| 一种调质50SiMnVB钢Johnson-Cook本构模型的建立 |
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| 引用本文： | 常列珍,潘玉田,张治民,薛勇.一种调质50SiMnVB钢Johnson-Cook本构模型的建立[J].兵器材料科学与工程,2010,33(4):68-72. |
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| 作者姓名： | 常列珍 潘玉田 张治民 薛勇 |
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| 作者单位： | 中北大学,理学院,山西,太原,030051;中北大学,机电工程学院,山西,太原,030051;中北大学,材料科学与工程学院,山西,太原,030051 |
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| 摘 要： | 研究正火、正火+淬火+中/低温回火、调质处理的50SiMnVB钢的硬度及微观组织,发现50SiMnVB钢通过860℃×120 min(油冷)淬火+600℃×60 min(水冷)回火这种调质工艺处理后,具有较好的综合力学性能。利用电子万能材料试验机和SHPB实验装置对这种调质工艺处理后的50SiMnVB钢常温下的准静态和动态力学特性进行了测试,得出材料在不同应变率下的应力-应变曲线;采用参数识别法和最小二乘法建立了调制50SiMnVB钢较宽应变率下的Johnson-Cook本构模型,和实验结果吻合较好。
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| 关 键 词： | 调质 50SiMnVB 钢 Johnson-Cook 本构模型 最小二乘法 |
Johnson-Cook constitutive model for hardened and tempered 50SiMnVB steel |
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| CHANG Liezhen,PAN Yutian,ZHANG Zhimin,XUE Yong.Johnson-Cook constitutive model for hardened and tempered 50SiMnVB steel[J].Ordnance Material Science and Engineering,2010,33(4):68-72. |
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| Authors: | CHANG Liezhen PAN Yutian ZHANG Zhimin XUE Yong |
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| Affiliation: | CHANG Liezhen1,PAN Yutian2,ZHANG Zhimin3,XUE Yong3(1.School of Sciences,North University of China,Taiyuan 030051,China,2.School of Mechanical & Electrical Engineering,3.School of Materials Science and Engineering,China) |
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| Abstract: | The hardness and microstructure of 50SiMnVB steel under normalizing,normalizing+quenching+tempering,hardening and tempering were analyzed.It is shown that the hardened and tempered 50SiMnVB steel under 860 ℃×120 min quenching(oil cooling)+600 ℃×60 min tempering(water cooling) possesses better comprehensive mechanical property.The quasi-static and dynamic properties of the hardened and tempered 50SiMnVB steel are tested by using the electronic universal material testing machine and split hopkinson pressure bar,and true stress-strain curves at several strain rates were obtained.Johnson-Cook constitutive model of the hardened and tempered 50SiMnVB steel were established by identification of parameters and least square method,which shows good agreement with the results of the experiments. |
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| Keywords: | Johnson-Cook |
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