The mechanism of accelerated graphitization in hot forged white cast iron has been analysed and a mathematical relationship between graphite content (vol.-%) and the process variables has been determined. The power law variation of graphitization with annealing time formulated in the present investigation suggests that the first stage graphitization of hot forged white iron is a diffusion controlled precipitation process.
MST/219
Get full access to this article
View all access options for this article.
References
1.
BANDYOPADHYAYN. R., BANERJEEM. K., and DASP. P.:‘: Trans. Indian Inst. Met.,1986, 39, (5), 486.
2.
CHAKRAVORTYA. K., SARKELS., and GHOSHS.: Trans. Indian Inst. Met.,1980, 33, (6), 467.
3.
YAMAMOTOS., KAWANOY., HATTORIN., MIJRAKAMIY., and OZAKIR.: Met. Sci.,1977, 11, 571.
4.
DALmisriC. L.: Trans. AFS, 1954, 62, 582.
5.
WORDSWORTHJ. and SHENHYO. D.: Foundry Manage. Technol.,1978, 106, 59.
6.
SWINDELLSN. and AVERYJ. D.: in ‘The metallurgy of cast iron’, (ed. LuxB.et al.), 221; 1975, St Sephorin, Switzerland, Georgi Publishing Company.
