Figure 12-31 shows a hypothetical phase diagram. Determine whether each of the following alloys might be good candidates for age hardening, and explain your answer. For those alloys that might be good candidates, describe the heat treatment required, including recommended temperatures.
(a) A-10% B
(b) A-20% B
(c) A-55% B
(d) A-87% B; and
(e) A-95% B