期刊
SCRIPTA MATERIALIA
卷 66, 期 5, 页码 227-230出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2011.10.043
关键词
Cu and Cu-Al alloy; High-pressure torsion (HPT); Nanostructure; Strength-ductility synergy; Stacking fault energy (SFE)
类别
资金
- IMR
- CAS
- National Natural Science Foundation of China [50841024, 50890173, 50931005, 51101162]
- National Basic Research Program of China [2010CB631006]
- Royal Society of the UK [JP871294]
Nanostructured Cu and Cu-Al alloys processed by high-pressure torsion were isochronally annealed to investigate the effects of the stacking fault energy (SFE) on strength and ductility. All metals exhibit a similar general trend that the strength decreases and the ductility improves with increasing annealing temperatures, and a notable enhancement of ductility was achieved only when the volume fraction of recrystallized grains exceeded similar to 80%. The strength-ductility synergy improves significantly with decreasing SFE. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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