Physical and mechanical properties of iron-aluminium-(Mn, Si) lightweight steels; Proprietes physiques et mecaniques des aciers 'alleges' fer-aluminium (au Mn-Si)

Iron-aluminium alloys containing up to 9 wt-% Al exhibit promising physical and mechanical properties for the development of high performance lightweight steels for automotive applications and for building constructions. Some of these alloys have a b.c.c. structure and have interesting physical and mechanical properties. Macro-alloying with manganese favours the formation of the austenite phase. Micro-alloying and thermomechanical processing including texture development will improve the plastic anisotropy properties and the strain hardening exponent. (authors)