Atomic ordering in Ni sub(3)Mn-Ni sub(3)Ti microcrystalline alloys

Neutron diffraction is used to determine the concentration dependences of the long-and short-range order parameters and the antiphase-domain size in Ni sub(3)Mn-Ni sub(3)Ti microcrystalline alloys produced by melt quenching and the initial bulk alloys quenched from 1433 K. The dependences of the ord...

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Bibliographic Details
Published inRussian metallurgy Metally Vol. 2006; no. 6; pp. 522 - 527
Main Authors Goman'kov, VI, Glezer, A M, Blinova, EN, Manaenkov, SE, Yazvitskii, MYu, Fykin, LE, Chevychelov, V A
Format Journal Article
LanguageEnglish
Published 01.12.2006
Subjects
Alloys
Melts
Neutron diffraction
Order disorder
Quenching
Quenching (cooling)
Solid solutions
Transition temperature
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Summary:Neutron diffraction is used to determine the concentration dependences of the long-and short-range order parameters and the antiphase-domain size in Ni sub(3)Mn-Ni sub(3)Ti microcrystalline alloys produced by melt quenching and the initial bulk alloys quenched from 1433 K. The dependences of the order parameters on the order-disorder transition temperatures are determined. Microcrystals of the gamma ' phase are found to have a high long-range order parameter as compared to this parameter in the bulk alloys. This fact is explained by the high degree of supersaturation of a solid solution with excess vacancies formed during melt quenching and, hence, a sharp increase in the atomic diffusion mobility.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ObjectType-Feature-1
ISSN:0036-0295
1555-6255
DOI:10.1134/S0036029506060097