Abstract
The hot ductility of normalised microalloyed steels having a variation in Mn and S content has been examined over the temperature range 700–1000°C after heating directly to the test temperature. Ductility troughs were generally found in the austenite and these became more severe on increasing the S content or decreasing the Mn content. The improvement in hot ductility on increasing the Mn content was found to be a result of grain refinement. Increasing the S content was also accompanied by grain refinement, but any improvement in the ductility associated with this refinement was offset by the detrimental effect of having a greater volume fraction of MnS inclusions at the γ boundaries, thereby promoting grain boundary sliding and cavitation. The hot ductility in the hot rolled state before normalising was also examined. Behaviour was found to be similar, but hot ductility was lower than after normalising owing to a coarser grain size.MST/1010
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
