中文摘要：

采用Gleeble-1500热模拟试验机,对硼钢板B1500HS进行单向等温拉伸物理模拟实验,研究其热冲压流变行为。分析温度及应变速率对材料流动特性的影响,比较Hansel-Spittel和Noron-Hoff两种流变模型与实验数据的拟合精度。依据Hansel-Spittel流变模型的缺陷,提出一种修正的Hansel-Spittel流变模型（S-Hansel-Spittel）,为准确描述硼钢板B1500HS在奥氏体状态的流动特性提供帮助。

英文摘要：

Tensile experiments at constant high temperature were carried out for hot stamping of boron steels B1500HS on the test machine Gleeble-1500 to get stres~strain curves. The deformation behavior of hot stamping of boron steels B1500HS was investigated. The influence of deformation temperature and strain rate on flow characteristic was ana- lyze＆ The difference among Hansel-Spittel rheology law, Noron Hof{ rheology law and experimental data was com- pared and investigated. In order to overcome the shortcomings of Hansel-Spittel rheology law, the simplified Hansel- Spittel rheology law was proposed, which can help precisely describe the flow characteristic of boron steels B1500HS in austenitie state.