Recently, it has been found that some mechanically alloyed (MA) aluminum al
loys exhibit superplasticity at higher strain rates of more than 1 s(-1). I
n general, metallic powders are used as raw materials in the development of
superplastic alloys by the MA methods. Powder material is generally more e
xpensive than ingot material MA by vibratory ball mill was conducted using
comparatively cheap Al foil material under various milling time conditions.
The properties of the MA materials were investigated by tensile tests in s
everal strain rates. As a result, high-speed superplastic material was obta
ined in a quarter of the milling time and at 16% of the cost required to de
velop the same qualities using Al powder. (C) 2001 Elsevier Science B.V. Al
l rights reserved.