Study of the Isothermal Oxidation Process and Phase Transformations in B2-(Ni,Pt)Al/RENE-N5 System Academic Article uri icon

abstract

  • 2016 by the authors; licensee MDPI, Basel, Switzerland. Changes in composition, crystal structure and phase transformations of B2-(Ni,Pt)Al coatings upon isothermal oxidation experiments (natural and scale free oxidation) at 1100 C, as a function of time beyond their martensitic transformation, are reported. Specifically, the analysis of lattice parameter and composition are performed to identify changes in the B2-(Ni,Pt)Al phase upon the chemically-driven L10-(Ni,Pt)Al and L12-(Ni,Pt)3Al transformations. The B2-(Ni,Pt)Al phase was found to disorder and transform the martensite during the heat treatments for both oxidation experiments at approximately 36.3 and 40.9 at. % of Al, 47.7 and 42.9 at. % of Ni, 6.2 and 8.5 at. % of Pt, 4.2 and 2.9 at. % of Cr and 4.4 and 3.8 at. % of Co. The lattice constant and the long-range order parameter of the B2-(Ni,Pt)Al phase decreased linearly as a function of the elemental content irrespective of the nature of the oxidation experiments.

published proceedings

  • METALS

author list (cited authors)

  • Alberto Caceres-Diaz, L., Manuel Alvarado-Orozco, J., Ruiz-Luna, H., Edison Garcia-Herrera, J., Gabriela Mora-Garcia, A., Trapaga-Martinez, G., Arroyave, R., & Munoz-Saldana, J.

citation count

  • 6

complete list of authors

  • Alberto Caceres-Diaz, Luis||Manuel Alvarado-Orozco, Juan||Ruiz-Luna, Haidee||Edison Garcia-Herrera, John||Gabriela Mora-Garcia, Alma||Trapaga-Martinez, Gerardo||Arroyave, Raymundo||Munoz-Saldana, Juan

publication date

  • January 2016

publisher

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