Enhancement of ductility in B2-type Zr-Co-Pd alloys with martensitic transformation

M. Matsuda, T. Nishimoto, Y. Morizono, S. Tsurekawa, M. Nishida

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

The relationship between the microstructures and the mechanical properties in the ternary Zr-Co-Pd alloys has been investigated. X-ray diffraction measurements at room temperature indicated that Zr50Co 50-xPdx alloys underwent martensitic transformation from B2 to B33 structures as a result of substituting Pd for Co at amounts greater than 12 at%. The yield and tensile strength increased at a substitution amount of 6 at%. The total elongation remarkably increased as a result of substituting Pd for Co at amounts up to 10 at%; in particular, the Zr50Co 40Pd10 alloy exhibited a considerably high total elongation of 22%. Deformation-induced martensite with a lenticular morphology was observed in the B2 parent phase near the fractured edge, in addition to dislocation with the <100>B2-type Burgers vector. Consequently, we conclude that the remarkable enhancement of the ductility is due to the transformation-induced plasticity associated with the deformation-induced martensite.

Original languageEnglish
Pages (from-to)894-899
Number of pages6
JournalIntermetallics
Volume19
Issue number7
DOIs
Publication statusPublished - Jul 2011

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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