Figure 9.37 is a portion of the copper-aluminum phase diagram for which only single-phase regions are labeled. Specify temperature-composition points at which all eutectics, eutectoids, peritectics, and congruent phase transformations occur. Also, for each, write the reaction upon cooling.

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1100 1000 900 800 700 72 600 500 400 12 16 20 28 (Cu) Composition (wt Al) 24 (0.) aungeadwa