Simultaneously Increasing the Ductility and Strength of Ultra‐Fine‐Grained Pure Copper

  title={Simultaneously Increasing the Ductility and Strength of Ultra‐Fine‐Grained Pure Copper},
  author={Yonghao Zhao and John F. Bingert and Xiaozhou Liao and Bao-zhi Cui and Ke Han and Alla V. Sergueeva and Amiya K. Mukherjee and Ruslan Z. Valiev and Terence G. Langdon and Yuntian Zhu},
  journal={Advanced Materials},
Bulk ultra-fine-grained (UFG) materials produced by severe plastic deformation (SPD) usually have high strength but relatively low ductility at ambient temperatures. This low ductility is attributed to insufficient strain hardening due to an inability to accumulate dislocations. For a singlephased UFG material where dislocation slip is the primary deformation mechanism, a long-standing fundamental question concerns the feasibility of developing microstructures that offer high ductility without… Expand

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