Publication Type
Journal
Journal Name
Metallurgical and Materials Transactions A
Publication Date
Page Numbers
1 to 9
Volume
43
Issue
529
Abstract
Electron microscopy, X-ray diffraction and atom probe tomography have been used to identify the changes which occur during the tempering of a carbide free bainitic steel transformed at 200â—¦C. Partitioning of solute between ferrite and thin-films of retained austenite was observed on tempering at 400â—¦C for 30min. After tempering at 400â—¦C and 500â—¦C for 30min cementite was observed in the form of nanometre scale precipitates. Proximity histograms showed that the partitioning of solutes other than silicon from the cementite was slight at 400â—¦C and more obvious at 500â—¦C. In both cases the nanometre scale carbides are greatly depleted in silicon.
