Room-temperature deformation of single-crystal B2 Fe-Al alloys: The effect of stoichiometry and cooling rate
- 1 March 1991
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine A
- Vol. 63 (3) , 559-570
- https://doi.org/10.1080/01418619108213899
Abstract
The slip behaviour of B2 Fe-Al single crystals has been examined. Fe-rich variations in stoichiometry have resulted in large decreases in the critical resolved shear stress for {110} slip. This decrease has been related to the associated decrease in antiphase-boundary energy from compositional disordering. Quenching has resulted in dramatic increases in strength for both stoichiometric and Fe-rich single crystals. This effect, which occurs without passing through an order-disorder transition, has been attributed to quenching-in of large concentrations of thermal vacancies which act to pin slip dislocations.Keywords
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