Influence of the Third Element on the High Temperature Oxidation Behavior of γ'-Ni3Al Alloys

Shinya Mikuni; Shigenari Hayashi; Toshio Narita

doi:10.4028/www.scientific.net/MSF.522-523.617

Paper Titles

Numerical Analysis and Control of Gas Carburizing under Changes in Gas Compositions
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Microstructures of SiO₂ Scales Formed on MoSi₂
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Oxidation Rate of Magnesia-Carbon Refractory with Aluminum Additive
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TEM Observation of the Initial Stage Oxidation of TiAl Based Alloys in a Simulated Combustion Atmosphere
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Influence of the Third Element on the High Temperature Oxidation Behavior of γ'-Ni₃Al Alloys
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Influence of Additional Elements on the Oxidation Behaviour of Nb-Al-Cr Base Alloys
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Influence of Ion Implantation of Several Elements on Oxidation Behavior of TiAl
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Isothermal Oxidation of Sintered β-FeSi₂ in Air
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High Temperature Oxidation of TiAl-1.5wt.%Mn-(0, 5, 10)wt.%Y₂O₃ Alloys
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HomeMaterials Science ForumMaterials Science Forum Vols. 522-523Influence of the Third Element on the High...

Influence of the Third Element on the High Temperature Oxidation Behavior of γ'-Ni₃Al Alloys

Abstract:

The effects of the third element on the high temperature oxidation of γ'-Ni3Al with 5at%X (X=Ti, Ta, Nb, Cu, Co and Fe) alloys were investigated at 1173K in air, and oxidation behavior could be classified into three groups. The first group, comprised of alloys with Cu and Co, showed good oxidation performance with Al2O3 formation. A second group contains Ti, Ta, and Nb as alloying elements, and showed poor oxidation performance. With Fe or Mn addition the alloy oxidation performance was intermediate between the first and second group. The effects of these elements are discussed associate with partitioning factors for each element in the γ'-phase.