Chap.6 Fe-C Alloy
Chap.6 Fe-C Alloy
outline √Polymorphism of iron Structure and property of each component in Fe-Fe3C diagram. Establishment and anysis of Fe-FeC. The effect of carbon concentration on material structure and property. Application of Fe-Fe3C diagram
Polymorphism of iron Structure and property of each component in Fe-Fe3C diagram. Establishment and anysis of Fe - Fe3C . The effect of carbon concentration on material structure and property. Application of Fe - Fe3C diagram. outline
Carbon(C),Manganese(Mn),Silicon(Si), Phosphorus(P),Sulfur(S) Plain-carbon steel
Carbon (C), Manganese(Mn), Silicon(Si), Phosphorus(P), Sulfur(S) Plain-carbon steel
T 1600 1538℃-------- 1500 1400 1324℃-⑧-Fe_ 1300 1200 Y-Fe 1100 出 912℃ a-Fe cooling curve if pure iron
cooling curve if pure iron 1394℃ 1538℃ 1000 600 800 1200 t 1600 1500 500 700 900 1100 1300 1400 912℃ δ - Fe α - Fe γ - Fe T
Polymorphism 1394。C 912。C δ-Fe Y-Fe a Fe bcc fec bcc nucleation,grow in size change in volume (thermal stress →fracture) ·change structure by heat treatment-→ property
1394 °C 912 °C bcc fcc bcc δ - Fe γ - Fe α - Fe Polymorphism • nucleation, grow in size • change in volume (thermal stress →fracture ) • change structure by heat treatment→ property