Strain rate sensitivity of ductility and fracture behaviors in a Fe-28Al alloy

Mingwei Chen, Dongliang Lin, Yuanming Xia, C. T. Liu

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

The mechanical properties of Fe-28Al under a strain rate ranging from 10-4 to 1300 s -1 were tested in air and water at room temperature. The ductility, yield stress and ultimate stress of Fe-28Al are sensitive to the strain rate and gradually increase with strain rate in all test ranges. The fracture surface observations indicated that the fracture mode of Fe-28Al varies from complete transgranular fracture to a mixture of transgranular cleavage and intergranular fracture with strain rate increasing from 10-4 to 1300 s-1. It is proved that environmental embrittlement is a main factor controlling the ductility of Fe-28Al, even at high strain rate, and grain boundaries play different roles in the ductility of Fe-28Al at low and high strain rate.

Original languageEnglish
Pages (from-to)317-323
Number of pages7
JournalMaterials Science and Engineering A
Volume239-240
Issue number1-2
DOIs
Publication statusPublished - 1997 Dec
Externally publishedYes

Keywords

  • FeAl
  • Fracture behavior
  • Intermetallics
  • Strain rate sensitivity
  • Tensile impact

ASJC Scopus subject areas

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

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