Deformation mechanisms in ultrahigh-strength and high-ductility nanostructured FeMnAlC alloy

標題:	Deformation mechanisms in ultrahigh-strength and high-ductility nanostructured FeMnAlC alloy
作者:	Lin, Chih-Lung Chao, Chuen-Guang Juang, Jenh-Yih Yang, Jenn-Ming Liu, Tzeng-Feng 材料科學與工程學系電子物理學系 Department of Materials Science and Engineering Department of Electrophysics
關鍵字:	Metals and alloys;Nanostructured materials;Lightweight alloy;Spinodal decomposition;Bursting dislocation nucleation;Taylor lattice
公開日期:	15-Feb-2014
摘要:	The deformation mechanisms of a bulk nanostructured Fe-30Mn-9.5Al-2.0C (in wt.%) alloy were investigated. After aging at 450 degrees C for 9-12 h, the alloy exhibits an exceptional strength-ductility combination (e. g. yield strength similar to 1406 MPa with elongation similar to 32%). The aged alloy exhibits a novel microstructure with isolated austenite nano-channels bounded by an extremely high volume fraction of directional nano-sized (Fe,Mn)(3)AlC carbides (kappa'-carbides). The plastic deformation was found to be dominated by bursting dislocation nucleation within the isolated austenite nano-channels. (C) 2013 Elsevier B. V. All rights reserved.
URI:	http://dx.doi.org/10.1016/j.jallcom.2013.10.153 http://hdl.handle.net/11536/23579
ISSN:	0925-8388
DOI:	10.1016/j.jallcom.2013.10.153
期刊:	JOURNAL OF ALLOYS AND COMPOUNDS
Volume:	586
Issue:
起始頁:	616
結束頁:	620
Appears in Collections:	Articles

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