Acta Metallurgica Sinica (English Letters) ›› 1989, Vol. 2 ›› Issue (11): 339-343.

• Research paper • Previous Articles     Next Articles

EFFECT OF STRUCTURE ON GRAPHITIZATION OF WHITE MALLEABLE CAST IRON

ZHANG Xijun;CHEN Yongmin, Kunming Institute of Technology, Kunming, China   

  • Received:1989-11-11 Revised:1989-11-11 Online:1989-11-11 Published:2009-10-10

Abstract: The structure of white iron treated with Si-Bi-AI complex inoculant has been observed by SEM and TEM. The results show that, in comparison with the samples treated with ordinary inoculants, disorder, overlapping and inflexion of the pearlitic lamella appear, besides, the dis- location density increases apparently. The graphitization can be quickly realized at the tem- perature lower than that of austenitic transition (720℃).

Key words: malleable cast iron, dislocation, graphitization