PM materials selection: The key for improved performance of diamond tools

Oliveira, Fernando A. Costa; Anjinho, Carlos A.; Coelho, A.; Amaral, P.M.; Coelho, M.

doi:10.1016/j.mprp.2016.04.002

Cited by 21 publications

(17 citation statements)

References 7 publications

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“…Furthermore, it was previously ascertained that hot pressing of MA mixtures made grains of the secondary Fe 3 Ni phase precipitate. Twin defects began to form in Fe 3 Ni as a result of external loads (Figure 9b), which is typical of the materials crystallizing in the fcc system [34]. Twin boundaries reduced the space and impeded the dislocation motion [35].…”

Section: Samplementioning

confidence: 97%

“…Grains of the secondary phase were characterized by a greater Ni concentration and contained dissolved Co (Table 4). An analysis of several Fe 3 Ni grains showed that their elemental compositions were identical. The contribution of solid solution strengthening to enhance the mechanical properties of the alloy was qualitatively assessed by nanoindentation.…”

Section: Structure and Mechanical Properties Of The Hot-pressed Fe-comentioning

confidence: 98%

“…Designing novel economical compositions of binders and the methods to prepare them is a topical trend in the development of diamond tools [2][3][4]. Co has been conventionally considered to be the best material for manufacturing binders due to the combination of high mechanical properties and wear resistance as well as its ability to firmly hold diamond grains within the working layer [1,5].…”

Section: Introductionmentioning

confidence: 99%

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Mechanical Alloying as an Effective Way to Achieve Superior Properties of Fe–Co–Ni Binder Alloy

Логинов

Сидоренко

Bychkova

et al. 2017

Metals

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This study addresses the fabrication of nanocrystalline Fe-Co-Ni alloy using two operations: mechanical alloying (MA) of elemental powders and hot pressing (HP). The evolution of the phase composition and structure of the powder particles after MA was investigated. Ball milling with rotation speed 700 rpm for 15-20 min allows the production of a bcc Fe-based supersaturated solid solution. During the HP of this powder, this solution decomposes into a bcc (Fe) solid solution and fcc Fe 3 Ni precipitates, which act as a recrystallization barrier at elevated temperatures. This factor, along with the solid solution strengthening of the (α-Fe) matrix and high concentration of lattice defects (dislocations and twins), provides high mechanical properties (ultimate bending strength of 2000 MPa and hardness of 108 HRB) and wear resistance of the alloy. The developed Fe-Co-Ni alloy is promising for use as a binder in diamond tools designed for machining abrasive materials.

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Section: Samplementioning

confidence: 97%

Section: Structure and Mechanical Properties Of The Hot-pressed Fe-comentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Mechanical Alloying as an Effective Way to Achieve Superior Properties of Fe–Co–Ni Binder Alloy

Логинов

Сидоренко

Bychkova

et al. 2017

Metals

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show abstract

“…The first diamond circular saw blades were developed by Felix Fromholt in France in 1885. 7) Subsequently, the developments in the field of powder metallurgy led the way to the development of diamond grit impregnated saw blades, which were put into operation around 1940. In the past 50 years, notable developments in this field took place and one such prominent is the invention of synthetic diamonds.…”

Section: Overview On the Diamond Cutting Tools Historymentioning

confidence: 99%

“…With a 50-fold increase in its industrial consumption, at present day, these synthetic diamond grits account for around 97% of all industrial diamonds consumed. 6,7) Chronological developments in the metal bonded diamond cutting tools segment is showcased in the Fig. 4.…”

Section: Overview On the Diamond Cutting Tools Historymentioning

confidence: 99%