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Details of Grant 

EPSRC Reference: GR/R99300/01
Title: A study into the plasticity of polycrystalline cutting tool materials
Principal Investigator: Harris, Dr T
Other Investigators:
Researcher Co-Investigators:
Dr E Brookes
Project Partners:
De Beers Industrial Diamonds
Department: Mechanical Engineering
Organisation: University of Glasgow
Scheme: First Grant Scheme Pre-FEC
Starts: 01 August 2002 Ends: 31 July 2005 Value (£): 114,816
EPSRC Research Topic Classifications:
Materials Characterisation
EPSRC Industrial Sector Classifications:
Aerospace, Defence and Marine Manufacturing
Construction Transport Systems and Vehicles
Related Grants:
Panel History:  
Summary on Grant Application Form
SummaryDescribe the proposed research in about 2DC words.This programme of research aims to uncover the deformation mechanisms of polycrystalline cutting tool materials by understanding the interaction of the hard ceramic phases deformed during manufacture. This will be achieved by utilising a novel soft impressor technique to study the plastic deformation of polycrystalline cutting tool materials. Using a variety of temperatures and pressures similar to the normal working environment of these cutting tool materials, the brittle-ductile transition temperature, impression creep and high temperature fatigue characteristics of the polycrystalline materials will be identified.To complement this information, single crystal materials such as diamond, single crystal cubic boron nitride, titanium carbide and titanium nitride will also be studied. The information provided by the hard ceramic phases of the polycrystalline cutting tool materials will be invaluable in determining the most probable mechanisms of deformation at these temperatures and pressures.Modelling of maximum shear stresses beneath impressions and indentations will also be conducted to identify the point at which dislocation motion will ocuur for given applied stresses.
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Organisation Website: http://www.gla.ac.uk