In-situ Observation of Point Defect and Precipitate Evolvement of CLAM Steel under Electron Irradiation
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2013年第5期
论文作者：Yong Xin Tongda Ma Xin Ju Jie Qiu
文章页码：467 - 470
摘 要：<正>The point defect and precipitate evolution of China low activation martensitic steel（CLAM） under electron beam irradiation were characterized by high voltage electron microscopy.The process was recorded in-situ on electronsensitive films.The irradiation dose rate was 1.78×10-3 dpa/s and the highest dose was 2.12 dpa/s.Irradiation introduced dislocation loops into the sub-grain,which increased density when the irradiation dose was increased from 0.53 dpa to 1.59 dpa at 723 K.The precipitate,found to be an M6C type,was irradiated at 773 K at the [011]plane direction.The precipitate morphology and structure were unchanged when the irradiation dose was increased to 2.12 dpa.Compared with the irradiation at 723 K in the sub-grain,no other defects were generated at the nearby grain boundary at 773 K.
Yong Xin1，Tongda Ma2，Xin Ju1，Jie Qiu3
1. Department of Physics,University of Science and Technology Beijing2. General Research Institute for Nonferrous Metals3. Institute of Nuclear and New Energy Technology,Tsinghua University
摘 要：<正>The point defect and precipitate evolution of China low activation martensitic steel（CLAM） under electron beam irradiation were characterized by high voltage electron microscopy.The process was recorded in-situ on electronsensitive films.The irradiation dose rate was 1.78×10-3 dpa/s and the highest dose was 2.12 dpa/s.Irradiation introduced dislocation loops into the sub-grain,which increased density when the irradiation dose was increased from 0.53 dpa to 1.59 dpa at 723 K.The precipitate,found to be an M6C type,was irradiated at 773 K at the [011]plane direction.The precipitate morphology and structure were unchanged when the irradiation dose was increased to 2.12 dpa.Compared with the irradiation at 723 K in the sub-grain,no other defects were generated at the nearby grain boundary at 773 K.
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