Microscopic phase-field study on aging behavior of Ni_（75）Al_（17）Zn_8 alloy-中国Betway体育网页登陆

摘要 TheprecipitatingkineticsofNi75Al17Zn8alloywasstudiedatboth873Kand973Kbymicroscopicphase-fieldmodel.Thecalculationresultsshowthattheorder-disordertransformationexperiencesthematrix→lowly-orderedL10phase→L12phaseat973K.AndthenucleationofL12particlesbelongstothespinodaldecompositionmechanism.Astemperatureincreases,orderingsofAlandZnatomsareresisted,butcoarseningofL12particlesispromoted.Thevalueofcoarseningkineticexponentsapproachesto1/2.Inaddition,thediscussionsaboutNi-Alanti-sitedefectandZnsubstitutionsforNisiteandAlsiteexhibitthatthehigherthetemperature,themoredistinctivetheNi-Alanti-sitedefect,butthelesstheZnsubstitution.

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Microscopic phase-field study on aging behavior of Ni_（75）Al_（17）Zn_8 alloy

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Microscopic phase-field study on aging behavior of Ni_（75）Al_（17）Zn_8 alloy

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