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Preparation of Al2O3/Cu Composites by Internal Oxidation in Cu-Al Alloy Sheet Processing

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Abstract:

Internal oxidation Cu-Al alloy sheet processing has been used to prepare dispersion-strengthened Al2O3/Cu composites. A new technique has been developed that successfully avoids mixed Cu-Al powder preparation, H2-reduction, and sintering processes. The microstructure and phase were investigated by metallurgical microscope, SEM, and TEM. Holding-time, internal oxidation temperature and thickness of Cu-Al alloy sheet were the three key factors with regard to preparing Al2O3/Cu composites by internal oxidation in Cu-Al alloy sheet. The mechanical characteristics and electric properties of Al2O3/Cu composites sheet and hot-extruded rod were examined. The results show hot extrusion process enhances microhardness and ultimate tensile strength to a higher level with and exerts a little influence on high electrical conductivity.

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Periodical:

Advanced Materials Research (Volumes 602-604)

Pages:

2034-2039

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.602-604.2034

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Online since:

December 2012

Authors:

Rui Wu, Dan Wen Zhang, Juan Sun, Feng Zhang Ren, Qing Chuan He

Keywords:

Al2O3/Cu Composite, Cu-Al Alloy, Dispersion-Strengthened, Hot Extrusion, Internal Oxidation

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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