| Title |
Research Paper / Mechanical Behavior : High Load Sliding Wear Behavior of Fe-Base NOREM 02 Hardfacing Alloy |
| Authors |
최세종(Se Jong Choi),최진호(Jin Ho Choi),김준기(Jun Ki Kim),김학수(Hak Su Kim),문주현(Ju Hyun Mun),이덕현(Duck Hyun Lee),김선진(Seon Jin Kim) |
| Abstract |
The effects of temperature, contact stress, and environment on the sliding wear behavior of Fe-base NOREM 02 hardfacing alloy was investigated. At room temperature in air, NOREM 02 did not show galling even up to the contact stress of 30ksi owing to its low stacking fault energy and γ → α` strain-induced phase transformation. At 300℃ in air, however, NOREM 02 showed galling even under the contact stress of 15ksi. It was considered to be due to the increase of stacking fault energy with temperature and undevelopment of strain-induced phase transformation. In the mean time, it was confirmed that water environment increases the wear resistance of NOREM 02 owing to the lubrication effect and enhancing effect on the formation of Fe-oxide layers which prevent direct metal-to-metal contact between asperities. |