AN INVESTIGATION ON STRIATED INCLUSIONS IN MILD STEEL PLATES
CHUANG YU-CHIH AND WU CHEUNG-HANG Institute of Metal Research;Academia Sinica
Cite this article:
CHUANG YU-CHIH AND WU CHEUNG-HANG Institute of Metal Research;Academia Sinica. AN INVESTIGATION ON STRIATED INCLUSIONS IN MILD STEEL PLATES. Acta Metall Sin, 1956, 1(2): 155-164.
Abstract This paper describes the nature of striated inclusions present in certain mildsteel plates,the origin of such inclusions is discussed.Microscopic examinations supplemented by X-ray diffraction studies show thatthe main constituents of the striated inclusions present in the steel plates appearto be the same as found in the attacked layer of fire-clay refractories which predo-minately consist of mullite(3Al_2O_3·2SiO_2)and cristobalite.Taking into accountthe metallurgical history of the plate and change in the chemical compositionof the refractories brought about during teeming,there is reason to believe thatstriated inclusions in steel may be originated from the refractories caused bythe attack of MnO or MnO·FeO present in the liquid steel.
