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High Temperature Tensile Properties of a Mg-8%Li Alloy Shear-Strained by Torsion Working and ECAP

High temperature tensile test was performed by using a Mg-8%Li alloy to give an equal shearing strain by torsion working and ECAP under the various strain rates at 473 K. Elongation to failure of Mg-8%Li alloy strained by torsion working was bigger than that of same alloy strained by ECAP. The difference of elongation to failure showed that it originates in the formation of cavity, shape of a phase and width of a and βphases measured vertically in the tensile direction.