Microstructure and Mechanical Properties of Dual Multi-Phase Intermetallic Alloys Composed of Geometrically Close Packed Ni3X Structures

Takayuki Takasugi; Yasuyuki Kaneno

doi:10.4028/www.scientific.net/MSF.561-565.375

Paper Titles

Resistance of Thin Al Foam Panels to Deep Indentation
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Preparation of the Al-Cu-Co and Al-Cu-Ni Ternary Intermetallic Powders via a Solid-Liquid Reaction Ball Milling Technique
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Preparation of Ti-Al Intermetallics by Aluminum Melt Infiltration-Diffusion Annealing Technique
p.367

Oxidation Behavior and Pack Siliconized Oxidation-Resistant Coatings of an Nb-Based Ultrahigh Temperature Alloy
p.371

Microstructure and Mechanical Properties of Dual Multi-Phase Intermetallic Alloys Composed of Geometrically Close Packed Ni₃X Structures
p.375

Development of a Second Generation TiAl Turbocharger
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Microstructure and Deformation Behavior of Lamellar Ti-Rich TiAl Crystal with Lotus-Type Aligned Pores
p.383

Microstructures Evolution of a Ni-Base Superalloy after Long-Term Aging at 750°C
p.387

Effect of Third Elements on Pseudoelastic Behavior in Fe₃Al Single Crystals
p.391

HomeMaterials Science ForumMaterials Science Forum Vols. 561-565Microstructure and Mechanical Properties of Dual...

Microstructure and Mechanical Properties of Dual Multi-Phase Intermetallic Alloys Composed of Geometrically Close Packed Ni₃X Structures

Abstract:

Dual two-phase intermetallic alloys composed of geometrically close packed (GCP) structures of Ni3Al(L12) and Ni3V(D022) containing Nb were investigated in terms of the microstructural evolution during low temperature annealing (aging) and the related mechanical properties. The eutectoid region, i.e. the prior Al phase (Ni solid solution) is composed of the lamellar-like structure consisting of Ni3Al(L12) and Ni3V(D022) phases. The lamellar-like structure tended to align along <001> direction and on {001} plane in the prior A1 phase (or the L12 phase). In a wide range of temperature, the dual two-phase intermetallic alloys showed high yield and tensile strength, and also reasonable tensile ductility, accompanied with ductile fracture mode.