Microstructure and mechanical properties of a novel polycrystalline Ni3Al-based intermetallic alloy

Oxidation Behavior of Pre-Strained Polycrystalline Ni3Al-Based Superalloy

“…NiAl and Ni 3 Al are promising intermetallic compounds according to the Ni-Al binary system, due to their higher melting points (1395 • C and 1639 • C, respectively) [6,7]. Polycrystalline Ni 3 Al-based superalloys, mainly composed of the intermetallic compounds NiAl (β phase, B2-type structure) and Ni 3 Al (γ ′ phase, L1 2 -tybe structure), have gained significant attention in the field of high-temperature structural materials [8]. These alloys offer advantages such as lower density, high melting point and excellent high-temperature performance, making them potential replacements for traditional heat-resistant materials [9][10][11].…”

“…For instance, the outer NiO and inner Al 2 O 3 structures formed during the oxidation process of Ni 3 Al-based superalloys play a crucial role in determining the alloy's antioxidant properties [18]. In addition to applying protective layers to the matrix [19][20][21], the antioxidant properties of the alloys can be enhanced through the processes of heat treatment [8,22,23] and alloying [24,25]. These methods have achieved good results, although it is challenging to achieve further significant improvements in the antioxidant properties of superalloys.…”