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, the corroded S will become cathodic to α(Al). This phenomenon of electrode conversion from anode to cathode is also found in T1(Al2CuLi) precipitate in Al-Li alloy[9], which contains active element Li and noble..., 1979, 19(4): 225-229. [9] LI Jin-feng, LI Shi-chen, ZHENG Zi-qiao, CHEN Wen-jing, ZHAO Xu-shan. Simulation on function mechanism of T1(Al2CuLi) precipitate in localized corrosion of Al-Cu-Li alloy......
Al-Li合金锭在熔炼时的熔体保护及加Li方法何梅琼西南铝业(集团)有限责任公司摘 要:Li是一种化学活性非常强的金属,容易与Al熔体中的N2,H2,O2等产生化学反应生成有害的化合物,因此熔体的保护是十分重要的.Li的加入也是熔炼Al-Li合金的一大难题.本文在整理大量的文献资料和试验数据的基础上提出了Al-Li合金锭在熔炼时熔体的各种保护及加Li的方法,供同行们参考.关键词:Al-Li合金锭熔炼;熔体保护;加Li方法;熔炉材料选择;......
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铝锂合金高强化成分设计李劲风1,2,马云龙3,陈永来4,张绪虎4,马鹏程4,郑子樵11. 中南大学材料科学与工程学院2. 中南大学教育部有色金属材料与工程重点实验室3. 宇航系统工程研究所4. 航天材料及工艺研究所摘 要:总结了铝锂合金高强化成分设计的发展过程,综合了课题组主合金元素Cu,Li含量,微合金元素Mg,Ag,Zn及稀土(RE)元素等对Al-Cu-Li系铝锂合金力学性能及析出相影响规律的研究结果.铝锂合金中Cu/Li比例较低时有利于时效时δ′相(Al3Li)析出,但不利于强度的提高;而Cu/Li比增加则有利于时效时T1相(Al2CuLi)及θ′相(Al2Cu)析出,从而有效提高铝锂合金的强度.微合金化元素Mg能有效促进T1相形核析出,加速铝锂合金时效响应速度,提高T1相析出密度,进而提高铝锂......
还原过程伴随着锂铝合金的成核过程,锂在铝电极上的嵌入过程平缓,稳定.恒电流充放电循环实验发现,首次循环的库仑效率很低,这主要归结于Li-Al合金对锂元素的持留能力.通过XRD和SEM表征了充放电前后铝电极的物相组成和表面形貌.计时电流实验发现,锂原子嵌入铝电极中形成a-Li-Al合金的过程受锂在铝基体内的扩散步骤控制,且该扩散系数为1.8×10-10 cm2/s. 关键词:熔盐；铝电极；循环伏安... that the incorporation of lithium into aluminum for the formation of a-phase Li-Al alloy is limited by its diffusion rate, with a measured diffusion coefficient of 1.8×10-10 cm2/s. Key words: molten salt......
of the induction brazed joint of magnesium alloy AZ31B with an Al-based filler metal [J]. Materials and Design, 2012, 37: 465-469. [11] MIAO Y G, HAN D F, YAO J Z, LI F. Effect of laser offsets... of layers was increased with increasing the operating temperature. According to the results, diffusion of aluminum atoms into magnesium alloy was more and the interface movement towards the Al alloy......
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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......
; 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......
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