【摘要】 通过研究 F e3A l基合金经不同时间渗碳后其室温力学性能和高温力学性能的变化 ,发现碳的渗入使合金的强度与延伸率都有所下降 ,同时 F e3A l合金的有序转变温度 Tc升高 .C以固溶形式进入F e3A l合金 ,当 C渗入量超过其固溶度时 ,将在晶界处析出碳化物从而降低合金的强度与塑性更多还原

【Abstract】 The mechanical properties of Fe\-3Al\|based alloys at room temperature and high temperature were studied after carburizing upon different time.It is discovered that carburation decreases the strength and ductility and increases the order\|transition temperature of the alloys.Carbon infiltrates into Fe\-3Al alloy by the form of solid solution and when carbon infiltration amount is over, its solid solubility,carbides will precipitate at the grain boundaries,thus decreases the strength and ductility of the alloy.更多还原