Acicular ferrite transformation in alloy-steel weld metals
Journal
Journal of Materials Science
Journal Volume
26
Journal Issue
3
Pages
839-845
Date Issued
1991
Author(s)
Abstract
In this paper, the morphology of acicular ferrite in alloy-steel weld metals has been investigated. The effect of the grain size of prior austenite on acicular ferrite transformation has also been studied. It is found that acicular ferrite can form in reheated weld metals when the austenite grain size is relatively large. On the other hand, classical sheaf-like bainite will form at the same temperature if the austenite grain size is kept small. Further results strongly suggest that acicular ferrite is in fact intragranular bainite rather than intragranular Widmanstätten ferrite. © 1991 Chapman and Hall Ltd.
Type
journal article