The influence of rolling schedule on the dynamic properties of accumulatively roll bonded nano-layered Cu-Nb

Ellen K. Cerreta, Weizhong Han, Nathan A. Mara, Irene J. Beyerlein, John S. Carpenter, Shijian Zheng, Carl P. Trujillo, Patricia O. Dickerson, Amit Misra

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Cu-Nb nano-layered material was produced through an accumulative roll bonding (ARB) technique. Using this technique, two different rolling schedules were employed to produce a normal and transverse rolled material. This resulted in specimens with differing microstructures within the 135nm thick nano-layers and interface structures between the layers. The dynamic response of these bulk Cu-Nb nanocomposites was then investigated under planar shock loading. It was observed in dynamically fractured specimens that the characteristics of ductile failure features formed on the fracture surface after dynamic loading were dependent upon the processing route of the nanocomposite. Specifically, grain shape differences due to dissimilar rolling passes are linked with differences in the failure response, particularly kinetics of fracture. In addition, incipient failure immediately below the primary fracture surface was also observed. Numerous nanovoids were nucleated and aligned linearly in the middle of Cu layers within the shocked Cu-Nb nanocomposites. These observations indicate relative stability of Cu-Nb interfaces produced by the ARB methods utilized in this study under dynamic loading conditions.

Original languageEnglish (US)
Title of host publicationMetal Forming 2014
EditorsFabrizio Micari, Livan Fratini
PublisherTrans Tech Publications Ltd
Pages1031-1040
Number of pages10
ISBN (Electronic)9783038351931
DOIs
StatePublished - 2014
Event15th International Conference on Metal Forming 2014 - Palermo, Italy
Duration: Sep 21 2014Sep 24 2014

Publication series

NameKey Engineering Materials
Volume622-623
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Other

Other15th International Conference on Metal Forming 2014
Country/TerritoryItaly
CityPalermo
Period9/21/149/24/14

Bibliographical note

Publisher Copyright:
© (2014) Trans Tech Publications, Switzerland.

Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.

Keywords

  • Cu-Nb
  • Damage
  • Dynamic properties
  • Nano-laminate
  • Roll-bonding

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