Phase transformations in an Fe-8Al-30Mn-1.5Si-1.5C alloy

Title:	Phase transformations in an Fe-8Al-30Mn-1.5Si-1.5C alloy
Authors:	Lee, JW Liu, TF 材料科學與工程學系 Department of Materials Science and Engineering
Keywords:	Fe-Al-Mn-Si-C alloy;spinodal decomposition;continuous ordering transition;anti-phase boundaries
Issue Date:	1-Mar-2001
Abstract:	The phase transformations in an Fe-8Al-30Mn-1.5Si-1.5C alloy has been investigated by means of transmission electron microscopy. In the as-quenched condition, the microstructure of the alloy was austenite phase containing fine (Fe,Mn)(3)AlC carbides. The fine (Fe,Mn)(3) AlC carbides were formed during quenching by a spinodal decomposition. When the as-quenched alloy was aged at temperatures ranging from 550 to 1000 degreesC, the phase transformation sequence as the aging temperature increased was found to be (Fe,Mn)(3)AlC carbide + D0(3) --> (Fe, Mn)(3)AlC carbide + B2 --> (Fe, Mn)(3)AlC carbide + alpha --> gamma. This transformation has never before been observed in the Fe-Al-Mn-C and Fe-Al-Mn-Si-C alloys. (C) 2001 Elsevier Science B.V. All rights reserved.
URI:	http://dx.doi.org/10.1016/S0254-0584(00)00398-9 http://hdl.handle.net/11536/29786
ISSN:	0254-0584
DOI:	10.1016/S0254-0584(00)00398-9
Journal:	MATERIALS CHEMISTRY AND PHYSICS
Volume:	69
Issue:	1-3
Begin Page:	192
End Page:	198
Appears in Collections:	Articles

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