Conclusions
-
1.
During hot rolling with 20–30% swaging at 750–950°C zones of small grains are formed at the surface of sheets of steel containing 3% Si. The thickness of this zone increases with increasing degrees of deformation. The grain size in the surface zone is the main factor determining the plasticity of such steel during subsequent cold deformation.
-
2.
In a large grain steel the main factor affecting plasticity is the amount of the precipitates of the second phase along the grain boundaries. A large amount of precipitates leads to premature twinning, which, at low temperatures, favors the formation of microcracks.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Literature cited
V. A. Koroleva and M. I. Sherstyuk, Stal', No. 6 (1956).
E. Harry, "Iron and Steel Institute",170 (1952).
M. M. Shteinberg, I. N. Bogdanov, G. A. Zykov, and R. Sh. Shklyar, "FMM",5, No. 1 (1955).
J. Ježek, J. Vobožil, and V. Čihal, "Hutnicke listy",14, No. 9 (1959).
S. A. Saltykov, Stereometric Metallography [in Russian], Moscow, Metallurgizdat (1958).
B. Šestak, "Hutnick listy"14, No. 3 (1959).
L. P. Ershova, M. I. Kolov, M. F. Kochnev, L. V. Mironov, and F. N. Khisamov, Stal', No. 8 (1958).
S. I. Bulat, "MiTOM" No. 2 (1965).
G. R. Lou, Atomic Mechanism of Fracture [Russian translation] Moscow, Metallurgizdat (1963).
Additional information
Central Scientific Research Institute of Ferrous Metallurgy Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 6, pp. 22–26, June, 1966
Rights and permissions
About this article
Cite this article
Bulat, S.I., Matorin, V.I. Influence of the microstructure on the ductility of steel with 3% Si. Met Sci Heat Treat 8, 455–460 (1966). https://doi.org/10.1007/BF00658931
Issue Date:
DOI: https://doi.org/10.1007/BF00658931