High strength ultrafine eutectic Fe-Nb-Al composites with enhanced plasticity

J. M. Park, K. B. Kim, W. T. Kim, M. H. Lee, J. Eckert, D. H. Kim

Research output: Contribution to journalArticle

77 Citations (Scopus)

Abstract

An enhancement of plasticity in high strength ultrafine eutectic Fe-Nb composites has been accomplished by introducing heterogeneities in length-scale of the microstructure. Addition of Al acting as a stabilizer for the α-Fe phase in the Fe-Nb composites results in the formation of a larger volume fraction of primary α-Fe phase and an ultrafine eutectic structure with reduced lamellar spacing. As a result, Fe-Nb-Al composites exhibit a good combination of fracture strength and plasticity. Due to the presence of the solution hardened α-Fe phase, the Fe-Nb-Al composites exhibit significantly enhanced work hardening behavior at room temperature.

Original languageEnglish
Pages (from-to)642-650
Number of pages9
JournalIntermetallics
Volume16
Issue number5
DOIs
Publication statusPublished - 2008 May 1

All Science Journal Classification (ASJC) codes

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

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