Mechanism of large strain accommodation assisted by shear localization in a precipitation-hardened Cu–Be alloy

Ivan Lomakin*, Alfiia Nigmatullina, Xavier Sauvage

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)
448 Downloads (Pure)

Abstract

The influence of the structural state on deformation mechanisms under large strains was investigated in a Cu – 2 wt.% Be alloy. Torque evolutions during straining exhibit serrations typical of structural relaxations in the precipitation-hardened alloy, but not in the solid solution state. Microstructure characterization revealed that homogeneous deformation of the solid solution led to strong grain size reduction (20 nm), while localization occurred in the precipitated state with numerous shear bands. The role of CuBe precipitates on hindering dislocation glide and the resulting shear localization under large strain is discussed.

Original languageEnglish
Article number141760
Number of pages6
JournalMaterials Science and Engineering A
Volume823
DOIs
Publication statusPublished - 17 Aug 2021
MoE publication typeA1 Journal article-refereed

Keywords

  • Copper alloy
  • Precipitation
  • Shear band
  • Strain localization
  • Ultrafine grains

Fingerprint

Dive into the research topics of 'Mechanism of large strain accommodation assisted by shear localization in a precipitation-hardened Cu–Be alloy'. Together they form a unique fingerprint.

Cite this