Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 573, Issue -, Pages 197-204Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2013.02.061
Keywords
Ultra-fine grained materials; Aluminum alloys; Recrystallization; Thermomechanical processing; Grain boundaries
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Funding
- One Hundred Talents Project of Hebei Province, China
- Research Program of Department of Education, Hebei Province, China [ZH2011111]
- National Natural Science Foundation of China [51131002]
- U. S. Office of Naval Research [N00014-12-1-0237]
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This paper reports a novel strategy to produce an ultra-fine grained (UFG) structure in an Al-4Mg (weight percent, wt%) alloy via discontinuous dynamic recrystallization under moderate straining (true strain <2.5) as imposed during conventional extrusion at 400 degrees C. The mechanisms underlying the occurrence of discontinuous dynamic recrystallization and the formation of the UFG structure were analyzed and discussed in detail. The UFG Al-4 wt%Mg alloy exhibits both high tensile yield strength and elongation. (c) 2013 Elsevier B.V. All rights reserved.
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