In-situ SANS studies of nano-scale (V,W)Cx and (Ti,W)Cx precipitation in V- and Ti-doped hard metals
Cemented carbides consist of hard WC grains in a ductile Co matrix and are widely used materials in cutting applications requiring high hardness. The hardness of the cemented carbide increases with decreasing WC grain size. In order to develop cemented carbides with enhanced mechanical properties, our current research interest is oriented on the refinement of WC particle size using grain growth inhibitors, e.g. Ti and V. The grain growth inhibition is driven by the formation of nano-scale (V,W)C or (Ti,W)C during sintering. We here propose in-situ small angle neutron scattering (SANS) experiments on the D33 beamline to gain a better understanding of the temperature- and time-dependent evolution of (V,W)C and (Ti,W)C precipitates in V- and Ti-doped cemented carbides. Since no experimental study has been able to characterize nanostructure evolution in related materials in in-situ conditions, we expect a valuable scientific output from the successful experiments that will also show the applicability of in-situ SANS for solving industry-related problems.
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Peter Hedström; CUBITT Robert; LIU Jianling and Ahmet Bahadir Yildiz. (2020). In-situ SANS studies of nano-scale (V,W)Cx and (Ti,W)Cx precipitation in V- and Ti-doped hard metals. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.1-04-168
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