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Hu, F.; Wu, K. M. and Shirzadi, A. A.
(2012).
DOI: https://doi.org/10.1179/1743281211Y.0000000092
Abstract
The effect of cobalt and aluminium on the austenite-to-pearlite transformation in a super-bainitic steel was investigated. The experimental work showed that the transformation rate of pearlitic and the volume fraction of pearlite both were increased by adding about 4 wt. % Co and 1.5 wt. % Al to the parent super-bainitic steel. The addition of cobalt and aluminium to super-bainitic steels desirably accelerated the growth rate of pearlitic microstructure, and undesirably reduced the interlamellar spacing of pearlite; resulting in a hardness higher than that of the parent steel in the pearlitic condition. Nevertheless, the accelerated pearlitic reaction, as a softening process of the super-bainitic steels prior to machining/forming, may make the commercial use of these steels more viable.
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