Paper Title:
Microstructures and Tensile Properties of Fe-40Al Intermetallic with High Boron Content
  Abstract

The effects of B addition up to 0.4 wt% (i.e., 1.61 at%) to Fe-40Al 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 1x100s-1 at room temperature. The increase in elongation with increasing strain rate was discussed in terms of suppression of hydrogen embrittlement.

  Info
Periodical
Materials Science Forum (Volumes 510-511)
Edited by
Hyung Sun Kim, Yu Bao Li and Soo Wohn Lee
Pages
350-353
DOI
10.4028/www.scientific.net/MSF.510-511.350
Citation
J. H. Lee, J. W. Byeon, S.I. Kwun, S.J. Hong, J.G. Huh, C.Y. Hyun, "Microstructures and Tensile Properties of Fe-40Al Intermetallic with High Boron Content", Materials Science Forum, Vols. 510-511, pp. 350-353, 2006
Online since
March 2006
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