【摘要】 本文用三次样条函数描述了钢的过冷奥氏体等温转变曲线，在微机上建立了ＴＴＴ曲线数据库，实现了ＴＴＴ曲线的数据形式存储与动态调用，操作简单、直观，占用计算机存储空间小。并进一步用等温转变动力学公式计算出过冷奥氏体等温转变过程中任意转变量曲线，与手册中的曲线吻合得很好。更多还原

【Abstract】 The isothermal transformation diagrams of supercooled austenite are described by cubic spline functions.The database of TTT diagrams is set up on computer which bring about the storage in data style and the dynamic call of TTT diagrams.The operation is very simple and visual.The storage area it used is also very small.The arbitrary transformation curves which are calculated by isothermal transformation kinetic equations fit the curves in the manual well.更多还原