Effect of MeV ion irradiation on the coefficient of thermal expansion of Fe–Ni Invar alloys / Xuan Zheng in Acta materialia, Vol. 58 N° 4 (Fevrier 2010)  

Public ISBD [article]  inActa materialia > Vol. 58 N° 4 (Fevrier 2010) . - pp. 1236–1241 Titre : Effect of MeV ion irradiation on the coefficient of thermal expansion of Fe–Ni Invar alloys : A combinatorial study Type de document : texte imprimé Auteurs : Xuan Zheng, Auteur ; David G. Cahill, Auteur ; Ji-Cheng Zhao, Auteur Année de publication : 2011 Article en page(s) : pp. 1236–1241 Note générale : Métallurgie Langues : Anglais (eng) Mots-clés : Coefficient of thermal expansion Invar effect Ion irradiation Combinatorial study Résumé : The effect of low-dose MeV ion irradiation on the thermal conductivity and coefficient of thermal expansion (CTE) of Fe–Ni alloys has been studied over the entire composition range using a combinatorial method. With our experimental precision of ±5%, the thermal conductivity of Fe–Ni alloys is unchanged by View the MathML source irradiation at a fluence of View the MathML source. The CTE of Fe–Ni Invar alloys with Ni concentrations between 30 and 37 at.% increases significantly upon View the MathML source irradiation. At the Invar composition of Fe65Ni35, the CTE increases from View the MathML source before ion irradiation to View the MathML source after irradiation for an ion fluence of View the MathML source or, equivalently, 0.1 displacements per atom. We attribute this increase in CTE to changes in atomic short-range order created by ion irradiation. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645409007137 [article] Effect of MeV ion irradiation on the coefficient of thermal expansion of Fe–Ni Invar alloys : A combinatorial study [texte imprimé] / Xuan Zheng, Auteur ; David G. Cahill, Auteur ; Ji-Cheng Zhao, Auteur . - 2011 . - pp. 1236–1241. Métallurgie Langues : Anglais (eng) in Acta materialia > Vol. 58 N° 4 (Fevrier 2010) . - pp. 1236–1241 Mots-clés : Coefficient of thermal expansion Invar effect Ion irradiation Combinatorial study Résumé : The effect of low-dose MeV ion irradiation on the thermal conductivity and coefficient of thermal expansion (CTE) of Fe–Ni alloys has been studied over the entire composition range using a combinatorial method. With our experimental precision of ±5%, the thermal conductivity of Fe–Ni alloys is unchanged by View the MathML source irradiation at a fluence of View the MathML source. The CTE of Fe–Ni Invar alloys with Ni concentrations between 30 and 37 at.% increases significantly upon View the MathML source irradiation. At the Invar composition of Fe65Ni35, the CTE increases from View the MathML source before ion irradiation to View the MathML source after irradiation for an ion fluence of View the MathML source or, equivalently, 0.1 displacements per atom. We attribute this increase in CTE to changes in atomic short-range order created by ion irradiation. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645409007137

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