Role of nanocrystals in ductile Ni-Pd-P metallic glass

Yuqiao Zeng, Dmitri V. Louzguine-Luzgin, Nobuyuki Nishiyama, Akihisa Inoue

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

A Ni50Pd30P20 bulk glassy alloy contains nanoscale clusters/medium-range order (MRO) zones. However, as this alloy exhibits "nucleation and growth" type transformation on heating, these nanoscale clusters are believed to have an under-critical size. The relatively large activation energy is the reason why these nanoscale clusters do not grow significantly upon deformation. A clear nucleation and growth of a Ni2Pd2P phase is observed near the micro-crack area. The existence of MRO zones as structural inhomogeneities and blockage of the crack-tip propagation area by the dynamically formed nanoparticles may lead to stabilization of deformation.

Original languageEnglish
Pages (from-to)131-134
Number of pages4
JournalJournal of Alloys and Compounds
Volume441
Issue number1-2
DOIs
Publication statusPublished - 2007 Aug 30

Keywords

  • Bulk amorphous materials
  • Casting
  • Ductility
  • Metallic glasses
  • Nanocrystalline materials

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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