Title

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

Authors

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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