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文章编号:1004-0609(2010)10-1895-06 近液相线半连续铸造过程中A390合金初生硅的形成机理 王 娜,周志敏 (东北大学 理学院,沈阳 110004) 摘 要:采用近液相线半连续铸造技术制备A390合金坯料,对铸锭显微组织进行金相观察,采用图像分析软件Image-Pro Plus计算晶粒尺寸,研究浇注温度从高于液相线(650 ℃)100 ℃至10 ℃范围内变化对A390合金初生硅尺寸形貌的影响.结果表明:近液相线半连续铸造时,较低的浇注温度以及较均匀的温度场有利于均匀形核,同时减小熔体中Si的浓度梯度,从而消除Si原子聚集成团的条件,抑制初生硅的生长；因此,仅控制近液相线半连续铸造的工艺参数即可改善A390合金半固态坯料中初生硅尺寸形貌,这是制备过共晶铝硅合金半固态坯料的简单,可行,高效和低成本的方法. 关键词:A390......
Trans. Nonferrous Met. Soc. China 20(2010) s754-s757 Microstructure and mechanical properties of rheo-diecasted A390 alloy ZHAO Jun-wen(赵君文)1, WU Shu-sen (吴树森)2 1. School of Materials... and Technology, Wuhan 430074, China Received 13 May 2010; accepted 25 June 2010 Abstract: The microstructure and mechanical properties of the rheo-diecasting (RDC) A390 alloy under as-cast and T6 heat......
) by the dissolution of aluminum phase from the A356 solid alloy and by subsequent diffusion solidification[4]. Fig.6 Effect of amount of addition of solid alloy on microstructure of A390 slurry: (a) 50 g A390; (b... Semi-solid processing of hypereutectic A390 alloys using novel rheoforming process M. TEBIB1, J. B. MORIN1, F. AJERSCH2, X. GRANT CHEN1 1. Université du Québec à Chicoutimi, Chicoutimi, QC, G7H......
Trans. Nonferrous Met. Soc. China 27(2017) 2529-2538 Characterization of A390 aluminum alloy produced at different slow shot speeds using vacuum assisted high pressure die casting Wen-bo YU1,2, Zi... properties of high pressure die cast A390 alloy at different slow shot speeds were evaluated. Plate-shaped specimens of hypereutectic A390 aluminum alloy were produced on a TOYO BD-350V5 cold chamber die......
graded components that has been developed in recent years. The functionally graded cylindrical shape component with a radial gradient, e.g. the first alloy (A390) with high wear resistance on the surface... was obtained at 860 °C and 35 s decanting time with a width of 500 μm. Also, the wear resistance test was performed to measure and compare the surface wear resistance to the core. Key words: A390 alloy......
Trans. Nonferrous Met. Soc. China 29(2019) 931-940 Effect of ECAP on microstructure and tensile properties of A390 aluminum alloy Esmaeil DAMAVANDI, Salman NOUROUZI, Sayed Mahmood RABIEE, Roohollah..., mechanical properties, and fracture surface of samples. 2 Experimental The alloy used in the present study was the as-cast A390 aluminum alloy. The chemical composition of A390 alloy is presented in Table 1......
,A390基体的腐蚀形貌为晶间腐蚀和剥蚀. 关键词:铝合金；复合涂层；激光熔覆；磨损行为；耐蚀性能 中图分类号:TN 249；TB 331 文献标志码:A Wear behavior and corrosion resistance of NiCrAl/TiC composite coating on aluminum alloy by laser... to improve the frictional wear behavior and corrosion resistance of aluminum alloy, NiCrAl/TiC composite coating was fabricated on A390 aluminum alloy by laser cladding. The phase constitution......
> Abstract: A hypereutectic aluminum-silicon alloy with content of 17%Si, designed as A390, was modified. The change of microstructure was identified by optical microscopy... Transformation of microstructure after modification of A390 alloy ZHANG Ying(张英)1, 2, YI Dan-qing(易丹青)1, LI Wang-xing(李旺兴)2, REN Zhi-sen(任智森)2, ZHAO Qun(赵群)2, ZHANG Jun-hong(张俊红)2 1. School......
时效处理对A390挤压态合金组织及性能的影响李史星,苗艳伟洛阳麦达斯铝业有限公司摘 要:文章主要研究时效处理对A390合金组织,硬度等力学性能的影响,以便最终提高材料的硬度等力学性能.关键词:A390合金;时效处理;显微组织;布氏硬度;力学性能;......
Precipitate-Accommodated Plasma Nitriding for Aluminum Alloys Patama Visittipitukul1,Hideyuki Kuwahara2,Tatsuhiko Aizawa3 (1.Department of Metallurgical Engineering, Chulalongkorn University... the strength and wear resistance of aluminum alloy parts in automotives. Long duration time as well as long pre-sputtering time are required for plasma nitriding of aluminum or its alloys only......
