2.2合金的结晶 2.2.3铁碳合金的结晶 2、合金的平衡 (equilibrium)结晶过程 Industrial pure iron 538 1500 1495 Hypoeutectoid 148o0 0,53 1300 steel L ++Fe3C 1227 1200 L十Y Eutectoid steel 1100 E1148 1000 2-11 Hypereutectoid 900 91 y+Fe3C steel 800 700 727 Hypoeutectic 600 white cast iron 500 400 300 a+Fe3C Eutectic 200 white cast iron 100 Hypereutectic 2 .5 6.69 w(C)/6 white cast iron 图2-29 Fe-Fe,C相图2、合金的平衡（equilibrium）结晶过程 2.2 合金的结晶 2.2.3 铁碳合金的结晶 Industrial pure iron Eutectoid steel Hypoeutectoid steel Hypereutectoid steel Eutectic white cast iron Hypoeutectic white cast iron Hypereutectic white cast iron