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Numerical simulation of continuous roll-casting process of aluminum alloy XIE Shui-sheng(谢水生), YANG Hao-qiang(杨浩强), HUANG Guo-jie(黄国杰) State Key Laboratory for Fabrication and Processing of Non... of continuous roll-casting process (CRP) of aluminum alloy, the investigations of the flow behavior within the metal pool, the heat transfer condition between roll and strip, the pouring temperature......
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土系La0.8-xGd0.2MgxNi3.3Co0.3Al0.1(x=0~0.4)储氢合金,并在氩气和1273K下对铸态合金进行退火处理,系统研究了用Mg部分替代La元素对合金微观组织和电化学性能的影响规律.合金相结构分析表明,合金组织主要由Pr5Co19型,PuNi3型,Ce2Ni7型和Ca-Cu5型相组成,随Mg含量增加,主相Pr5Co19型相含量先增加后减少,当x=0.15时达到最大值88.23%(质量分数).电化学测试分析表明,随Mg含量的变化,合金电极最大放电容量和容量保持率均呈先增加后减小的规律,当x=0.15时,合金电极放电容量达到最大值377.9mAh/g,经100次充放电循环后其电极容量的保持率S100为90.2%,具有较好的电化学综合性能.关键词:A5B19型La-Mg-Ni系储氢合金;微观组织;储氢性能;电化学性能;......
Effects of sputtering conditions on electrochemical behavior and physical properties of Ni-Mo alloy electrode HUANG Jin-zhao(黄金昭)1, XU Zheng(徐 征)1, LI Hai-ling(李海玲)2, KANG Guo-hu(亢国虎)2, WANG Wen... Solar Energy Research Institute, Beijing 100083, China Received 15 November 2005; accepted 2 March 2006 Abstract: Sputtering method was used to prepare Ni-Mo alloy electrodes for hydrogen......
of Sn-15%Pb. Later, JIANG et al[17], GUO et al [18] and CUI and YANG[19] researched fractal dimensions of microstructure morphology in Al alloy and Mg alloy. However, these researches do not involve...-Mg alloy prepared by the rheo-diecasting process [J]. Acta Mater, 2007, 55: 1589-1598. [13] SUN Li-ling, DONG Lian-ke, ZHANG Jing-hua. Application of fractal theory on the study of solid-liquid......
Microstructure evolution of semi-solid 2024 alloy during two-step reheating process WANG Shun-cheng(王顺成), LI Yuan-yuan(李元元), CHEN Wei-ping(陈维平), ZHENG Xiao-ping(郑小平) School of Mechanical... and applied to perform reheating experiments on the semi-solid 2024 alloy billet. In this process, the semi-solid billet was firstly heated over liquidus temperature and then isothermally held at solid......
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Substructure of recovered Ti-23Nb-0.7Ta-2Zr-O alloy XING Hui(邢 辉), GUO Wen-yuan(郭文渊), SUN Jian(孙 坚) School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240...; Abstract: Ti-23Nb-0.7Ta-2Zr-O (TNTZO, molar fraction, %) alloy is a newly developed multifunctional β-type titanium alloy. This alloy was reported to deform via......