Abstract
Sliding of grain groups occurs during superplastic stretching of 7475 aluminium alloy with a spherical punch. Such co-operative grain boundary sliding (CGBS) is accompanied by cavity formation in intersection sites of CGBS surfaces, formation of striated bands and migration of sliding grain boundaries. Fibres were observed evolving from the striated bands between grains separated due to CGBS. This fibring process anticipates extreme ductility of the material and could be considered as “microsuperplasticity” originating from operation of a diffusion-like process or incipient melting.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Published version (
Free)
Free) 
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 call
