Abstract
The plastic behaviour at room temperature of magnesium and magnesium metal matrix composites reinforced with yttria particles of two sizes is studied. All the materials are produced by powder metallurgy. During extrusion both the unreinforced magnesium and the composites develop a fibre texture with the { 1 0 1 ¯ 0 } planes perpendicular to the extrusion direction. The fibre intensity decreases as the volume fraction of yttria particles increases. A tension/compression asymmetry is observed. The extrusion texture prevents deformation by the basal slip system in both tension and compression. Deformation in the { 1 0 1 ¯ 2 } 〈 1 0 1 ¯ 1 〉 twinning system is only possible in compression. As the volume fraction of yttria particles increases, the texture becomes more random and the tension/compression asymmetry tends to decrease and is eventually reversed. The composites reinforced with the smallest ceramic particles present the highest yield stress.
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.
