Abstract
Low temperature superplastic behavior of a a magnesium alloy, ZK60, was investigated at about half the absolute melting point. The grains were equiaxed and the average size was 6.5μm. The tensile tests revealed that the material exhibited low temperature superplasticity (LTSP) with elongation-to-failure of over 400%. While the experimental variables in the constitutive equation for superplasticity, stress exponent and activation energy, were characterized. The strain rate was proportional to the second power of stress. The activation energy was close to that for grain boundary diffusion in magnesium. It is suggested that the deformation mechanism for LTSP is grain boundary sliding controlled by grain boundary diffusion as well as high temperature superplasticity (HTSP).
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.
