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Mechanical Properties of Cu-Ni-Zn/Cu-Cr/Cu-Ni-Zn Composite Plate Processed by Explosive Bonding and Cold Rolling

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Abstract:

Mechanical properties of 3-ply Cu-Ni-Zn/Cu-Cr/Cu-Ni-Zn clad composite plates prepared by explosive bonding and cold-rolling. No intermetallic compounds were observed at the Cu-Ni-Zn/Cu-Cr interface after explosive bonding and cold-rolling and heat-treatment at 723K. The strength of as-rolled clad plate reached up to 575MPa with the ductility of 30% after heat treatment at 723K for 1 hour. The strength dropped to 510MPa and the ductility increased to 48% after heat treatment at 723K for 1.5 hour. There are no stepwise drops of the flow stress before final fracture, meaning three plates were bonded together until the last moment of the stress-strain curve. The observation of the fractured specimens revealed no interface separation even after fracture. The excellent mechanical reliability and the good interfacial bonding strength can be attributed to the absence of detrimental interfacial reaction compounds between Cu-Ni-Zn and Cu-Cr after annealing.

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Periodical:

Advanced Materials Research (Volume 951)

Pages:

83-86

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.951.83

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Online since:

May 2014

Authors:

Gyeong Tae Kang, Jae Sook Song, Sun Ig Hong*

Keywords:

Clad, Cold Rolling, Cu-Cr, Cu-Ni-Zn, Explosive Bonding, Hybrid, Strength

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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