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Achieving high strain rate superplasticity in Mg–Y–Nd–Zr alloy processed by homogenization treatment and equal channel angular pressing.
- Source :
-
Materials Science & Engineering: A . May2015, Vol. 633, p59-62. 4p. - Publication Year :
- 2015
-
Abstract
- Homogenization treatment and equal channel angular pressing was applied to Mg–Y–Nd–Zr alloy cast ingot. Uniform grains with a grain size of ~1.5 μm and spherical secondary-phase preferentially located at the grain boundaries were obtained. Excellent high-strain rate superplasticity of 860% and 960% was achieved at 500 °C, 1×10 −1 s −1 and 475 °C, 2×10 −2 s −1 , respectively, for the first time such a high-strain rate superplasticity was achieved in magnesium alloys processed by ECAP. The maximum elongation of 1120% was achieved at 475 °C, 3×10 −3 s −1 . They were attributed to the thermal stability of uniform fine-grain microstructure and the coordination function of secondary-phase. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09215093
- Volume :
- 633
- Database :
- Academic Search Index
- Journal :
- Materials Science & Engineering: A
- Publication Type :
- Academic Journal
- Accession number :
- 102000074
- Full Text :
- https://doi.org/10.1016/j.msea.2015.03.011