北京科技大学学报Issue(2)：194-199,6.DOI:10.13374/j.issn1001-053x.2014.02.009
RPV模拟钢中相界面处原子的偏聚特征
Atomic segregation characteristics on phase boundaries in RPV model steel
摘要
Abstract
The segregation characteristics of Ni, Mn, P and C atoms at the phase boundaries of AlN/α-Fe matrix, Cu-rich precip-itate/α-Fe matrix and AlN/Cu-rich precipitate in reactor pressure vessel ( RPV ) model steel were investigated by atom probe tomo-graphy ( APT) . RPV model steel specimens were heat treated at 890℃ for 0.5 h followed by water quenching and aging at 500℃ for 20 h. The results demonstrate that Ni, Mn, C and P atoms do not segregate to the Cu-rich phase/AlN phase boundary, only segregate to the AlN/α-Fe and Cu-rich nanophase/α-Fe phase boundaries, and their segregation characteristics have no significant differences. It is also observed that Mn has a larger segregation tendency than Ni, and C has a larger than P at both different phase boundaries of Cu-rich nanophase/α-Fe and AlN/α-Fe.关键词
压水堆/压力容器/铁素体钢/相界面/偏聚/氮化铝Key words
pressurized water reactors/pressure vessels/ferritic steel/phase boundaries/segregation/aluminum nitride分类
矿业与冶金引用本文复制引用
冯柳,周邦新,刘文庆,王均安,王晓姣..RPV模拟钢中相界面处原子的偏聚特征[J].北京科技大学学报,2014,(2):194-199,6.基金项目
国家重点基础研究发展规划资助项目(2011CB610503) （2011CB610503）
国家自然科学基金重点资助项目(50931003) （50931003）
上海市重点学科建设资助项目(S30107) （S30107）
