锻压技术

一种超高强硼钢板B1500HS奥氏体状态流变模型

英文标题：Rheology law of ultra-high strength boron steels in austenitic state

作者：原政军唐炳涛耿宗亮王兰城张观耀

单位：山东建筑大学

关键词：超高强硼钢板流变模型奥氏体

分类号：TG115

出版年,卷(期):页码：2012,37(4):148-152

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。

Tensile experiments at constant high temperature were carried out for hot stamping of boron steels B1500HS on the test machine Gleeble-1500 to get stress-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 analyzed. The difference among Hansel-Spittel rheology law, Noron-Hoff rheology law and experimental data was compared 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 austenitic state.

基金项目：

国家自然科学基金资助项目（51005137/51175302）；中国博士后特别资助项目（201104585）；山东省自然科学基金资助项目（ZR2010EQ025）

原政军（1965-）男，专科，实验师；通信作者：唐炳涛

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