{"title":"CALPHAD方法中热空位的描述","authors":"T. Abe, K. Hashimoto, M. Shimono","doi":"10.2320/JINSTMET.J2016061","DOIUrl":null,"url":null,"abstract":"Thermal vacancies in solids have not been treated explicitly in the CALPHAD-type thermodynamic assessments because it was considered that their contributions to the Gibbs energy were limited, even at the melting point. However, the vacancy fraction is necessary for dynamic simulations, such as precipitations and di ff usion processes. In this paper, a procedure is proposed to set parameters in the CALPHAD-type assessments, to reproduce the temperature dependency of thermal vacancies in pure metals and solid solutions.","PeriodicalId":17337,"journal":{"name":"Journal of The Japan Institute of Metals","volume":"36 1","pages":"127-132"},"PeriodicalIF":0.5000,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Description of the Thermal Vacancies in the CALPHAD Method\",\"authors\":\"T. Abe, K. Hashimoto, M. Shimono\",\"doi\":\"10.2320/JINSTMET.J2016061\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Thermal vacancies in solids have not been treated explicitly in the CALPHAD-type thermodynamic assessments because it was considered that their contributions to the Gibbs energy were limited, even at the melting point. However, the vacancy fraction is necessary for dynamic simulations, such as precipitations and di ff usion processes. In this paper, a procedure is proposed to set parameters in the CALPHAD-type assessments, to reproduce the temperature dependency of thermal vacancies in pure metals and solid solutions.\",\"PeriodicalId\":17337,\"journal\":{\"name\":\"Journal of The Japan Institute of Metals\",\"volume\":\"36 1\",\"pages\":\"127-132\"},\"PeriodicalIF\":0.5000,\"publicationDate\":\"2017-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of The Japan Institute of Metals\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.2320/JINSTMET.J2016061\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"METALLURGY & METALLURGICAL ENGINEERING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of The Japan Institute of Metals","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.2320/JINSTMET.J2016061","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
Description of the Thermal Vacancies in the CALPHAD Method
Thermal vacancies in solids have not been treated explicitly in the CALPHAD-type thermodynamic assessments because it was considered that their contributions to the Gibbs energy were limited, even at the melting point. However, the vacancy fraction is necessary for dynamic simulations, such as precipitations and di ff usion processes. In this paper, a procedure is proposed to set parameters in the CALPHAD-type assessments, to reproduce the temperature dependency of thermal vacancies in pure metals and solid solutions.
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