1800A 上游充通大￥ 160U叶 SHANGHAI JIAO TONG UNIVERSITY 1400F 1200外 1186 66.3 10.5 B 1000 Points:A:Tm of Pt 800 B:Tm of Ag 600 P:Peritectic point。 400L The alloy at D is called peritectic alloy(包晶合金) (x)/% 2> Line:ACB:liquid phase line ADPB:solid phase line DE:solid solution curce of Ag in Pt PF:solid solution curce of Pt in Ag DPC:horizontal,called peritectic line. The alloys on this line is under peritectic reaction:Lc+pBp Regions:three single phase regione:L、ak、β solid solution of Ag in Pt β：solid solution of Pt in Ag three double phase regions:Ltau、L+β、a+B。 7A Points：A：Tm of Pt B：Tm of Ag P：Peritectic point。 The alloy at D is called peritectic alloy(包晶合金) Line：ACB：liquid phase line ADPB：solid phase line DE：solid solution curce of Ag in Pt PF： solid solution curce of Pt in Ag DPC：horizontal, called peritectic line. The alloys on this line is under peritectic reaction: LC + αD →βP Regions： three single phase regione： L、α、β α：solid solution of Ag in Pt β：solid solution of Pt in Ag three double phase regions：L+α、L+β、α+β。 B 7