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: | 15-二月-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 |
顯示於類別: | 期刊論文 |