ENGIN 45 Midterm: e45-fa2000-mt2-Gronsky-exam
Document Summary
Please use only the pages given here, and write your answers in the spaces provided. Use the grid below to draw the al-li phase diagram based upon the following experimental observations (all compositions in weight %). Pure al melts at 660 c; pure li melts at 181 c. At 600 c, liquid of 10 %li solidifies to form phase of 4 %li and phase of 20 %li. Pure phase containing 20 %li melts congruently at 718 c. At 521 c, phase containing 34 %li melts to form phase of 24. At 620 c, a 30 % li alloy has equal parts of liquid phase and phase, while at 260 c, a 60 %li alloy has equal parts of liquid phase and phase. At 179 c, liquid containing 98 %li solidifies to form phase (34 %li) and phase (99 %li). At 0 c, al can dissolve up to 3 % li, while li can dissolve no more than.
