两相区的组成和数量解析 S.J.T.0. Phase Transformation and Applications Page 11/40 1050 1000 950 900 850 a1 Spinodal 800 line 760K 750 700 012 650 600 0.75 1X=0.1 xB十= 02XB=0.98 Figure 9.15 The miscibility gap,showing spinodal line. I:XB-0.2 IⅡ：XB=0.5 体系 I:3=0.2 l:x3=0.5 平衡组成 01 02 01 02 X8=0.1 3=0.9 ×3=0.1 X3=0.9 平衡相的量 718 1/8 4/8 4/8 ○T0 mhemmouyna5 o Matena5 all 2011
Phase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Fall 2011 © X. J. Jin Lecture 16 Phase Diagram III Page 11/40 两相区的组成和数量解析 760K I: xB=0.2 II: xB=0.5 α1: xB=0.1 α2: xB=0.9 体系 I：xB＝0.2 II：xB＝0.5 平衡组成 α1 α2 α1 α2 xB＝0.1 xB＝0.9 xB＝0.1 xB＝0.9 平衡相的量 7/8 1/8 4/8 4/8
Peritectic Phase Diagrams S.J.T.0. Phase Transformation and Applications Page 12/40 Peritectic transformation A liquid phase and a solid phase can combine to form an entirely new solid phase Weight percent carbon 1600 0.2 0.4 0.6 0.8 liquid+solid=solid 153BC liquid +solid,solid -24 L+Y 相律？ 1400 1394℃ yFe 1300 2 3 Fe Atomic percent carbon Figure 9.17 The binaryphase diagram for carbon(graphite)and iron. SJTU Thermodynamics of Materials Fall 2011 @X.J.Jin Lecture 16 Phase Diagram Ill
Phase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Fall 2011 © X. J. Jin Lecture 16 Phase Diagram III Page 12/40 Peritectic Phase Diagrams Peritectic transformation A liquid phase and a solid phase can combine to form an entirely new solid phase α β liquid + solid = solid 相律？ δ γ liquid + solid = solid
Mg-Pb S.J.T.0. Phase Transformation and Applications Page 13/40 Weight Percent Lead 8224060020 90 100 700 6b0c 形成稳定化合 600 物 649611c L 500 466,2 191 4D0 3275℃ 300 248.79e 63 04(Pb 200 qd28N 1D0 10 20 40 60 890 100 ME Atomie Percent Lead Pb SJTU Thermodynamics of Materials Fall 2011 @X.J.Jin Lecture 16 Phase Diagram Ill
Phase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Fall 2011 © X. J. Jin Lecture 16 Phase Diagram III Page 13/40 Mg-Pb 形成稳定化合 物