papers on pure iron

1. ANISOTROPIC AND HETEROGENEOUS NUCLEATION DURING THE GAMMA
TO ALPHA TRANSFORMATION IN IRON
After the material is fabricated into sheet, the desired
textures are effected duringa final anneal attempera-
tures below that of a phasechange by secondary
recrystallization.
One of the most recently developed
textures is (OOl)[lOO].Theselective drivingforce is believed to residein the anisotropy of surfaceenergy
at the annealingatmosphere-metal interface. Pre-
ferred growth of (001) grains is considered to occur
when critical concentrationsof sulfuror oxygen
are present in the annealingatmosphere. These
elements are considered to selectively adsorb on the
surfacethereby making the (001) of lowest surface
energy and promoting the growth of (001) alpha
grains.
(a) to document the (OOl)[uvw] structurewith domain
patterns and an X-ray method;
(b) to examine the
influenceof hydrogen sulfideconcentration in the
annealingatmosphere on the formation of (OOl)[uvw] ;
(c) to determine if (OOl)[uvw] results from growth of
alpha into gamma or of alpha into alpha;
(d) toevaluate if nucleation occurs mainly atthe surfaceor
in the bulk;
(e) to differentiate between preferred
nucleation or anisotropic growth as the principal
mechanismfor the formation of this oriented structure ;
and
(f) bo obtain information on nucleation sites.
The experimental results areused to develop a model
and t’o calculatethe anisotropy of energy required to
effect (OOl)[uvw].

5. Cube Texture in Body Centered Magnetic Alloys

7. TRANSFORMATION TEXTURE OF PURE IRON AFTER COLD-
ROLLING AND ANNEALING
Abstract

8. The microstructures of pure iron prepared by cold-rolling and annealing were observed with
SEM-EBSD. The pure iron with 99.99 % purity was used. The iron specimens were cold-rolled
at reduction rates of 75~95 %. The vacuum-annealing of the rolled specimens was performed
above transformation temperature of 1185 K for the pure iron. The {100}-grains with millimeter-
size appeared in the transformation textures after the annealing of the rolled iron sheets. The
rolling at a high reduction rate led to the formation of strong {100} texture for the iron sheet
after the rolling and annealing above the transformation temperature. The heavy deformation by
the rolling resulted in a fine-microstructure for the iron sheet annealed above the transformation
temperature after the rolling.