锻压技术

超高强度钢板热流变行为试验研究及本构模型仿真分析

英文标题：Experimental research on hot deformation behavior of ultra high strength steel and simulation analysis of the constitutive relationship

作者：李国城邓涛卢任之

单位：重庆交通大学

关键词：硼钢热流变应力-应变曲线本构模型

分类号：TG306

出版年,卷(期):页码：2016,41(3):110-115

摘要：

为研究超高强度钢板在高温下的热流变行为，以硼钢22MnB5为研究对象，利用Gleeble-1500D热模拟试验机，在600~900 ℃温度区间，分别以0.01，0.1和1 s-1的应变速率对样件进行等温拉伸试验，得到不同条件下的应力-应变关系曲线,试验表明，温度、应变速率、应变量对流变应力的影响存在相互作用。采用拟合多项式系数的方法拟合不同因素对流变应力的影响，建立硼钢22MnB5高温下的热流变行为的本构模型，计算结果与试验结果很好地吻合，验证了建立的本构关系模型能较为准确地预测不同条件下的应力-应变关系。

For boron steel 22MnB5 to research the deformation behavior of ultra high strength steel at high temperature, some isothermal uniaxial tensile tests were carried out by thermo-mechanical simulator Gleeble 1500D at the temperature range of 600-900 ℃ with strain rates of 0.01，0.1 and 1 s-1 respectively, and the stress-strain curves under different conditions were obtained. Experiments show that the influences of temperature, strain rate and strain on the flow stress are of mutual relations. In consideration of the interaction of different factors, the constitutive model of boron steel 22MnB5 at high temperature was established by polynomial fitting, and the computational data agrees well with the experimental data. Furthermore, the above model can predict the relationship between the stress and strain under the different conditions.

基金项目：

重庆市科委基础与前沿研究计划项目（CSTC2013 JCYJA0794）

李国城（1990-），男，硕士研究生通讯作者：邓涛(1982-),男，博士，副教授

参考文献：

［1］kerstr M P, Oldenburg M. Studies of the thermo-mechanical material response of a boron steel by inverse modeling[J]. Journal of Materials Processing Technology，2004，120:625-633.
［2］林建平，王立影，田浩彬，等. 超高强度钢热流变行为[J]. 塑性工程学报，2009，16(2): 180-183.Lin J P，Wang L Y，Tian H B，et al. Research on hot forming behavior of ultra-high strength steel[J]. Journal of Plasticity Engineering，2009，16(2): 180-183.
［3］马宁，胡平，武文华，等. 高强度钢板热成形本构理论与实验分析[J]. 力学学报, 2011, 43(2): 346-354.Ma N，Hu P，Wu W H，et al. Constitutive theory and experiment analysis of hotformingforhighstrength steel[J]. Chinese Journal of Theoretical and Applied Mechanics，2011, 43(2): 346-354.
［4］李辉平，赵国群，贺连芳，等. 热冲压硼钢B1500HS高温本构方程的研究[J]. 机械工程学报，2012，48(8): 21-27.Li H P，Zhao G Q，He L F，et al. Research on the constitutive relationship of hot stamping boron steel B1500HS at high temperature[J]. Journal of Mechanical Engineering，2012，48(8): 21-27.
［5］Naderi M，Durrenberger L，Molinari A，et al. Constitutive relationships for 22MnB5 boron steel deformed isothermally at high temperatures[J]. Materials Science and Engineering: A，2008，478(1): 130-139.
［6］刑忠文，包军，杨玉英，等. 可淬火硼钢板热冲压成形实验研究[J]. 材料科学与工艺，2008，16(2): 172-175.Xing Z W，Bao J，Yang Y Y，et al. Hot stamping processing experiments of quenchable boron steel[J]. Materials Science & Technology，2008，16(2): 172-175.
［7］Merklein M，Lechler J. Investigation of the thermo-mechanical properties of hot stamping steels [J]. Journal of Materials Processing Technology，2006，177(1): 452-455.
［8］董菲，李铸国. 有限元分析法确定Johson-Cook本构方程材料参数[J]. 上海交通大学学报，2011，45(11): 1657-1660.Dong F，Li Z G. Identification of Johnson-Cook constitutive model by finite element analysis[J]. Journal of Shanghai Jiaotong Nniversity，2011，45(11): 1657-1660.
［9］王智祥，刘雪峰，谢建新. AZ91镁合金高温变形本构关系[J]. 金属学报，2008，44(11): 1378-1383.Wang Z X，Liu X F，Xie J X. Constitutive relationship of hot deformation of AZ91 magnesiumalloy[J]. Actametall-Urgicasinica，2008，44(11): 1378-1383.
［10］徐春. 热成型钢高温本构数学模型研究[J]. 材料热处理技术，2012，41(14): 48-50.Xu C. Investigation on constitutive equation for high temperature ofhot stamping steel[J]. Material & Heat Treatment，2012，41(14): 48-50.
［11］Abbasi M，Saeed-Akbari A，Naderi M. The effect of strain rate and deformation temperature on the characteristics of isothermally hot compressed boron -alloyed steel[J]. Materials Science and Engineering: A，2012，538(1):356-363.
［12］孙蓟泉，李双娇，尹衍军. 高强钢先进成型技术和本构模型研究现状与发展趋势[J]. 鞍钢技术，2014，1(5): 1-6.Sun J Q，Li S J，Yin Y J. Advanced forming process for high strength steel and research status and development tendency of constitutive model[J]. Angang Technology，2014，1(5): 1-6.

服务与反馈：

【本网站尚未开通全文下载服务】【加入收藏】