The fracture and fatigue of sintered diamond compact

Lee, M.

doi:10.1007/bf00550720

Cited by 27 publications

(6 citation statements)

References 1 publication

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“…Wear was only detected after an incubation period, which decreased as the hardness of the second material increased, but which was always finite. Results showing that sintered diamond compacts can show fatigue in drilling experiments have been given by Dunn and Lee [116].…”

Section: Fatiguementioning

confidence: 85%

The mechanical and strength properties of diamond

Field

2012

Rep. Prog. Phys.

164

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Diamond is an exciting material with many outstanding properties; see, for example Field J E (ed) 1979 The Properties of Diamond (London: Academic) and Field J E (ed) 1992 The Properties of Natural and Synthetic Diamond (London: Academic). It is pre-eminent as a gemstone, an industrial tool and as a material for solid state research. Since natural diamonds grew deep below the Earth's surface before their ejection to mineable levels, they also contain valuable information for geologists. The key to many of diamond's properties is the rigidity of its structure which explains, for example, its exceptional hardness and its high thermal conductivity. Since 1953, it has been possible to grow synthetic diamond. Before then, it was effectively only possible to have natural diamond, with a small number of these found in the vicinity of meteorite impacts. Techniques are now available to grow gem quality synthetic diamonds greater than 1 carat (0.2 g) using high temperatures and pressures (HTHP) similar to those found in nature. However, the costs are high, and the largest commercially available industrial diamonds are about 0.01 carat in weight or about 1 mm in linear dimension. The bulk of synthetic diamonds used industrially are 600 µm or less. Over 75% of diamond used for industrial purposes today is synthetic material. In recent years, there have been two significant developments. The first is the production of composites based on diamond; these materials have a significantly greater toughness than diamond while still maintaining very high hardness and reasonable thermal conductivity. The second is the production at low pressures by metastable growth using chemical vapour deposition techniques. Deposition onto non-diamond substrates was first demonstrated by Spitsyn et al 1981 J. Cryst. Growth 52 219-26 and confirmed by Matsumoto et al 1982 Japan J. Appl. Phys. 21 L183-5. These developments have added further to the versatility of diamond. Two other groups of materials based on carbon, namely the fullerenes and graphines have been identified in recent years and are now the subject of intense research.

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Section: Fatiguementioning

confidence: 85%

The mechanical and strength properties of diamond

Field

2012

Rep. Prog. Phys.

164

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“…Gross fracturing of relatively un--worn cutters was found as the predominant failure mechanism. Dunn and Lee [14] performed fatigue tests on sintered PDC and, like Moseley et al [4] and Zacny [6], also reported a reduction in fracture stress due to repeated loading. In addition, Dunn and Lee suggested that fatigue in PDC was likely to be caused by some irreversible processes involving opening and closing of sub--critical cracks followed by the gradual growth of the same [14].…”

Section: Introductionmentioning

confidence: 92%

Impact fatigue fracture of polycrystalline diamond compact (PDC) cutters and the effect of microstructure

Kanyanta

Dormer

Murphy

et al. 2014

International Journal of Refractory Metals and Hard Materials

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“…The researchers seem to be very divided about this point. For instance, Dunn and Lee [22] suggested that mechanical overloading of the cutters and a subsequent brittle crack propagation are the main causes of failure. On the opposite, Sneddon and Hall [23] considered fatigue crack growth as a possible dominant fracture mechanism, since cutters are repeatedly subjected to impacts.…”

Section: Experimental Observation Of Failure Modes and Proposed Classmentioning

confidence: 99%

“…5. Considering P * = 2000 N as the typical peak value of the impact force experienced during experimental tests [22], the nondimensional critical load corresponding to crack propagation, P c /P * , is depicted in Fig. 6 as a function of the relative crack depth, a/a max , where a max denotes the crack length at failure, i.e.…”

Section: Chipping Failure Modesmentioning

confidence: 99%