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Achieving Forced Mixing in Cu-Based Immiscible Alloys via Friction Stir Processing

  • Mageshwari KomarasamyEmail author
  • Ryan Tharp
  • Subhasis Sinha
  • Saket Thapliyal
  • Rajiv Mishra
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

Cu-based binary and ternary immiscible alloys were synthesized from elemental powders via friction stir processing (FSP) as a pathway to obtain thermally stable bulk nanostructured alloys with forced miscibility. The processed alloys were characterized using scanning electron microscopy (SEM). High magnification SEM confirmed the formation of forced mixing in the friction stir processed layer. Forced miscibility in immiscible alloys systems was possible due to high temperature intense severe plastic deformation during FSP. Mixing characteristics in Cu–Ag–Nb and Cu–Fe immiscible alloys were carried out and a mixing mechanism was proposed. As-processed alloys exhibited hardness in the range of 215–320 HV0.3.

Keywords

Immiscible alloys Friction stir processing Forced mixing Microstructural evolution Hardness 

Notes

Acknowledgements

Authors acknowledge the help of Maya Duffy and Smruthi Senthil in sample preparation. Authors also acknowledge Material Research Facility (MRF) at University of North Texas for the microscopy facilities.

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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Mageshwari Komarasamy
    • 1
    Email author
  • Ryan Tharp
    • 1
  • Subhasis Sinha
    • 1
  • Saket Thapliyal
    • 1
  • Rajiv Mishra
    • 1
    • 2
  1. 1.Department of Materials Science and EngineeringCenter for Friction Stir Processing, University of North TexasDentonUSA
  2. 2.Department of Materials Science and EngineeringCenter for Friction Stir Processing, Advanced Materials and Manufacturing Processes Institute, University of North TexasDentonUSA

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