| 强流脉冲电子束辐照诱发单晶铝表层的微观结构状态 |
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| 引用本文： | 关庆丰,顾倩倩,彭冬晋,李艳,刘洋,林雪,李秀颖.强流脉冲电子束辐照诱发单晶铝表层的微观结构状态[J].松辽学刊,2010,31(1):1-5. |
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| 作者姓名： | 关庆丰 顾倩倩 彭冬晋 李艳 刘洋 林雪 李秀颖 |
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| 作者单位： | [1]江苏大学材料科学与工程学院,江苏镇江212013 [2]吉林师范大学物理学院,吉林四平136000 |
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| 基金项目： | 国家自然科学基金项目，江苏大学高级人才基金项目 |
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| 摘 要： | 利用Nadezhda-2强流脉冲电子束（HCPEB）装置分别在1J／cm^2和4J／cm^2能量密度下对单晶铝进行了辐照处理．1J／cm^2能量密度下，表面处于未熔化状态，表面形成互相平行的带有中脊线的挛晶结构；而4J／cm^2能量密度辐照下，在表面熔化的同时则没有变形条带出现．透射电镜分析表明，1J／cm^2能量密度HCPEB辐照能够在单晶铝表层诱发孔洞甚至堆垛层错四面体这种通常在高层错能金属中不能形成的空位簇缺陷，并且很少观察到位错的出现，也观察不到位错滑移的痕迹；4J／cm^2能量密度辐照单晶铝表层则是位错滑移引起的位错缠结结构为主．
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| 关 键 词： | 强流脉冲电子束 微观结构 单晶铝 变形 空位簇缺陷 |
Microstructures in Single-crystal Aluminum Induced by High-current Pulsed Electron Beam |
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| GUAN Qing-feng,GU Qian-qian,PENG Dong-jin,LI Yan,LIU Yang,LIN Xue,LI Xiu-ying.Microstructures in Single-crystal Aluminum Induced by High-current Pulsed Electron Beam[J].Songliao Journal (Natural Science Edition),2010,31(1):1-5. |
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| Authors: | GUAN Qing-feng GU Qian-qian PENG Dong-jin LI Yan LIU Yang LIN Xue LI Xiu-ying |
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| Institution: | GUAN Qing-feng1,GU Qian-qian1,PENG Dong-jin1,LI Yan1,LIU Yang1,2,LIN Xue1,LI Xiu-ying1 (1.School of Material Science , Engineering,Jiangsu University,Zhenjiang 212013,China,2.College of Physics,Jilin Normal University,Siping 136000,China) |
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| Abstract: | In order to investigate high-speed deformation mechanism of pure aluminum,we have irradiated the specimens of single-crystals aluminum by using a Nadezhda-2 HCPEB device with 1 J/cm2 and 4 J/cm2 energy density,respectively.For 1 J/cm2 energy density and five pulses,it was found that the twin lamellae feature,which were regularly parallel with a median ridge in it,present on the irradiated surface,and no melting evidence was associated to the twins formation.In the case of 4 J/cm2 energy density,the surface ... |
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| Keywords: | high current pulsed electron beam microstructure single-crystal aluminum deformation vacancy defect cluster |
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