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Preparation of Ti-Al alloy sheet by electron beam physical vapor deposition MA Li(马李), HE Xiao-dong(赫晓东), SUN Yue(孙跃) Center for Composite Material, Harbin Institute of Technology, Harbin 150001... sheet with dimension of 450 mm×450 mm×0.2 mm was prepared by electron beam physical vapor deposition(EB-PVD) technology. The surface and cross-section pattern of as-deposited sample were studied by SEM......
2095 sheet[J]. Scripta Materialia, 2002, 46(5): 337?342. [5] HUANG J C, SHEN Y D, HAO N J. Characterization of electron beam welding of superplastic 8090 Al-Li alloys[J]. Materials Science... recrystallization occurs and the grain expresses equiaxed trend. The equiaxed degree increases with increasing tensile temperature and decreasing strain rate. Key words: Ti-6Al-4V alloy; laser beam welding......
Improved Corrosion Resistance of Magnesium Alloys AZ31 and AZ91HP by High Current Pulsed Electron Beam Treatment ZHOU Ji-yang1,DONG Chuang2,GAO Bo1,HAO Sheng- zhi2 (1.Department of material... treatment of magnesium alloys AZ31 and AZ91HP by a high current pulsed electron beam (HCPEB)was investigated in the present paper. The corrosion resistance of treated samples was tested in a 5% (wt......
by a ZD150-60C CV85M electron beam welder at a vacuum of 5×102 Pa. The welding direction is perpendicular to the extrusion direction of the Mg alloy sheets. The welding parameters are listed in Table 3. After welding, the joints were checked by XXQ-2005 portable X-ray detection apparatus with resolution of 0.4 mm to avoid the macrocracks. Table 3 Electron beam welding parameters of butt joint......
Ti_2AlNb基合金电子束焊接头的显微组织 张建伟1,段辉平2,梁晓波1,柯于斌2 (1.中国钢研科技集团公司,北京,100081;2.北京航空航天大学材料科学与工程学院,北京,100191) 摘要:利用透射电子显微镜和能谱,研究电子束焊接过程中Ti_2AlNb基合金显微组织演变过程以及焊缝区组成,焊后热处理对接头显微组织的影响.结果表明:焊接过程中焊缝区Al元素损失较为严重,这有利于B_2相的形成而不利于O相的形成,使得接头焊缝区主要由B_2和α_2两相组成;在随后的热处理过程中,焊缝区的B_2相转变为β相和板条状的O相,使焊缝区由α_2,O和β相组成. 关键词:Ti_2AlNb基合金; 电子束焊接; 显微组织; Ti_2AlNb based alloy; Electron beam welding; Microstructure; [全文内容正在添加中] ......
Optical Absorption Properties of Electron Beam Evaporated a-Si1-xGdx Films甘润今,张仿清,张津岩,刘国汉,陈光华摘 要:<正> Optical absorption properties of electron beam evaporated a-Si films(a-Si1-xGdx films)are studied forvarious composition x.It is shown from the experimental results that variation of chemical composition in thiskind of materials will lead......
Conductive Properties of Electron Beam Evaporated a-Si1-x Gdx Films甘润今,张津燕摘 要:<正> The properties of temperature dependence of conductivity σ of electron beam evaporateda-Si1-xGdx films which was deposited on some substrates of glass and Al-foil at a substrate temperature ofapproximately 300℃ in a background pressure about 2×10-4 Pa......
Impurities evaporation from metallurgical-grade silicon in electron beam melting processWANG Qiang, DONG Wei, TAN Yi, JIANG Dachuan, ZHANG Cong, and PENG Xu School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China摘 要:The purification of metallurgical-grade silicon (MG-Si) has been investigated during electron......
Repair welding process of friction stir welding groove defect LIU Hui-jie(刘会杰), ZHANG Hui-jie(张会杰) State Key Laboratory of Advanced Welding Production Technology, Harbin Institute...; Abstract: The groove defect formed in the friction stir welding dramatically deteriorates weld appearances and mechanical properties......
Trans. Nonferrous Met. Soc. China 24(2014) 764-769 Effect of electron beam irradiation on multi-walled carbon nanotubes Bin LI, Yi FENG, Ke-wang DING, Gang QIAN, Xue-bin ZHANG, Yan-fang LIU School... electron beam irradiation. However, when the electron energy increased to 200 keV, the nanotubes were damaged and amorphization, pits and gaps were detected. Furthermore, generating of carbon onions......