The effect of stacking fault energy on equilibrium grain size and tensile properties of nanostructured copper and copper-aluminum alloys processed by equal channel angular pressing

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	The effect of stacking fault energy on equilibrium grain size and tensile properties of nanostructured copper and copper-aluminum alloys processed by equal channel angular pressing
	C. X. Huang ; W. Hu ; G. Yang ; Z. F. Zhang ; S. D. Wu ; Q. Y. Wang ; G. Gottstein
刊名	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
	2012
卷号	556 页码:638-647
关键词	ECAP Cu-Al alloy Stacking fault energy Nanostructure Strength and ductility cu-al alloys dynamic plastic-deformation microstructural evolution mechanical-behavior shear bands strain-rate zn alloys temperature strength refinement
ISSN号	0921-5093
中文摘要	Pure copper and copper-aluminum alloys (aluminum content of 2.3 at%, 7.2 at%, and 11.6 at% with stacking fault energies (SFEs) of about 48 mJ/m(2), 21 mJ/m(2), and 8 mJ/m(2), respectively) were processed by equal channel angular pressing (ECAP) at room temperature for 8 passes to generate a nanoscale grain size. The effect of SFE on microstructure refinement and tensile properties of these materials were investigated. Microstructural observations indicated that the grain size of as-ECAPed alloy decreased monotonically with increasing Al concentration, i.e. with decreasing SFE. A very low SFE was especially favorable for achieving a true nanocrystalline structure (e.g. d approximate to 57 nm in Cu-11.6 at% Al) by twinning and shear banding. The tensile strength and uniform elongation of nanostructured copper-aluminum alloys were simultaneously enhanced owing to the significant grain size refinement, solid solution strengthening and enhanced strain hardening capability. (c) 2012 Elsevier B.V. All rights reserved.
原文出处	://WOS:000309497300081
公开日期	2013-02-05
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/60006]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	C. X. Huang,W. Hu,G. Yang,et al. The effect of stacking fault energy on equilibrium grain size and tensile properties of nanostructured copper and copper-aluminum alloys processed by equal channel angular pressing[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2012,556:638-647.
APA	C. X. Huang.,W. Hu.,G. Yang.,Z. F. Zhang.,S. D. Wu.,...&G. Gottstein.(2012).The effect of stacking fault energy on equilibrium grain size and tensile properties of nanostructured copper and copper-aluminum alloys processed by equal channel angular pressing.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,556,638-647.
MLA	C. X. Huang,et al."The effect of stacking fault energy on equilibrium grain size and tensile properties of nanostructured copper and copper-aluminum alloys processed by equal channel angular pressing".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 556(2012):638-647.