Effects of Carbon Content on Primary Recrystallization Texture in Fe-Al-N Alloys

Fe-Al-N alloys investigated contained<0.005%, -0.06% Al, <0.002%-0.02% N and 0.001%-0.04%C. Effects of C content on primary recrystallization texture, A1N precipitation, grain size and drawability in these alloys were studied.With increasing C content, the amount of grains with {111} lattice plane parallel to the sheet plane decreases, the main component of primary recrystallization texture changes from {111}‹110› to {554}‹225›, grain size decreases, grain shape changes from the “pancake” to the equiaxial type, and thedrawability markedly decreases.These effects of C content on various properties of Fe-Al-N alloys are rather inconspicuous for the C content up to 0.01%but become extremely remarkable when it exceeds 0.01%and are explained by the effect of C content on AIN precipitation during precipitation treatment prior to cold rolling and during heating to (and at) the annealing temperature.