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Trans. Nonferrous Met. Soc. China 20(2010) s943-s947 Electro-pulse modification and reheating process for production of thixotropic microstructure in AlSi7Mg alloy TIAN Wen-tong(田文彤)1... Industrial University, Jinzhou 121001, China Received 13 July 2010; accepted 25 June 2010 Abstract: Electro-pulse modification (EPM) was used to change the dendritic structure of AlSi7Mg alloy to globular......
Grain Refinement and Modification of Al-Cu Alloys with Yttrium李敏School of Materials Science & Engineering,Harbin Institute of Technology摘 要:The refinement and modification of Al-Cu alloys can result in the change of solidification process,e.g.the nucleation temperature,eutectic arrest,solidification range and cooling rate.Specially,the refinement......
phase changes from the initial Chinese script shape to granule and/or polygon shape in Mg-9Al-1Si alloy. The modification of Mg2Si phase is possibly attributed to a shift of the eutectic composition... treatment; Mg2Si phase; modification 1 Introduction Mg-Al-Si alloys have been used as die casting alloys at elevated temperature in automotive and aerospace industries for a long time[1-2]. However......
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Chemical Modification of Ethylacetoacetate with ASB in Aqueous Medium柳华实,葛曷一摘 要:Ethylacetoacetate (EAA) was mixed with aluminum sec-butoxide (ASB... solution. TEM analysis showed that the surfaces of the colloidal particles with EAA were not as clean as those without EAA, implying the formation of a surface modification layer around the colloidal......
Effect of united refining and modification on mechanical properties of A356 aluminium alloys ZUO Xiu-rong(左秀荣), ZHONG Zhi-guo(仲志国) Key Laboratory of Material Physics, Ministry of Education, School of Physics Science and Engineering, Zhengzhou University, Zhengzhou 450052, China Received 28 July 2006; accepted 15 September 2006 Abstract: The refining and modification effect of Ti (from GRAI......
Structural characteristics,dispersion,and modification of fibrous bruciteXi Cao,Xiu-yun ChuanKey Laboratory of Orogen and Crust Evolution of the Education Ministry of China,School of Earth and Space...-APS) compound modification agent.The nanofibers were characterized by using X-ray diffraction(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM),Fourier transform infrared......
Surface Modification of Natural Fibrous Brucite with Stearic Acid曹曦,传秀云,ZHOU Shuhui,HUANG DubinSchool of Earth and Space Sciences,Peking University摘 要:Fibrous brucite,a kind of brucite with unique structure and physical properties,was modified with stearic acid as a surface modifier.In order to investigate the mechanism of surface modification......
Magnesia Modification of Alkali-Activated Slag Fly Ash Cement沈卫国摘 要:A new type of magnesia modification alkali-activated cement was prepared, the strength, setting time, shrinkage ratio and cracking behavior, as well as the composition and structure of the hydration product were investigated. The results indicate that the setting time of this cement......