Liu Xingjun , Niu Zeming , Lu Yong , Guo Yihui , Han Jiajia , Chen Yuechao , Wang Cuiping
{"title":"Thermodynamic Assessment of Co-Nb-W System","authors":"Liu Xingjun , Niu Zeming , Lu Yong , Guo Yihui , Han Jiajia , Chen Yuechao , Wang Cuiping","doi":"10.1016/S1875-5372(18)30212-1","DOIUrl":null,"url":null,"abstract":"<div><p>The thermodynamic assessment of the Co-Nb-W ternary system has been carried out by applying the CALPHAD method. A slight modification of the Co-W binary system has been performed to unify the model of <em>μ</em> phase in Co-Nb-W system. The three published isothermal sections at 1273, 1373 and 1473 K have been critically examined and used to optimize the model parameters. The solution phases, including <em>α</em>Co and bcc were modeled as substitutional solutions; the <em>λ, χ</em>, and Co<sub>3</sub>Nb phases have been assessed using two-sublattice models. The Co<sub>7</sub>W<sub>6</sub> and Co<sub>7</sub>Nb<sub>6</sub> phases were described as (Co, Nb)<sub>1</sub>(Co, Nb, W)<sub>2</sub>(Co, Nb, W)<sub>4</sub>(Co)<sub>6</sub>. Calculated isothermal sections and vertical sections agreed well with the experimental data.</p></div>","PeriodicalId":21056,"journal":{"name":"稀有金属材料与工程","volume":"47 10","pages":"Pages 2919-2926"},"PeriodicalIF":0.6000,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1875-5372(18)30212-1","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"稀有金属材料与工程","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1875537218302121","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 1
Abstract
The thermodynamic assessment of the Co-Nb-W ternary system has been carried out by applying the CALPHAD method. A slight modification of the Co-W binary system has been performed to unify the model of μ phase in Co-Nb-W system. The three published isothermal sections at 1273, 1373 and 1473 K have been critically examined and used to optimize the model parameters. The solution phases, including αCo and bcc were modeled as substitutional solutions; the λ, χ, and Co3Nb phases have been assessed using two-sublattice models. The Co7W6 and Co7Nb6 phases were described as (Co, Nb)1(Co, Nb, W)2(Co, Nb, W)4(Co)6. Calculated isothermal sections and vertical sections agreed well with the experimental data.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
