Hoda Dini, Nils-Eric Andersson, E. Ghassemali, A. Jarfors
{"title":"组织尺度对铸态AZ91D热膨胀行为的影响","authors":"Hoda Dini, Nils-Eric Andersson, E. Ghassemali, A. Jarfors","doi":"10.1002/9781119093428.CH67","DOIUrl":null,"url":null,"abstract":"The effect of microstructure on thermal expansion of AZ91D cast alloy was studied. Samples with equiaxed grains and a controlled secondary dendrite arm spacing (SDAS) were fabricated using gradient solidification. SDAS was chosen to represent the range of micro structural scale found in sand castings down to that of high pressure die casting. Optical microscopy and electron backscatter diffraction (EBSD) were used for micro structural characterization. The relation between thermal expansion and micro structural scale of existing phases precipitated, in particular grain size, SDAS and fraction of Mg17Al12 was analyzed.","PeriodicalId":200097,"journal":{"name":"Magnesium Technology","volume":"22 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2015-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":"{\"title\":\"Microstructural Scale Effects on Thermal Expansion Behaviour of Cast AZ91D\",\"authors\":\"Hoda Dini, Nils-Eric Andersson, E. Ghassemali, A. Jarfors\",\"doi\":\"10.1002/9781119093428.CH67\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The effect of microstructure on thermal expansion of AZ91D cast alloy was studied. Samples with equiaxed grains and a controlled secondary dendrite arm spacing (SDAS) were fabricated using gradient solidification. SDAS was chosen to represent the range of micro structural scale found in sand castings down to that of high pressure die casting. Optical microscopy and electron backscatter diffraction (EBSD) were used for micro structural characterization. The relation between thermal expansion and micro structural scale of existing phases precipitated, in particular grain size, SDAS and fraction of Mg17Al12 was analyzed.\",\"PeriodicalId\":200097,\"journal\":{\"name\":\"Magnesium Technology\",\"volume\":\"22 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2015-02-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Magnesium Technology\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1002/9781119093428.CH67\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Magnesium Technology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1002/9781119093428.CH67","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Microstructural Scale Effects on Thermal Expansion Behaviour of Cast AZ91D
The effect of microstructure on thermal expansion of AZ91D cast alloy was studied. Samples with equiaxed grains and a controlled secondary dendrite arm spacing (SDAS) were fabricated using gradient solidification. SDAS was chosen to represent the range of micro structural scale found in sand castings down to that of high pressure die casting. Optical microscopy and electron backscatter diffraction (EBSD) were used for micro structural characterization. The relation between thermal expansion and micro structural scale of existing phases precipitated, in particular grain size, SDAS and fraction of Mg17Al12 was analyzed.
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