Abstract
Al 19%Sn 1%Cu (SAE 783) and Al 12%Sn 2.5%Si (SAE 788) alloys are ductile triboalloys which are produced by thin-slab casting followed by cold rolling. For SAE783, rolling defects are rare and generally associated to gross defects in the cast microstructure. SAE 788 forms the metastable β-AlFeSi phase, creating a brittle network within the microstructure. Heat treatment of the as-cast slabs allows reducing the effect of this phase by a reduction in its volume fraction and a change of composition, but this is a slow process. Instead, modification of the casting procedures, according to well-established rules for the production of sound aluminium castings, together with the use of base material of higher purity were shown to be equally efficient in the prevention of rolling defects. The heat treatment could then be omitted while rolling defects were eliminated.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.