Abstract
The authors examined the properties of Mg96Zn2Y2 alloy bars made through continuous consolidation of chip using a newly developed single screw extrusion machine designed for magnesium alloy chip. Surface conditions as well as microstructure of the consolidated Mg96Zn2Y2 alloy varied depending on the die conditions. With a die inner diameter of 49 mm and die temperature of 723 K, severe plastic deformation in the die produced a fine-grain microstructure in the consolidated Mg96Zn2Y2 alloy bar. The compounds such as Mg12YZn and Mg3Y2Zn3 in the bar were also dispersed finely. Owing to its randomized crystal orientation, a secondary extruded bar made from the consolidated Mg96Zn2Y2 alloy bar showed a higher ductility than that of ingot-extruded bar. The fine-grain consolidated Mg96Zn2Y2 alloy bar exhibited an elongation of 308% at 723 K. Furthermore, the deformation characteristics were examined with the consolidated Mg96Zn2Y2 alloy bar for the purpose of determining its suitability as hot-processing material billets. The fine-grain consolidated Mg96Zn2Y2 alloy bar was compressed without cracking up to 623 K while Mg96Zn2Y2 ingot cracked. It was found that smaller grain diameter made the m-value higher.
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.
