二元例题3 S.J.T.0. Phase Transformation and Applications Page 11/34 R 10% 55.9% 92% 1500 白 石 30% 1400 蟑 英 (1)指出各区域所存在的是什么相？ MnO 63 40% 60% SiO2 (2)w(i02)=0.40的系统（图中R点）从17 wg×100 1000℃时的冷却曲线示意图。注明每一阶段系笃 Mn0-SiO2相图 发生了哪些变化？指出自由度数为多少？ (3)w(Si02)=0.10的系统9kg,冷却到1400℃时，液相中 含Mn0多少kg? (4)w(Si02)=0.60的合金1500℃各以哪些相存在？计 算其相对量。 SJTU Thermodynamics of Materials Fall 2011 X.J.Jin Lecture 17 Phase Diagram IV
Phase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Fall 2011 © X. J. Jin Lecture 17 Phase Diagram IV Page 11/34 二元例题 3
Ternary Diagrams S.J.T.0. Phase Transformation and Applications Page 12/34 Degrees of freedom available in the system(F): F=C-P+1 F:the number of system variables that we may freely vary,or arbitrarily fix C:components P:phase C=3 P=1,F=3 Binary 2D P=2,F=2 ↓ P=3,F=1 Ternary 3D P=4,F=0 Quaternary SJTU Thermodynamics of Materials Fall 2011 @X.J.Jin Lecture 17 Phase Diagram IV
Phase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Fall 2011 © X. J. Jin Lecture 17 Phase Diagram IV Page 12/34 Ternary Diagrams Degrees of freedom available in the system (F): F: the number of system variables that we may freely vary, or arbitrarily fix C: components P: phase F = C − P +1 C = 3 4, 0 3, 1 2, 2 1, 3 = = = = = = = = P F P F P F P F Binary Ternary 2D 3D Quaternary