Abstract
New rotary-die ECAP (RD-ECAP) was applied to a commercial Al–Si–Mg (AC4C) alloy to improve the ductility, and the microstructural developments and mechanical properties of ECAPed specimens were investigated. The as-cast Al alloy was used after machining to a cylindrical shape. ECAP was performed at 543, 603 and 673 K. The microstructure changes of samples were examined. The Vickers microhardness was measured with respect to RD-ECAP passes and the tensile test was conducted to check the high-temperature ductility. The samples after ECAP showed very clean external surface without any edge cracking. The grain size was drastically decreased and saturated into 2–3 μm after six passes because the dynamic recovery occurred during the process. After 10 passes, a very homogenous microstructure was obtained. The longation of the alloy increased from 25% to 125% after 10 passes, and the m value was 0.21 after 20 passes.
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.
