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process, Mg is preferentially dissolved and noble Cu is enriched in the remnants. This makes S become cathodic to α(Al) and leads to anodic dissolution and corrosion on the alloy base at its periphery at a later stage. Key words: localized corrosion mechanism; Mg-containing precipitate; Al alloy  ......
. The mechanical and wear properties of hybrid aluminium metal matrix composites were investigated. Mica and SiC ceramic particles were incorporated into Al 356 alloy by stir-casting route. Microstructures... alloy-based composites (mainly Al alloy/SiC composites). The metal matrix composites (MMCs) are slowly replacing the general light metal alloys such as aluminium alloy in different industrial......
; microstructure; low frequency electromagnetic casting; high-strength Al alloy 作为航空, 航天一些器件主要结构材料的超高强铝合金,因其强度和韧性很难协调, 制约了其更为广泛的应用. 采用特殊的工艺, 加入更多的强化合金元素来提高合金的强度, 又不降低合金的韧性, 已成为研究开发超高强高韧铝合金的热点[1]. 在... field on microstructures of semi-continuously cast high-strength Al alloy YAN Ying1, ZHANG Cai-bei1, CUI Jing-lei1, CUI Jian-zhong2 (1. College of Science, Northeastern University, Shenyang 110004......
含量略高于1号和2号铸锭的Al含量,这是由两方面的原因造成的:1) 3号铸锭实验原料配比中单质铝的比例(Al-V合金中Al质量分数为46%)低于另外两个实验;2) 3号铸锭熔炼过程中精炼区及凝固区电子束电流相应有所降低. 表3 TC4铸锭化学成分对比 Table 3 Chemical composition comparison of TC4 alloy ingot 图...司的ICP-7300V电感耦合等离子发射光谱仪分析Al,V,Fe含量. 表1 TC4合金EB熔炼工艺参数 Table 1 EB melting process parameters of TC4 alloy 2 结果与讨论 2.1 熔炼工艺对化学成分的影响 实验1获得的TC4合金锭规格为1327 mm×255 mm×623 mm,BMO-1电子束冷......
J. Cent. South Univ. Technol. (2010) 17: 881-887 DOI: 10.1007/s11771-010-0571-8 Deformation simulation of low-temperature high-speed extrusion for 6063 Al alloy WANG Meng-jun(王孟君)1, 2, HE Zhao... Heidelberg 2010 Abstract: The hot compression test of 6063 Al alloy was performed on a Gleeble-1500 thermo-simulation machine, and the forming of 6063 rod extrudate in low-temperature high-speed extrusion......
泡沫Al合金的压缩性能及其能量吸收 舒光冀1,何德坪1,王斌2 (1.东南大学材料科学与工程系,南京,2l0096;2.江苏淮海投资有限公司工作,南京,210005) 摘要:研究了泡沫纯铝和泡沫AlSi7Mg0.45在单向压缩条件下的应力-应变(σ-ε)曲线,分析了它们的变形行为,并讨论了其能量吸收和能量吸收效率.结果表明:泡沫纯铝与泡沫Al合金的σ-ε曲线均由弹性变形段,平缓段和紧实段组成;在压缩过程中,泡沫纯铝的骨架变形以弯曲为主,泡沫AlSi7Mg0.45的骨架变形主要由局部断裂产生;在相同孔隙率下,泡沫AlSi7Mg0.45的能量吸收大于泡沫纯铝;能量吸收效率与应变有关,存在一个峰值. 关键词:泡沫Al合金; 应力-应变曲线; 能量吸收; 能量吸收效率; 孔隙率; [全文内容正在添加中] ......
; 文献标志码:A Effect of Al content on non-dendritic microstructure of Mg-7Zn magnesium alloy FENG Kai, HUANG Xiao-feng, MA Ying, Zheng, LI Xing-peng, HAO Yuan... alloy was investigated by isothermal heat-treatment. The results indicate that the solid fractions of alloys are declined by elevated temperature when adding Al into Mg-7Zn alloy. With Al content......
of 7050 aluminum alloy during high temperature deformation [J]. Materials Science and Engineering A, 2008, 488: 64-71. 不同热变形条件下Al-Zn-Mg-Cu包铝板的组织演变 廖 斌1,吴晓东1,闫昌建1,刘 政1,纪艳丽2,曹玲飞1,黄光杰1,刘 庆1 1. 重庆大学 材料科学与工... at strain rate below 10 s-1; however, dynamic recovery and recrystallization are limited at strain rate of 30 s-1 due to shorter duration at elevated temperatures. Key words: Al-Zn-Mg-Cu alloy; Al......
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应力控制下7075-T651铝合金的疲劳断裂行为陈涛1,赵路远1,李慧1,黄俊1,2,吴玉程1,21. 合肥工业大学材料科学与工程学院2. 合肥工业大学安徽省有色金属材料与加工工程实验室摘 要:在不同应力幅下(60%σs,70%σs,80%σs,90%σs,σs为试验合金屈服强度)对7075-T651铝合金进...%σs,70%σs)下则先软化后明显硬化并趋于稳定;试验合金主要发生微孔聚集韧窝型断裂,在较高应力幅下,裂纹源位于粗大夹杂物Al7Cu2Fe和第二相MgZn2处,位错大量缠结,而在低应力幅下,裂纹源位于基体轻微撕裂处,位错形态为分散的短或长直位错线.关键词:7075-T651铝合金;显微组织;疲劳断裂行为;......