Structure of Complex Concentrated Alloys Derived from Iron Aluminide Fe 3 Al.

Autor:	Pešička, Josef, Kratochvíl, Petr, Král, Robert, Veselý, Jozef, Jača, Eliška, Preisler, Dalibor, Daniš, Stanislav, Minárik, Peter, Čamek, Libor
Předmět:	IRON alloys IRON ALLOYS TRANSMISSION electron microscopy SCANNING electron microscopy PHASE separation
Zdroj:	Materials (1996-1944); Aug2023, Vol. 16 Issue 15, p5388, 10p
Abstrakt:	The phase structure and composition of a series of four alloys based on Fe3Al was investigated by means of scanning electron microscopy, X-ray diffraction and transmission electron microscopy. The materials were composed of Fe and Al with a fixed ratio of 3:1 alloyed with V, Cr and Ni at 8, 12, 15 and 20 at. % each (composition formula: Fe3(100−3x)/4 Al(100−3x)/4VxCrxNix). For 8% alloying, the material is single-phase D03. Furthermore, 12 and 15% alloying results in bcc–B2 phase separation on two length scales. Moreover, 20% alloying gives rise to the FeNiCrV σ phase supplemented by B2. These findings are discussed with respect to the results obtained via Calphad modeling using the TCHEA5 database and can serve in further improvement. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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