Microstructures and tensile properties of Fe-40Al intermetallic with high boron content

J. H. Lee, J. W. Byeon, S. I. Kwun, S. J. Hong, J. G. Huh, C. Y. Hyun

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The effects of B addition up to 0.4 wt% (i.e., 1.61 at%) to Fe-40A1 alloy on microstructures and tensile properties were investigated. The vacancy-annealed specimens following casting and extrusion were examined by optical and scanning electron microscopy and thermal neutron-induced microradiography. The addition of a large amount of B resulted in grain refinement and changed the fracture mode from intergranular to transgranular to increase the tensile elongation. Especially, the alloy containing 0.3wt% B exhibited the elongation of 16.4% under the strain rate of 1×10 0s-1 at room temperature. The increase in elongation with increasing strain rate was discussed in terms of suppression of hydrogen embrittlement.

Original languageEnglish
Title of host publicationEco-Materials Processing and Design VII - Proceedings of the Conference of the 7th International Symposium on Eco-Materials Processing and Design, ISEPD-7
PublisherTrans Tech Publications Ltd
Pages350-353
Number of pages4
ISBN (Print)0878499954, 9780878499953
DOIs
StatePublished - 2006
Event7th International Symposium on Eco-Materials Processing and Design, ISEPD-7 - Chengdu, China
Duration: 8 Jan 200611 Jan 2006

Publication series

NameMaterials Science Forum
Volume510-511
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference7th International Symposium on Eco-Materials Processing and Design, ISEPD-7
Country/TerritoryChina
CityChengdu
Period8/01/0611/01/06

Keywords

  • Boron
  • Iron aluminide
  • Microradiography
  • Tensile elongation

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