Suppose, by rapid solidification from the liquid state, that a supersaturated
Al-8%Lialloy can be produced and subsequently aged. For the
Al-Lialloy, the composition of the
\beta is about
20.4%Liand that of the
\alpha is approximately
2%Liat 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)=%