Abstract
In this study the effect of twin-roll casting (TRC) producing conditions on microstructure and mechanical properties of Al-7075 alloys has been investigated in detail. When introducing an electric pulse (EP) of 400I peak current and 30Hz into the conventional TRC process, the dendrites are refined and equiaxed accompanied by thick segregation bands beingabated. The most uniform structure of 7075 alloy is obtained after applying a static magnetic field of 0.2T at the same time. EDS spectrum analysis shows that the netlike T (AlZnMgCu) phase is resolved while the mixture of η (MgZn2) and CuMg2 phases improves. Moreover the increase in solute diffusivity is due to the modification of heat and mass convections by the incoming EP energy, facilitating the realization of excellent mechanical properties. The tensile tests reveal that the optimum process, in which the highest strength and ductile manner were obtained, is considered to be EP electromagnetic TRC modification.
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.
