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Changes in the superplastic behavior of a Zn-Al eutectoid alloy were investigated in tension at strain rates from 2x10 -4 to 9x10 -1 s -1 at 230 o C. The silver contents were 1.0 and 6.15 wt.% Ag. The presence of the silver addition has a great influence on the stress-strain curve. The main features are the development of region 0 and an increase of the...