Role of Rate and Temperature on Fracture and Mechanical Properties of PCD

Marin Petrović; Declan Carolan; Alojz Ivanković; Neal Murphy

doi:10.4028/www.scientific.net/KEM.452-453.153

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 452-453Role of Rate and Temperature on Fracture and...

Role of Rate and Temperature on Fracture and Mechanical Properties of PCD

Abstract:

Polycrystalline diamond compacts (PDC) cutters are widely used in oil and gas well drilling and a different format of the same material is also used in high speed turning. During the cutting process these tools experience very high temperatures and impact loads which lead to their sudden fracture. In this work the mechanical and fracture properties of two different grades of PCD test specimens, i.e. the Young’s modulus and fracture toughness, are measured under a range of test conditions such as temperature and loading rate, which correspond to the actual drilling conditions. The fracture is found to propagate in a highly dynamic manner, where the results show the examined properties of PCD specimens to vary with the loading rate and temperature. The study performed leads to a greater understanding of PCD behaviour, and aims to provide guidance for improved material design.

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Periodical:

Key Engineering Materials (Volumes 452-453)

Pages:

153-156

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.452-453.153

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Online since:

November 2010

Authors:

Marin Petrović, Declan Carolan, Alojz Ivanković, Neal Murphy

Keywords:

Fracture Toughness, Loading Rate, PCD, Temperature, Young's Modulus

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References

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