Grain boundary precipitation in Fe-30Mn-9Al-5Cr-0.7C alloy

Title:	Grain boundary precipitation in Fe-30Mn-9Al-5Cr-0.7C alloy
Authors:	Tuan, Yi Hsuan Lin, Chih Lung Chao, Chuen Guang Liu, Tzeng Feng 材料科學與工程學系 Department of Materials Science and Engineering
Keywords:	transmission electron microscopy;carbides;ordering;austenitic iron aluminum manganese chromium carbon alloy
Issue Date:	1-Jul-2008
Abstract:	The as-quenched microstructure of the Fe-30%Mn-9%Al-5%Cr-0.7%C (in mass%) alloy was single-phase austenite. When the as-quenched alloy was aged at 550 degrees C-750 degrees C, fine (Fe,Mn)(3)AlC carbides were formed within the austenite matrix. In addition, as the aging temperature increased, a M7C3 carbide + D0(3) -> M7C3 carbide + B-2 -> M7C3 carbide + alpha (ferrite) phase transition had occurred on the grain boundaries. This grain boundary precipitation behavior has never before been observed in FeMnAlC and FeMnAlCrC alloy systems.
URI:	http://dx.doi.org/10.2320/matertrans.MRA2008060 http://hdl.handle.net/11536/8614
ISSN:	1345-9678
DOI:	10.2320/matertrans.MRA2008060
Journal:	MATERIALS TRANSACTIONS
Volume:	49
Issue:	7
Begin Page:	1589
End Page:	1593
Appears in Collections:	Articles

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