Phase transformation of high temperature on Fe–Al–Mn–Cr–C alloy

Effects of cobalt content on the microstructures of Fe–9Al–30Mn–1C–xCo alloys

“…The addition of Cr was found to be the most effective in improving the resistance to high-temperature oxidation and environmental embrittlement. Additionally, we found that the addition of Cr has a great influence on the phase transformation and liquidus temperatures of the Fe-Al-Mn-C alloy [16,17]. Other researchers have not previously observed these features in the Fe-Al-Mn-C-Cr alloy system.…”

“…Nevertheless, the SADP also comprises small superlattice spots. These superlattice spots were identified as -phase carbides ((Fe,Mn) 3 AlC x ) having an ordered L 1 2 -type structure with lattice parameter a = 0.385 nm [2,16,17]. The lattice parameter of thephase carbide has been widely reported by other researchers [2,20].…”

Formation of Hägg Carbide in an Fe-30Mn-10Al-4Cr-0.45C Alloy

“…A preliminary study of electron diffraction indicated that the precipitate was not of any known phases reported in FeMnAl, FeMnAlC and FeMnAlCrC alloy systems. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] In order to clarify the crystal structure of the precipitate, eight SADPs taken from the precipitate marked as C in Fig. 1 .…”

“…Additionally, the effects of Cr addition on the microstructures of the austenitic FeMnAlC alloys have also been examined by several researchers. 16,17) In the previous study, 16) it is seen that when the Fe-30 mass%Mn-9 mass%Al-5 mass%Cr-0.7 mass%C alloy was aged at 550-750 C, the fine 0 carbides were formed within the grain, and a ðM 7 C 3 þ D0 3 Þ ! ðM 7 C 3 þ B2Þ !…”

“…ð þ ð þ B2 þ D0 3 ÞÞ reaction occurred within the grain and on the = grain boundaries. 17) In contrast to the studies of the austenitic FeMnAlCrC alloys, information concerning the microstructures of the ( þ ) duplex FeMnAlCrC alloys is very deficient. Therefore, the purpose of this work is an attempt to study the microstructural developments in the Fe-30 mass%Mn-10 mass%Al-4 mass%Cr-0.45 mass%C alloy aged at 550 C.…”