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亚共晶Al-Si合金细化及变质的研究现状与发展 陈延红1,严密1 (1.浙江大学材料科学与工程系,浙江 杭州 310027) 摘要:本文介绍了亚共晶Al-Si常用的细化剂和变质剂,分析和概括了现有的一些细化理论,如"包晶反应","颗粒理论","晶体增殖理论","超形核理论",及变质理论,并简要讨论了化学细化法制备半固态亚共晶Al-Si合金. 关键词:亚共晶Al-Si合金; 细化剂; 变质剂; 细化理论; 半固态; Hypoeutectic Al-Si Alloys; Grain Refiner Modifier; Refining Mechanism; Semi-Solid; [全文内容正在添加中] ......
Toward the development of Mg alloys with simultaneously improved strength and ductility by refining grain size via the deformation processZhi Zhang1,Jing-huai Zhang1,Jun Wang2,Ze-hua Li1,Jin-shu... simultaneously.Refining grain size via the deformation process based on the grain boundary strengthening and the transition of deformation mechanisms is one of the feasible strategies to prepare Mg......
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(wt%) grain refiner on the refining performance and modification of A356 alloy was investigated using optical microscope(OM).The morphology and crystal structure of ternary Al-Ti-Sr phases... the grain refining efficiency of A356 alloy.The ternary Al-Ti-Sr phases co-exist in two morphologies,i.e.,blocky-like phase and surround-like phase,besides,which both have the same chemical composition......
Trans. Nonferrous Met. Soc. China 29(2019) 1375-1382 Effect of refining processes on inclusions and mechanical properties of cast Al-2Li-2Cu-0.2Zr alloy Mian RONG1, Liang ZHANG1, Guo-hua WU1, Wei-wei... Abstract: The effect of different refining processes on inclusions and mechanical properties of cast Al-2Li-2Cu-0.2Zr alloy was investigated, including two-stage hexachloroethane (C2Cl6) refining......
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RESEARCH ON AS-CAST GRAIN REFINING TECHNOLOGY BY INOCULATING CLEAN STEEL WITH TITANIUM OXIDE M.L.Wang1,P.Zhao1,Y.G.Wang2,G.G.Cheng2,X.E.Yang2,L.Y.Wang2,Y.L.Li2 (1.Central Iron and Steel Research Institute, Beijing 100081, China;2.University of Science and Technology Beijing, Beijing 100083, China) Abstract:Precipitation condition and nucleation of Ti2 O3 during solidification of clean steel......
), the grain size is comparable with that of the previous LAZ1110+Sc. This result confirms the role of Sc in grain refining as it impedes the grain growth tendency in the presence of Be. None of the above... up more energy. By this procedure, the final stage of annealing leads to recrystallization with fine grains. 3.2 Strengthening and grain refining by solid solution treatment After solution treatment......
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the segregation for Ti, i.e. Ti-rich phase is detected. A spray refining process was carried out to reduce the impurity contents of Al and O in the prepared alloys. The Al content drops from 4.27% to 1.86%, and the O content drops from 2.10% to 0.91% after the refining process. Key words: V-Ti-Fe master alloys; metallothermic reduction method; recovery rates; refining process 1 Introduction As a kind......