Mechanically workable high-strength Cu-Zr composite

Sang Soo Shin, Kyung Mook Lim, Eok Soo Kim, Jae Chul Lee

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Ultrafine-grained or nanostructured alloys usually lack the strain hardening capability needed to sustain uniform tensile deformation under high stresses. To circumvent this problem, we fabricated the Cu-based composite reinforced with the 3-dimensionally interconnected Cu 5Zr phase using the combined technique of rapid quenching and subsequent hot-rolling. The alloy exhibited a tensile ductility of ~2.5% together with a strength of 1.57 GPa, which exceeds the values of most commercially available Cu-Be alloys. In this study, we elucidated the structural origin of the high strength and tensile ductility of the developed alloy by examining the thermal stability of the Cu 5Zr reinforcing phase and the energy (work) absorption capability of the Cu matrix.

Original languageEnglish
Pages (from-to)293-299
Number of pages7
JournalJournal of Korean Institute of Metals and Materials
Volume50
Issue number4
DOIs
Publication statusPublished - 2012 Apr

Keywords

  • Cu-Zr binary alloy
  • Eutectic structure
  • Hot-rolling
  • Nanostructured alloy
  • Superlattice

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Modelling and Simulation
  • Surfaces, Coatings and Films
  • Metals and Alloys

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