Iron powder was compacted at three different pressures and heated to two temperatures, 900° and 1000°C, for 20 min before hot rolling. Metallographic examination indicated three stages in the deformation process of hot rolling. These were: restacking and rearrangement of particles during entry into the mill, followed by localized deformation and folding-over of the particles, and finally bulk deformation leading to elongation and recrystallization of the grain structure.
Get full access to this article
View all access options for this article.
References
1.
NaeserG. and ZirmF., Stahl und Eisen, 1950, 70, 995.
2.
CrooksS. R., Iron and Steel Engineer, 1962, 39, 72.
3.
EvansP. E., ‘Powder Metallurgy’, p. 553. 1961: New York (Interscience).
4.
WeaverC. H., ButtersR. G., and LundJ. A., Int. J. Powder Metall., 1972,8, (1), 3.
5.
SakaiT., Metallurgia and Metal Forming, 1974, 41, (10), 310.
6.
EvansP. E., Metals and Materials, 1968 (Aug.), pp. 235-240.
7.
AppooP., MSc Thesis, Univ. of Aston in Birmingham, 1973.
8.
HeckelR. W., Trans. AIME, 1961, 221, 1001.
9.
HewittR. L., WallaceW., and de MalherbeM. C., Powder Met., 1974, 17, (33), 1.
