Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 528, Issue 9, Pages 3463-3467Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2011.01.034
Keywords
Al-Mg2Si in situ composites; ECAP; Microstructural refinement; Particle redistribution; Mechanical property
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Funding
- Shanxi Science and Technology Department [20090321071]
- Shanxi Province Foundation for Returnees [2007-25]
- Innovation of College Student of Taiyuan City [08122067]
- Taiyuan Science and Technology Development Funds [09121002]
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A modified B-C route, noted as BC-m, was designed and employed to process an Al-Mg2Si composite in an effort to improve the ductility of the composite. The modification was implemented to improve the effectiveness of particle redistribution of the conventional B-C route while maintaining its high grain refinement efficiency. The experimental results demonstrated that route BC-m was strongly effective in redistributing particles while maintaining a comparable microstructural refinement efficiency relative to route B-C, which led to an increase in ultimate tensile strength and much higher ductility in the composite. Additionally, the use of route B-C resulted in higher yield strength because of its stronger work-hardening effect compared to route BC-m. (C) 2011 Elsevier B.V. All rights reserved.
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