Palmqvist fracture toughness of a new wear-resistant weld alloy

(ProQuest-CSA LLC: ... denotes formulae omitted.) I. INTRODUCTION INSPIRED by the published suggestions of Ammann and Hinnuber[1,2] nearly a decade earlier in the early 1950s, Palmqvist experimented in the 1960s with the idea that surface crack lengths originating at the four corners of a Vickers hardness indentation generated by an applied load would be a measure of the critical stress intensity factor KIC, more commonly known as fracture toughness, in cemented carbides. Because the method will not work for all alloys, it is hypothesized that an alloy has to have high hardness and low tensile elongation in order for the indentation process to generate surface cracks in lieu of other deformation modes such as crumpling.