Notch Fatigue Tests on a Hybrid Alloy PM Steel

摘要

Fatigue testing of PM steels, which can be considered to exhibit some ductility on both the macroscopic and microscopic scales, can be hampered by unpredictability of results due to inappropriate specimen configuration. This paper demonstrates the use of a V-notch specimen configuration in fatigue that produces fatigue data with a minimum of scatter. The effects of compacting pressure (and hence porosity) and heat treatment were investigated. The testing has been done as a proof of approach rather than a fundamental investigation of fatigue.