures. A review

Wear Assessment of Conical Pick used in Coal Cutting Operation

Contact Info

Product

Resources

About