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Dislocation dynamics modeling of plastic deformation in single-crystal copper at high strain rates

  • Arash Hosseinzadeh Delandar , Seyed Masood Hafez Haghighat , Pavel Korzhavyi and Rolf Sandström
Published/Copyright: November 3, 2016
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 107 Issue 11

Abstract

Tensile deformation of single-crystal copper along [001] orientation is modeled. Single crystal is deformed at three sets of high strain rates, ranging from 103 to 105 s−1, using the three-dimensional dislocation dynamics technique to simulate dislocation microstructure evolution and the resultant macroscopic response. Two initial dislocation configurations consisting of straight dislocations and Frank–Read sources are randomly distributed over the simulation volume with an edge length of 1 μm. For both initial setups, the mechanical response of the single crystal to the external loading demonstrates a considerable effect of strain rate. In addition, strain rate influences dislocation density evolution and consequently development of the dislocation microstructure. At all applied strain rates for both initial dislocation setups, dislocations evolve into a heterogeneous microstructure and this heterogeneity increases with plastic strain and strain rate.

Keywords: Dislocation dynamics; Single-crystal copper; High strain rate deformation; Strain rate effect; Heterogeneous microstructure
*Correspondence address, Arash Hosseinzadeh Delandar, PhD candidate, Royal Institute of Technology, Department of Materials Science and Engineering, Brinellvägen 23, 10044, Stockholm, Sweden, Tel.: +4687906544, E-mail:

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Received: 2016-05-02
Accepted: 2016-08-11
Published Online: 2016-11-03
Published in Print: 2016-11-10

© 2016, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111433
Keywords for this article
Dislocation dynamics; Single-crystal copper; High strain rate deformation; Strain rate effect; Heterogeneous microstructure

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. In-situ annealing and computation study of cube texture development in a commercial aluminum alloy
  5. Dislocation dynamics modeling of plastic deformation in single-crystal copper at high strain rates
  6. Investigation of mechanical properties of tubular aluminum foams
  7. Dependence of microstructure, microhardness, tensile strength and electrical resistivity on growth rates for directionally solidified Zn-Al-Sb eutectic alloy
  8. Effects of temperature on fatigue limits and fracture morphologies of 40Cr steels formed by warm extrusion
  9. Synthesis of an oxidation-resistant SiC coating on graphite and modeling analysis with thermodynamics calculations
  10. Improved corrosion inhibition of 3-amino-1,2,4-triazole on mild steel electrode in HCl solution using surface nanocrystallization
  11. Chunky graphite formation in ductile cast irons: effect of silicon, carbon and rare earths
  12. Fabrication of 3D porous MoS2–GO nanocomposite monolith as a promising adsorbent
  13. Short Communications
  14. Two-stage method of synthesis of ultrafine powder of α-phase metallic cobalt
  15. Developing a multifunctional bio-ceramics composite based on β-tricalcium phosphate working as a single carrier for calcium supplement and low-dose drugs
  16. DGM News
  17. DGM News
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