High load sliding wear behavior of Fe-base NOREM 02 hardfacing alloy

摘要

The effects of temperature, contact stress, andenvironment on the sliding wear behavior of Fe-base NOREM 02hardfacing alloy was investigated. At room temperature in air,NOREM 02 did not show galling even up to the contact stress of3Oksi owing to its low stacking fault energy and #gamma# ->#alpha#'' strain-induced phase transformation. At 300 deg C in air,however, NOREM 02 showed galling even under the contact stressof 15 ksi. It was considered to be due to the increase of stackingfault energy with temperature and undevelopment of strain-induced phase transformation. In the mean time, it was confirmedthat water environment increases the wear resistance of NOREM02 owing to the lubrication effect and enhancing effect on theformation of Fe-oxide layers which prevent direct metal-to-metalcontact between asperities.