Abstract
An experimental study with respect to the effect of melt superheat on the unidirectional solidified structure of duplex stainless steel (DSS) is reported. The results show that the melt superheat causes distinct modifications of both macrostructure and microstructure of DSS. For macrostructure of DSS, the columnar to equiaxed transition is observed at different melt superheats. The length of equiaxed zone increases and the equiaxed grain size decrease with melt superheat decreasing. For microstructure of DSS, there are significant differences in the morphology of the austenite at intragranular and boundary. In the interior of ferrite grains, the austenite appears primarily as acicular morphology. Nevertheless, the austenite takes on a widmänstatten side plate appearance at the ferrite grain boundaries. In addition, the austenite content increases with melt superheat decreasing.
Sign-in/Register to access full text options 
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.
