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) method is also investigated and appears to be very promising to follow the skin movement in the casting. Key words: oxide skin defects; two-phase flow; finite element modeling; Arbitrary Eulerian... reduce the possibility of entrapping oxide skins into the part. Nevertheless, oxide film related defects are difficult to avoid in metal injection processes. These defects may take different forms......
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Optimization on springback reduction in cold stretch forming of titanium-alloy aircraft skin HE De-hua(何德华), LI Dong-sheng(李东升), LI Xiao-qiang(李小强), JIN Chao-hai(金朝海) School of Mechanical...-alloy aircraft skin to determine process parameters and to reduce springback. In the optimization model, a mathematical formulation of stress difference was developed as an indicator of the degree......
for multi-stage stretch forming of complex shapes to prevent the occurrence of deformation defects. 4) Future work may include more complicated aircraft skin that concerns more comprehensive strain... Process design for multi-stage stretch forming of aluminium alloy aircraft skin HE De-hua(何德华), LI Xiao-qiang(李小强), LI Dong-sheng(李东升), YANG Wei-jun(杨伟俊) School of Mechanical Engineering......
Effect of Double Oxide Film Defects on Mechanical Properties of As-Cast C95800 AlloyXin-Yi Zhao1,2,Zhi-Liang Ning1,2,Fu-Yang Cao1,2,Shan-Guang Liu1,2,Yong-Jiang Huang1,2,Jing-Shun Liu3,Jian-Fei... Science and Engineering, Inner Mongolia University of Technology摘 要:The morphology of double oxide film defects and their influence on the tensile mechanical......
that the skin layer is related to a succession of complex processes before the filling process finished. Pore clusters or laminar defects would be formed in skin layers during solution treatment and cause...Skin layer of A380 aluminium alloy die castings and its blistering during solution treatmentZihao Yuan1,Zhipeng Guo1,S.M.Xiong1,21. School of Materials Science and Engineering, Tsinghua University2......
热轧钢板红锈氧化铁皮形成机制及改进措施左军1,常军2,刘勇3,张开华2,杨金成2,李卫平3(1.四川省攀枝花市 攀枝花钢铁研究院2.攀枝花钢铁研究院,四川攀枝花 6170003.攀枝花新钢钒股份有限公司,四川攀枝花 617067)摘 要:在现场取样进行红锈氧化铁皮的宏观形貌,微区化学成分,组织结构及O/Fe质量百分含量的测试分析,发现钢中的Si与Fe生成的2FeO·SiO2化合物是形成红锈的主要原因.红锈氧化铁皮中的O/Fe质量百分比由内表面向外表面逐渐增加,内表面结构比较疏松,外表面结构比较致密.通过采用降低......
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Role of Double Oxide Film Defects in the Formation of Gas Porosity in Commercial Purity and Sr-containing Al AlloysBatool Farhoodi,Ramin Raiszadeh,Mohammad-Hasan GhanaatianDepartment of Metallurgy and Materials Science and Mineral Industries Research Centre,Shahid Bahonar University of Kerman摘 要:The role of double oxide film(bifilm) defects......
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