A New Method for Evaluating the Indentation Toughness of Hardmetals
This paper proposes a new method of evaluating the indentation toughness of hardmetals using the length of Palmqvist cracks (C) and Vickers indentation diagonal size (di).Indentation load “P” is divided into two parts: Pi for plastic indentation size and Pc for Palmqvist cracks.Pi depends upon the square of the indentation size (di2) an