|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||High Temperature Corrosion of Structural Materials
||J-3: Effects of Boron and Copper on Pitting Corrosion of 9Cr-1Mo Weld Metal
||Byungrok Moon, Sungyong Ahn, Namhyun Kang, Ikmin Park, Kwangho Kim, Kyungmox Cho
|On-Site Speaker (Planned)
9Cr-1Mo steel is widely used as a structural material of current power plants due to excellent oxidation resistance and creep property. Welding is an inevitable process in order to fabricate structural materials in power generation industries. Due to alloy systems and welding characteristics, there exists a delta-ferrite in the weld metal with rapid cooling from liquidus temperature. After post-weld heat treatment, M23C6 precipitate coarsely grows, which lead to chromium depletion at delta-ferrite and tempered martensite interface, result in pitting corrosion occurring. This paper presents the effect of boron and copper on the pitting corrosion of 9Cr-1Mo weld metal.
||Planned: Supplemental Proceedings volume