The Tensile Response and Fracture Behavior of a Copper-Niobium Microcomposite: Role of Surface Modification

  • Paul Arindam
  • T. S. SrivatsanEmail author
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)


In this research study, the influence of nanocrystalline surface modification on microhardness, tensile response and fracture behaviour of an oxide dispersion strengthened copper-niobium (Cu-Nb) micro-composite was investigated. The presence of a hardened surface layer and associated compressive residual stress lead to a noticeable increase in micro-hardness and a marginal improvement in both stiffness and strength. The increase in work hardening is quantified by the monotonic stress versus strain curve. For both the as-provided and surface treated composites tensile fracture was macroscopically ductile and microscopically revealed features reminiscent of locally brittle and ductile failure mechanisms. The mechanical properties and fracture behaviour is discussed considering nature of loading and intrinsic microstructural effects.


Cu-Nb microcomposite Surface modification Micro-hardness Tensile response Tensile fracture Microstructural effects 



The material used in this research study was provided by OGM Americas (Research Triangle Park, North Carolina, USA). The authors extend gracious and generous thanks to Dr. C. Ye and his students (the University of Akron, Ohio, USA) for doing the surface modification (ultrasonic nanocrystal) on selected samples in their novel research laboratory.


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Copyright information

© The Minerals, Metals & Materials Society 2018

Authors and Affiliations

  1. 1.Division of Materials Science and Engineering, Department of Mechanical EngineeringThe University of AkronAkronUSA
  2. 2.The University of AkronAkronUSA

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