Microstructural evolution and superplastic behavior of a fine-grained Mg–Gd alloy processed by constrained groove pressing

• Published in: Materials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 754; pp. 390 - 399
• Main Authors: Hoseini-Athar, M.M., Mahmudi, R., Prasath Babu, R., Hedström, P.
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 29.04.2019; Elsevier BV
• Subjects: Constrained groove pressing; Deformation mechanisms; Electron backscatter diffraction; Evolution; Extrusion; Gadolinium; Grain boundaries; Grain boundary diffusion; Grain boundary sliding; Grain size; Grooves; Heat treating; Magnesium base alloys; Mg-Gd alloy; Microstructure; Pressing; Scanning electron microscopy; Shear punch test; Shear strain; Strain rate sensitivity; Superplasticity; Mg–Gd alloy; Superplasticity; Shear punch test; Constrained groove pressing

In the current study, microstructural evolution and superplasticity of an extruded Mg–2wt% Gd sheet were studied after the constrained groove pressing (CGP) process. Microstructural observations by scanning electron microscopy and electron backscattered diffraction revealed that after 4 cycles of CG...