In situ martensitic phase reinforced Fe-Nb-Ni-Mn ultrafine composite with enhanced mechanical properties

T. E. Kim, J. M. Park, Uta Kühn, J. Eckert, W. T. Kim, D. H. Kim

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

An in situ formed martensitic dendrite reinforced Fe-11Nb-10Ni-5Mn ultrafine composite was developed by copper mold casting. This new class of ultrafine composite composed of micrometer-scale martensitic α'-Fe dendrites and ultrafine-scale alternating eutectics exhibits a high fracture strength of 1.6. GPa and a large compressive plasticity up to 10.5%. These excellent mechanical properties originate from the precipitation of the martensitic α'-Fe dendrites containing numerous nanometer-scale laths which are effective to generate multiple shear banding and restrict the rapid propagation of localized shear bands.

Original languageEnglish
Pages (from-to)51-54
Number of pages4
JournalMaterials Science and Engineering A
Volume531
DOIs
Publication statusPublished - 2012 Jan 1

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this