Friction and wear behaviors of WC/Co cemented carbide tool materials with different WC grain sizes at temperatures up to 600 °C

► The friction and wear behaviors of WC/Co alloys with different WC grain sizes were evaluated up to 600 °C. ► The friction coefficient and wear rate of these alloys were quite sensitive to the test temperature. ► The carbide with the smallest WC grain size showed improved wear resistance at temperature up to 600 °C. ► The surface features of these alloys were related to the chemical transformation during sliding tests.