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$Llo{\rightarrow}Ni_5Al_3$ Transformation in Martensitic Ni-Al Alloys  

Jee, K.K. (Div. of Materials, Korea Inst. of Science and Technology)
Song, S.Y. (Moscow Steel and Alloy Institute)
Jang, W.Y. (Div. of Matall. and Mater. Engr., Chosun Univ.)
Publication Information
Journal of the Korean Society for Heat Treatment / v.15, no.2, 2002 , pp. 65-69 More about this Journal
Abstract
$Llo{\rightarrow}Ni_5Al_3$ reordering and related properties in Ni-Al alloys consisting of 64-65at%Ni are characterized by X-ray diffraction, shape memory effect and damping capacity. Formation of $Ni_5Al_3$ takes place by simple ordering of atoms with a continuous increase in c/a ratio. As a result, degradation of shape memory effect and damping capacity is observed after short time annealing at $200-300^{\circ}C$.
Keywords
Ni-Al alloy; Martensitic transformation; $Llo{\rightarrow}Ni_5Al_3$ reordering; Shape memory effect; Damping capacity;
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