材料期刊网

为403Nb叶片钢实现热连轧组织性能预报系统提供数据，采用Gleeble-3500热模拟试验机，对403Nb进行了热压缩试验。根据试验数据通过计算得出了403Nb热压缩的Z参数和流变应力方程分别为： ，σP＝14.5926ln ＋1002406.111•T－1－604.613658；对变形后的组织分析表明：403Nb动态再结晶以晶界弓出机制形核，在变形组织中有少量宽度为30~100nm的细小孪晶，基体中的NbC对位错有钉扎作用，提高了其热变形激活能。

In order to provide dates for realizing the structure and property prediction system of 403Nb blade steel hot tandem rolling, the hot compression was carried out using the Gleeble-3500. According to the experimental dates, the parameter Z and flow stress equation were worked out respectively: ，σP＝14.5926ln ＋1002406.111•T－1－604.613658. The analysis of the structure shows that the 403Nb dynamic recrystallization forms the nuclear under the bulging mechanism. There are a few thin twins with width 30~100nm. The NbC particles in the matrix can stick the dislocations, which improves the hot deformation activation energy.