Application of polarized light microscopy on microstructural characterization of semisolid slurry
作者机构：National Engineering Research Center for Composite MaterialsGeneral Research Institute for Nonferrous MetalBeijing100088China Department of Mechanical and Energy EngineeringSouthern University of Science and TechnologyShenzhen518055China
出 版 物：《Rare Metals》 (稀有金属（英文版）)
年 卷 期：2023年第42卷第10期
页 面：3545-3552页
核心收录：
学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化]
基 金：financially supported by the National Key Research and Development Program of China (No. 2016YFB0301003) the Shenzhen Free Exploring Basic Research Project (No. JCYJ20170307110223452)
主 题：Semisolid Microstructural characterization Polarized light microscopy Pouring temperature Mass of liquid
摘 要：In this paper,two ways of micro structural characterization,optical microscopy(OM) and polarized light microscopy(PLM),were both employed to describe the micro structure of semisolid slurry prepared by swirling enthalpy equilibration device(SEED).The results show that PLM is more reliable and accurate than OM to describe the special morphology feature of semisolid slurry made by SEED ***,the effects of pouring temperature and mass of molten liquid on the primary α-Al particle size and morphology were also investigated using *** quantitative metallographic results measured from PLM demonstrate that the grain size and morphology and their distribution are significantly affected by both pouring temperature and the mass of molten *** grain size poured with 2.7 kg liquid decreases from 659 to186 μm,and grain morphology transforms from dendrite to globular structure with pouring temperature reducing from690 to 630℃.The decreasing pouring temperature also promotes the distribution of spherical structure on the cross ***,the mass of molten liquid decreasing from 2.7 to 2.3 kg can decrease the grain size by maximum of 44% at high pouring temperature.
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