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High-temperature relaxations in WC-Co have been investigated by mechanical spectroscopy. A broad relaxation peak P4 visible in frequency scans is attributed to WC-WC grain boundary sliding. This peak can be deconvoluted into four relaxation peaks with a strength that depends on temperature. The variations of their relative relaxation strength variations can be attributed to structure changes in the...
The high-temperature behaviour of Ti(C,N)-Mo 2 C-Co cermets is investigated by three point bend tests in order to describe the deformation mechanisms that appear during their use in cutting tool applications. The results of constant strain rate tests and activation energy measurements by creep tests suggest a description of the mechanical behaviour in three temperature domains: elastic and...
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