高铬铸铁强韧化热处理工艺的研究

Research in the Technology of the High—chromium Cast—iron,Ductility Strengthened Heat—treatment

高铬铸铁通过采用二阶段奥氏体化的新工艺,韧性得到大幅度提高。试验结果表明,在硬度,残奥量与常用工艺相同情况下,冲击韧性提高30—60%.

The high—chromium cast—iron introduces the new technologh of two phases austenite so the ductility has been raised by a wide margin. The enperimental result shows that the impact ductility has been raised 30—60% in the hardness and the remained austenite are the same as usual technology case.