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材料工程  2007, Vol. 0 Issue (12): 21-25    
  测试与表征 本期目录 | 过刊浏览 | 高级检索 |
45钢高温拉伸峰值应力和变形储能与Z参数的关系函数研究
黄光杰, 钱宝华, 游红
重庆大学, 材料科学与工程学院, 重庆, 400044
Functions Correlating Tensile Peak Stress and Deformation Stored Energy of 45 Steel at Elevated Temperature with Zener-Hollomon Parameter
HUANG Guang-jie, QIAN Bao-hua, YOU Hong
College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
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摘要 通过Gleeble-1500D热模拟试验机进行高温拉伸实验,变形温度范围1123~1273K,初始应变速率范围0.01~5s-1,并采用双曲正弦模型,研究了45钢在高温拉伸条件下的峰值应力、变形储能与Zener-Hollomon参数的关系函数。结果表明:峰值应力与Z参数之间能较好地满足双曲正弦关系,其激活能为336.0kJ/mol;同时,变形储能与Z参数满足ΔGD=0.1269(lnZ)2-6.8262(lnZ)+93.873函数关系,且随着应变速率的增加和变形温度的下降而上升,其值在2~20J/mol之间波动。
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黄光杰
钱宝华
游红
关键词 峰值应力关系函数Zener-Hollomon参数变形储能    
Abstract:In order to research on correlative functions of peak stress and deformation stored energy with Zener-Hollomon parameter,the elevated temperature tensile test of 45 steel was carried out at Gleeble-1500D thermal-mechanical simulator,in the range of deformation temperature 1123-1273K and initial strain rate 0.01-5s-1.And a hyperbolic sine model was also introduced.The results indicate that the hyperbolic sine relationship can satisfactorily describe the correlation between peak stress and Zener-Hollomon parameter with the activation energy of 336.0kJ/mol,while the constitutive relationship of deformation stored energy with ZenerHollomon parameter can be represented by an equation of ΔGD=0.1269(lnZ)2-6.8262(lnZ)+93.873.Furthermore,the value of deformation stored energy increases with the decreasing of deformation temperature as well as the increasing of strain rate and fluctuates within the range of 2-20J/mol.
Key wordspeak stress    correlative function    Zener-Hollomon parameter    deformation stored energy
收稿日期: 2007-01-16      出版日期: 2007-12-20
中图分类号:  TG142  
作者简介: 黄光杰(1964- ),男,博士,副教授,主要从事金属结构材料微观组织及加工工艺的研究,联系地址:重庆大学材料科学与工程学院材料加工系(400045).
引用本文:   
黄光杰, 钱宝华, 游红. 45钢高温拉伸峰值应力和变形储能与Z参数的关系函数研究[J]. 材料工程, 2007, 0(12): 21-25.
HUANG Guang-jie, QIAN Bao-hua, YOU Hong. Functions Correlating Tensile Peak Stress and Deformation Stored Energy of 45 Steel at Elevated Temperature with Zener-Hollomon Parameter. Journal of Materials Engineering, 2007, 0(12): 21-25.
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http://jme.biam.ac.cn/CN/      或      http://jme.biam.ac.cn/CN/Y2007/V0/I12/21
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