{"title":"ADC12铝合金半固态流变特性研究","authors":"S. Gautam, H. Roy, A. K. Lohar, Sudip Samanta","doi":"10.1080/13640461.2023.2197808","DOIUrl":null,"url":null,"abstract":"ABSTRACT The present investigation emphasises on rheological behaviour of semi-solid slurry of ADC12 Al alloy in order to understand mould filling behaviour during semi-solid processing. Three different experimental investigations are done using rheometer, namely, continuous cooling test, isothermal test and shear jump test, to understand the rheological behaviour of ADC12 Al alloy. Continuous cooling tests reveal increase in slurry viscosity with decrease in temperature at a specific shear rate. The isothermal test results show decreasing viscosity with increase in rate of shear and confirm that semi-solid slurry experiences shear-thinning phenomena. Shear jump experiments (SJEs) show that the viscosity of the semi-solid slurry is less sensitive at higher shear rate, which is desirable. The steady state and iso-structural stress values (obtained from SJEs) at low shear rate region showcase an upward movement of solid content, i.e. with a proportionally downward slurry temperature.","PeriodicalId":13939,"journal":{"name":"International Journal of Cast Metals Research","volume":null,"pages":null},"PeriodicalIF":1.3000,"publicationDate":"2023-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Rheological properties of ADC12 Al alloy in the semi-solid state\",\"authors\":\"S. Gautam, H. Roy, A. K. Lohar, Sudip Samanta\",\"doi\":\"10.1080/13640461.2023.2197808\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"ABSTRACT The present investigation emphasises on rheological behaviour of semi-solid slurry of ADC12 Al alloy in order to understand mould filling behaviour during semi-solid processing. Three different experimental investigations are done using rheometer, namely, continuous cooling test, isothermal test and shear jump test, to understand the rheological behaviour of ADC12 Al alloy. Continuous cooling tests reveal increase in slurry viscosity with decrease in temperature at a specific shear rate. The isothermal test results show decreasing viscosity with increase in rate of shear and confirm that semi-solid slurry experiences shear-thinning phenomena. Shear jump experiments (SJEs) show that the viscosity of the semi-solid slurry is less sensitive at higher shear rate, which is desirable. The steady state and iso-structural stress values (obtained from SJEs) at low shear rate region showcase an upward movement of solid content, i.e. with a proportionally downward slurry temperature.\",\"PeriodicalId\":13939,\"journal\":{\"name\":\"International Journal of Cast Metals Research\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.3000,\"publicationDate\":\"2023-04-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Cast Metals Research\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1080/13640461.2023.2197808\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"METALLURGY & METALLURGICAL ENGINEERING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Cast Metals Research","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1080/13640461.2023.2197808","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
Rheological properties of ADC12 Al alloy in the semi-solid state
ABSTRACT The present investigation emphasises on rheological behaviour of semi-solid slurry of ADC12 Al alloy in order to understand mould filling behaviour during semi-solid processing. Three different experimental investigations are done using rheometer, namely, continuous cooling test, isothermal test and shear jump test, to understand the rheological behaviour of ADC12 Al alloy. Continuous cooling tests reveal increase in slurry viscosity with decrease in temperature at a specific shear rate. The isothermal test results show decreasing viscosity with increase in rate of shear and confirm that semi-solid slurry experiences shear-thinning phenomena. Shear jump experiments (SJEs) show that the viscosity of the semi-solid slurry is less sensitive at higher shear rate, which is desirable. The steady state and iso-structural stress values (obtained from SJEs) at low shear rate region showcase an upward movement of solid content, i.e. with a proportionally downward slurry temperature.
期刊介绍：
The International Journal of Cast Metals Research is devoted to the dissemination of peer reviewed information on the science and engineering of cast metals, solidification and casting processes. Assured production of high integrity castings requires an integrated approach that optimises casting, mould and gating design; mould materials and binders; alloy composition and microstructure; metal melting, modification and handling; dimensional control; and finishing and post-treatment of the casting. The Journal reports advances in both the fundamental science and materials and production engineering contributing to the successful manufacture of fit for purpose castings.
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