| Electrical resistivity and structural heredity of hypereutectic Al-Si alloy melt |
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| 作者姓名： | 李培杰 熊玉华 张燕飞 曾大本 |
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| 作者单位： | Department of Mechanical Engineering，Tsinghua University，Department of Mechanical Engineering，Tsinghua University，Department of Mechanical Engineering，Tsinghua University，Department of Mechanical Engineering，Tsinghua University Beijing 100084，China，Beijing 100084，China，Beijing 100084，China，Beijing 100084，China |
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| 基金项目： | ProjectsupportedbytheSpecialFoundationoftheStateEducationMinistryofChinaforOverseasReturnees |
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| 摘 要： | 1 INTRODUCTIONAgreatamountofpracticeprovesthat ,aftertheoriginalchargesareremelted ,themeltstatehashereditaryeffectsonthesolidificationstructurenewlyobtained .Hereditycanbeconsideredfrom generalsenseasthetransformationofthesimilaritiesinthestructureorphysicalpropertiesfromtheoriginalob jectstothesecondaryones .Moreover ,itissuitablefordescribingpropertiesthatcorrelatewiththepro cesswhichthealloysamplesexperiencedinsteadofpropertiesofalloystatefunctions .Whilestudyingthestructuralheredity…
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Electrical resistivity and structural heredity of hypereutectic Al-Si alloy melt |
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| LI Pei jie,XIONG Yu hua,ZHANG Yan fei,ZENG Da ben.Electrical resistivity and structural heredity of hypereutectic Al-Si alloy melt[J].Transactions of Nonferrous Metals Society of China,2003,13(2). |
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| Authors: | LI Pei jie XIONG Yu hua ZHANG Yan fei ZENG Da ben |
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| Abstract: | The variation rule of the sensitive physical properties of Al-16%Si alloy melt was studied. The results show that within a certain temperature range, the electrical resistivity of Al-16%Si alloy melt changes abruptly in the forms of inflection points or platforms, which is ascribed to the changes in the internal microstructure of the melt. Based on this rule, the variation characteristics of microstructure can be revealed. When remelting and overheating Al-16%Si alloy to 1050℃, the hereditary effects of different original structure on solidification structure after remelting can be eliminated, which can provide scientific foundation for properly controlling the hereditary factors transmitting the structural information of melt. |
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| Keywords: | Al Si alloys melt original structure electrical resistivity structural heredity |
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