Suppose, by rapid solidification from the liquid state, that a supersaturated
Al-8%Li
alloy can be produced and subsequently aged. For the
Al-Li
alloy, the composition of the
\beta
is about
20.4%Li
and that of the
\alpha
is approximately
2%Li
at a typical aging temperature or at room temperature. Compare the amount of
\beta
that will form in this alloy with that formed in a 2090 alloy. The 2090 alloy contains
2.4%Li
. (Express your answer to three significant figures.)
%\beta _(A1-8%Li)-%\beta _(2090)=%