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金属学报  1997, Vol. 33 Issue (2): 213-221    
  论文 本期目录 | 过刊浏览 |
电子束辐照诱导Al_2Ni_3相的析出(英文)
柳得橹;H.Hashimoto
北京科技大学材料物理系;北京;100083;DepartmentofMechanicalEngineering;OkayamaUniversityofScienceJapan
Al_2Ni_3 PRECIPITATION INDUCED BY ELECTRON BEAM IRRADIATION
D.L.Li.(Department of Materials Physics; University of Science and Technology Beijing; Beijing100083; China)H.Hashimoto(Department of Mechanical Engineering; Okayama University of Science; Japan)
引用本文:

柳得橹;H.Hashimoto. 电子束辐照诱导Al_2Ni_3相的析出(英文)[J]. 金属学报, 1997, 33(2): 213-221.
, . Al_2Ni_3 PRECIPITATION INDUCED BY ELECTRON BEAM IRRADIATION[J]. Acta Metall Sin, 1997, 33(2): 213-221.

全文: PDF(5117 KB)  
摘要: 用400kV透射电镜观察由N9R及2H马氏体组成的淬火Cu-11.2A1-2.9Ni合金样品时,发现大量弥散相因电子束辐照而析出电子衍射分析证实析出相为Al2Ni3.暗场像体视测量与高分辨显微术研究表明,辐照诱导析出不仅是表面反应.Al2Ni3粒子挥优在晶体缺陷及马氏体界面处析出.延长辐照时间,拆出相长大并粗化.
关键词 Cu-Al-Ni合金电子显微术辐照缺陷Al_2Ni_3析出相马氏体结构    
Abstract:An as-quenched Cu-11 .2%(wt)%Al-2.9 (wt)%Ni alloy specimen. which consists ofordered N9R and 2H structure martensites, was examined by a 400 kV TEM. Largenumbers of dispersive precipitates in the specimen are induced by the electron beam irradiation, These fine particles are identlfied as AI2Ni3 phase by electron diffraction.The stereoscopic measurement of the dark field TEM images combined with HREMstudy showed that this irradiation induced precipitation is not only a surface reaction.AIzNi3 particles precipitate preferentially at crystalline defects and interfaces of themartensitic matrix. When duration of the electron beam irradiation lengthens. growthand coarsening of the precipitates are also observed.
Key wordsCu-Al-Ni alloy    electron microscopy    irradiation effects    precipitation of Al_2Ni_3    martensitic structure
收稿日期: 1997-02-18     
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