SHI Deke; GUO Dazhan; SONO Xiaoping(Xi'an jiaotong University) (Manuscript received 9 Octorber; 1984; revised manuscript 10 January; 1986)
Cite this article:
SHI Deke; GUO Dazhan; SONO Xiaoping(Xi'an jiaotong University) (Manuscript received 9 Octorber; 1984; revised manuscript 10 January; 1986). BAINITIC TRANSFORMATION IN NODULAR CAST IRON. Acta Metall Sin, 1987, 23(3): 271-318.
Abstract The temperature which separates upper and lower bainitic transformations is about 300℃ in nodular cast iron. The overall activation energy of lower bainitic transformation of it is nearly the same as that for high carbon steels, but that of upper bainitic transformation is much smallar than the value of latter. this can be explained by the fact that the addition of Si suppresses precipitation of Fe_3C. The following orientation relationships have been observed by the present work: N-W relation for ferrite and austenite in upper bainite; K-S relation for ferrite and austenite in lower bainite and Bagaryatski relation for Fe_3C and ferrite in lower bainite.
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