Contents of Today S.J.T.0. Phase Transformation and Applications Page 1/34 Review previous Examples Ternary system Review of phase diagrams etc. 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 1/34 Contents of Today Review previous Examples Ternary system Review of phase diagrams etc
Summary of Binary Phase Diagrams S.J.T.0. Phase Transformation and Applications Page 2/34 ① ② ③ 4 I- ⑤ ⑥ ⑦ x 图6-25二元相图的7种基本类型 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 2/34 Summary of Binary Phase Diagrams
Ternary Phases Reaction in Binary Systems ww S.J.T.0. Phase Transformation and Applications Page 3/34 表6-1二元系的各种三相平衡反应 转变类型 反应式 图型特征 共晶转变 I-a+B 共析转变 Y=a+8 a 、B 共晶型 偏晶转变 h=h+a h a 熔晶转变 6=l+y Y 包晶转变 I+B-a a 包晶型 包析转变 Y+8=a B a 合晶转变 l+h=a a 、2 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 3/34 Ternary Phases Reaction in Binary Systems
相图的用处 S.J.T.0. Phase Transformation and Applications Page 4/34 处理系统是多种物质的复杂系统 -相律 一相图 说明系统在不同条件下以哪几相共存；当温 度、压力、组成改变时会出现什么相变化 各相存在的范围，相变发生的条件等 探索新材料 分析合金组织、化学成分、制定生产和热处理工艺的重 要依据！ 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 4/34 相图的用处 • 处理系统是多种物质的复杂系统 – 相律 – 相图 说明系统在不同条件下以哪几相共存；当温 度、压力、组成改变时会出现什么相变化 各相存在的范围，相变发生的条件等 探索新材料 分析合金组织、化学成分、制定生产和热处理工艺的重 要依据！
相图的用处2 S.J.T.0. Phase Transformation and Applications Page 5/34 区域熔炼提纯 M 液相 析出固溶体杂质的含 固溶体 量比平衡液相的少 20B 图5-15 区域熔炼示意图 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 5/34 相图的用处 2 区域熔炼提纯 析出固溶体杂质的含 量比平衡液相的少