Phase Transformation in Multicomponent Ni3 (Mn,Ti) Alloys

Yurii Gribov; Аnatoliy A. Klopotov; Aleksandr I. Potekaev

doi:10.4028/www.scientific.net/AMR.1013.115

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1013Phase Transformation in Multicomponent Ni3 (Mn,Ti)...

Phase Transformation in Multicomponent Ni₃(Mn,Ti) Alloys

Abstract:

The paper presents neutron diffraction analysis and X-ray investigation of ordered alloys Ni₃(Mn,Ti) within the concentration range from 0 to 12.5 at.% Ti. The significant effect of the third alloying element Ti on the atomic long-range order was observed in superstructure L1₂ of alloy Ni₃Mn. Experimental study has showed that a rapid quenching in ice water does not provide disordered Ni₃(Mn,Ti) alloys. The two-phase region of internmetallic bonds was detected in compounds L1₂ and D0₂₄. The paper presents results estimation of electrical resistivity, normal and abnormal values of hall coefficient, Nernst–Ettingshausen effect, thermal electromotive force, and average atomic magnetic moment in quenched and annealed Ni₃(Mn,Ti) alloys. Positive values of abnormal hall coefficient and Nernst–Ettingshausen effect were detected that confirms the predominant contribution of antiparallel spin 3d holes in conductivity. It is shown that in 2.2 at.% annealed Ti alloys ordering promotes 3d electron localization.

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Periodical:

Advanced Materials Research (Volume 1013)

Pages:

115-120

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1013.115

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Online since:

October 2014

Authors:

Yurii Gribov*, Аnatoliy A. Klopotov, Aleksandr I. Potekaev

Keywords:

L1₂Ordered Phase, Neutron, Ni-Mn System, Ordered State, Phase Transition Order-Disorder, Radiographic Examinations, Structural-Phase States

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