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Ductility and Fracture of FeAl: Effects of Composition and Environment
Published online by Cambridge University Press: 10 February 2011
Abstract
In ultrahigh vacuum (UHV), the ductility of FeAl decreases with increasing Al content and fracture becomes increasingly intergranular. Boron improves ductility by segregating to the grain boundaries and suppressing grain-boundary fracture. However, with increasing Al concentration, even the B-doped alloys become brittle and fracture intergranularly. Hydrogen gas at low pressures embritties FeAl, although not as severely as atmospheric moisture. Ductility is highest in UHV followed by that in O2, vacuum, and air.
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- Copyright © Materials Research Society 1999