Microstructures and tensile properties of Fe-40Al intermetallic with high boron content
iron aluminide; boron; tensile elongation; microradiography; FEAL; DUCTILITY; ALLOYS; NI3AL; AL; Engineering, Manufacturing; Materials Science, Multidisciplinary
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.
Eco-Materials Processing & Design Vii
"Microstructures and tensile properties of Fe-40Al intermetallic with high boron content" (2006). Faculty Bibliography 2000s. 6334.