Influence of rare-earth metals on the high-temperature strength of Ni3Al-based alloys

Investigation of the Ni3Al-Fe alloys by resistivity measurements and differential thermal analysis

“…Currently the VKNA type alloys based on the Ni 3 Al compound (90% intermetallic phase) are developed and used in industry [3].The Ni 3 Al is ordered according to type L1 2 and occurs in a narrow concentration range near 25 at % Al. Its feature is the ability to dissolve almost all transition elements in various combinations.…”

“…The Ni 3 Al based intermetallic compound (γ' phase) is the main strengthening phase of foundry heat resistant nickel alloys, which represent an important group of high strength materials used when fabricating the most important details of gas turbine motors [1,2]. Currently the VKNA type alloys based on the Ni 3 Al compound (90% intermetallic phase) are developed and used in industry [3].…”

“…Currently the VKNA type alloys based on the Ni 3 Al compound (90% intermetallic phase) are developed and used in industry [3].…”

“…The Ni 3 Al is ordered according to type L1 2 and occurs in a narrow concentration range near 25 at % Al. Its feature is the ability to dissolve almost all transition elements in various combinations.…”

“…Practical application as a heat resistant construc tion material requires the elimination of the intercrys tallite brittleness, which is inherent to the Ni 3 Al alloy in the polycrystalline state. Iron is considered a possi ble plastificator [5].…”