A hypothetical phase diagram is shown in Figure 11-26.

(a) Are any intermetallic compounds present? If so, identify them and determine whether they are stoichiometric or nonstoichiometric.
(b) Identify the solid solutions present in the system. Is either material A or B allotropic? Explain.
(c) Identify the three-phase reactions by writing down the temperature, the reaction in equation form, the composition of each phase in the reaction, and the name of the reaction.

Transcribed Image Text:

Temperature (°C) 1200 1100 1000 900 800 700 600 500 400 300 200 100 0 8 A a+L₁ α+ 0 L₁ 20 L₁ + 1₂ α+ 1₂ 0 a + ß 42 y+h₂₂ Y+ B+L₂ 0+ ß 0+1 40 60 Weight percent B 80 [y+B В B+n 17 B