Untersuchungen über die beeinflussung des gefüges karbidischer gusseisen bei abrasiver verschleissbean-spruchung

In this paper the mechanism of abrasive wear of white cast irons is examined on the microstructural scale. The Fe-C-Cr-Mo, Fe-C-Cr-Ni and Fe-C-V-Cr alloys were tested. The results of the test have shown that abrasive wear of white cast iron is the result of wear of the microstructural components. Under high-stress abrasion the carbide can be deformed, scratched, broken and uprooted. The matrix shows cutting and deformation work hardening and martensitic transformation. The abrasion behaviour of alloys with different microstructural matrices is markedly influenced by mechanisms of wear. During abrasion the austenitic matrix can undergo the form, the hardness, the kinetic energy and the pressure of abrasive particles.