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

    Authors

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

    Comments

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    Keywords

    iron aluminide; boron; tensile elongation; microradiography; FEAL; DUCTILITY; ALLOYS; NI3AL; AL; Engineering, Manufacturing; Materials Science, Multidisciplinary

    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 1x10(0)s(-1) at room temperature. The increase in elongation with increasing strain rate was discussed in terms of suppression of hydrogen embrittlement.

    Journal Title

    Eco-Materials Processing & Design Vii

    Volume

    510-511

    Publication Date

    1-1-2006

    Document Type

    Article

    Language

    English

    First Page

    350

    Last Page

    353

    WOS Identifier

    WOS:000237176000088

    ISSN

    0255-5476; 0-87849-995-4

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