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L
α
β
X
17.3 cm
7.8 cm
18.4 cm
5.5 cm
13 cm
3.3 cm
x100
%α =
7.8
17.3
= 45%
%β =
5.5
18.4
= 30%
%L =
3.3
13
= 25%
Finding Proportions of Each Phase from Tie Triangles
Choose a phase to find its proportion in alloy X