首页|Superplastic Behavior in Magnesium Alloy with Dispersion of Quasicrystal Phase Particle
Superplastic Behavior in Magnesium Alloy with Dispersion of Quasicrystal Phase Particle
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Trans Tech Publications Ltd
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.
quasicrystallow temperature superplasticitysuperplastic formingextrusiongrain boundary sliding
Hidetoshi Somekawa、Alok Singh、Toshiji Mukai
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Structural Metals Center, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 Japan
NETL
NSTL
Trans Tech Publications Ltd
