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Effect of Pouring Temperature by a Novel micro fused-casting on microstructure and Properties of ZL101 Semisolid Slurry

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Journal of Wuhan University of Technology(Materials Science) 2023年第5期38卷 1179-1183页

作者： LUO Xiaoqiang HAN Yongjun HOU Yanmin LI Qingbin JIN Yu Pingdingshan University Pingdingshan 467000China Institute of Mechanics Chinese Academy of SciencesBeijing 100190China

A novel micro fused-casting(MFC)process is developed for semisolid aluminum alloy *** microstructure evolution and properties of semisolid ZL101 aluminum alloy slurry with difierent pouring temperature by MFC are investigated in this *** the cooling process,the effects of the pouring temperature on microstructure and properties is primarily *** microstructure of the semisolid ZL101 aluminum alloy is more homogeneous and the grain is smaller under proper pouring *** of liquids and solids of ZL101 aluminum alloy is measured by difierential scanning calorimetry(DSC).Distribution and characteristics of the microstructure of samples are examined by optical microscope(OM),scanning electron microscopy(SEM)equipped with energy dispersive spectrometer(EDS).The results show that the ZL101 semisolid slurry fabricated by MFC presents uniform shape and good grain size under the pouring temperature of 594°C and the stirring velocity of 600 r/min,and the fine grains of the primary a-Al phase with average grain size of 55μm and shape factor up to 0.67 were ***,the ultimate tensile strength and the average Vickers hardness for semisolid ZL101 aluminum slurry are 178.19±1.37 MPa and 86.15±1.16 HV,respectively.

关键词： ZL101 aluminum alloy semisolid micro fused-casting pouring temperature

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microstructure and Properties of SemisolidA356 Alloy Strip Affected by Nozzle Temperature of a Novel micro fused-casting

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Journal of Wuhan University of Technology(Materials Science) 2020年第3期35卷 653-657页

作者： LUO Xiaoqiang LI Qingbin XUE Lingwei LI Yanling HAN Yongjun ZHOU Yanbiao Henan Key Laboratory of Research for Central Plains Ancient Ceramics Pingdingshan UniversityPingdingshan 467000China .Insti-tute of Mechanics Chinese Academy of SciencesBeijing 100190China

The semisolid A356 alloy strip was prepared by a novel continuous micro fused-casting process. The microstructure evolution and mechanical property of A356 aluminum alloy strip with different nozzle temperatures were investigated. The nozzle temperature had great influences on the microstructure and property primarily accompanied with the crystal change in the fused-casting area through the cooling conditions. The results showed that the semisolid A356 alloy strip samples fabricated by micro fused-casting demonstrated good performances and uniform structures with the nozzle temperature at 593 ℃ and the stirring velocity at 700 r/min. The fine grains of the primary α-Al phase with average grain size of 51 μm and shape factor up to 0.71 were obtained under the micro fused-casting process, and the ultimate average vickers hardness came up to 83.39±0.89 HV, and the tensile strength and elongation of the A356 alloy strip reached 245.32 MPa and 7.85%, respectively.

关键词： semisolid A356 aluminum alloy nozzle temperature micro fused-casting

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