Superplastic Behavior in Magnesium Alloy with Dispersion of Quasicrystal Phase Particle

Abstract:

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Superplastic behavior was investigated using an extruded Mg-Zn-Y alloy with the dispersion of the quasicrystal phase particle in fine-grained matrix. Tensile tests showed that the low temperature superplasticity was behaved at a temperature of 473 K and maximum elongation was 462 % at 573 K in 1  10-5 s-1. The deformed microstructure observation showed that the dominant deformation process was grain boundary sliding. The present alloy also demonstrated a high possibility for secondary forming, such as superplastic forge forming. Furthermore, the forged alloy had a homogeneous microstructures, no mechanical anisotropy and uniform micro-hardness properties in any portion of a forged product.

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Periodical:

Edited by:

Daniel G. Sanders

Pages:

291-295

DOI:

10.4028/www.scientific.net/KEM.433.291

Citation:

H. Somekawa et al., "Superplastic Behavior in Magnesium Alloy with Dispersion of Quasicrystal Phase Particle", Key Engineering Materials, Vol. 433, pp. 291-295, 2010

Online since:

March 2010

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$35.00

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