Study on Banded Structure in Low Carbon Vessel Plate for Nuclear Power Plant
In this paper,the role of the pearlite-banded structure on fatigue crack growth behavior was investigated on carbon vessel plate material SA516,which is commonly used in the nuclear power plants.Along pearlite-banded orientation,in situ fatigue tests indicate that the crack initiated and propagated in the ferrite and then extended along the ferrite-pearlite interface when it met pearlitic colony.For comparison,the cyclic loading was also carried out perpendicular to the banding direction of the microstructure,and an intense crack branching was observed which led to fatigue crack retardation.Besides,the orientation perpendicular to banded pearlite in the investigated ferrite-pearlite steel was found to have a lower fatigue crack growth rate.
Banded structure Nuclear power Pressure vessel In situ analysis Pearlitic colony
Fei Xue Zhifeng Luo Weiwei Yu Zhaoxi Wang Lu Zhang
Suzhou Nuclear Power Research Institute, Suzhou 215004, China Suzhou Nuclear Power Research Institute, Suzhou 215004, China;School of Aerospace, Tsinghua Universi
国际会议
重庆
英文
1763-1766
2010-12-11（万方平台首次上网日期，不代表论文的发表时间）