CAJ | 학술논문

为了研究中国低活化马氏体CLAM钢的辐照损伤机理,本文利用慢正电子技术研究了质子辐照CLAM钢时所产生的缺陷及其退火回复行为,发现辐照在材料中产生空位团数密度随质子注量增加而增多,而其尺度增大并不明显.辐照仅产生原子尺度的空位和空位团,400℃退火可以使缺陷很好地消除.此外分析了硅对CLAM钢辐照性能的影响,实验上没有观察到硅的添加抑制了质子辐照缺陷的产生.
위료연구중국저활화마씨체CLAM강적복조손상궤리,본문이용만정전자기술연구료질자복조CLAM강시소산생적결함급기퇴화회복행위,발현복조재재료중산생공위단수밀도수질자주량증가이증다,이기척도증대병불명현.복조부산생원자척도적공위화공위단,400℃퇴화가이사결함흔호지소제.차외분석료규대CLAM강복조성능적영향,실험상몰유관찰도규적첨가억제료질자복조결함적산생.
In order to investigate radiation damage mechanism of the China low activation martensitic (CLAM) steel, the proton radiation damage of CLAM steel and the annealing behavior of defect were probed by slow positron beam. It was found that the density of vacancies increased, and the size reached a saturation value, with increasing of irradiation fluence. The whole region of irradiated sample was only slightly damaged. Small vacancies and vacancy clusters were the dominant defects, and were recovered after annealing at 400 ℃. Besides, the effect of minor additive Si on irradiation behavior for CLAM steel was studied.The experimental results showed that additive Si can not pre-vent proton irradiation defects.