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1. ¬ÛÅܪººØÃþ |
A. ÂX´²§@¥Î³y¦¨ªº¬ÛÅÜ (diffusional transformations) |
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ªR¥X (precipitation reactions) |
¦@ªR (eutectoid transformations) |
³W«h¤Æ (ordering reactions) |
¡H (massive transformations) |
¦h¬Û (polymorphic changes) |
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Spinodal Decomposition ¡V ¦¨¤À§ïÅܦӺc³y¥¼ÅÜ¡C |
B. µLÂX´²§@¥Îªº¬ÛÅÜ (diffusionless transformations) |
2. ³W«h-¤£³W«h¬ÛÅÜ (Order-Disorder Transformation) |
A.
¼ö¤O¾Ç: ³Ì¾aªñì¤l¤ÏÀ³¼Ò«¬ (nearest-neighbor interaction model ¡V regular solution model) |
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U
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If
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If
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B. ¶W´¹®æ (Superlattice): ¥u¦³·íì¤l¼Æ¤ñ¬O¤p¾ã¼Æ®É¤~¥i¯à¡C |
·í CA = CB = 50% „± §Î¦¨ ¡§AB ¶W´¹®æ¡¨ |
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3. ¬ÛÅܪº¶¥ (Order of a Phase Transformation) |
A.
¤@¶¥¬ÛÅÜ (First order Phase Transformaiton) |
¼ö¤O¾Ç¨ç¼Æªº¤@¦¸·L¤À¤£³sÄò¡C |
¨Ò¦p: ²GÅé¾®µ²¦¨©TÅ骺¬ÛÅÜ¡C |
B. ¤G¶¥¬ÛÅÜ (Second order Phase Transformaiton) |
¼ö¤O¾Ç¨ç¼Æªº¤@¦¸·L¤À³sÄò¡A¦ý¤G¦¸·L¤À¤£³sÄò¡C |
¨Ò¦p: ¶À»É¤§¤£³W«h¬ÛÅÜ¡C |
4. µLÂX´²§@¥Îªº¬ÛÅÜ¡X³Â¥Ð´²ÅK¬ÛÅÜ | ||||||||||||||||
A. ³Â¥Ð´²ÅK (Martensite) | ||||||||||||||||
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ªÎ²ÉÅKferrite (BCC, 0.01%C) | ||||||||||||||||
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B. ¬ÛÅܶ´¤Æ (Transformation Toughening) ¡V ¡§ceramic steel¡¨ | ||||||||||||||||
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¥[¤JCaO, MgO, Y2O3, CeO2, rare earth oxides. | ||||||||||||||||
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