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首页> 外文期刊>Materials Science and Engineering >Physically based constitutive analysis to predict flow stress of medium carbon and vanadium microalloyed steels
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Physically based constitutive analysis to predict flow stress of medium carbon and vanadium microalloyed steels

机译：基于物理的本构分析来预测中碳和钒微合金钢的流动应力

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摘要

Two medium carbon steel grades were used in the present investigation. One of them was microalloyed with vanadium. Both steel grades were subjected to hot compression tests on the Gleeble-1500 thermo-mechanical simulator in the temperature range of 900-1100 ℃ and strain rate range of 0.01-10 s~(-1). Constitutive relationships of both steels were investigated by the physically based approach incorporating the strain effect, which accounts for the dependence of Young's modulus and the self-diffusion coefficient of austenite on temperature. The accuracy and reliability of the equations was quantified by employing statistical parameters such as the correlation coefficient and absolute average error. The results showed that the proposed equations can predict the flow stress of the experimental steels with acceptable accuracy, thus may be an alternative method for predicting the flow stress in hot working.
机译：本研究使用了两种中碳钢。其中之一是钒微合金化。两种钢种均在900-1100℃的温度范围和0.01-10 s〜（-1）的应变速率范围内，在Gleeble-1500热机械模拟器上进行了热压缩测试。通过结合应变效应的基于物理的方法研究了这两种钢的本构关系，这解释了杨氏模量和奥氏体自扩散系数对温度的依赖性。通过使用统计参数（例如相关系数和绝对平均误差）来量化方程的准确性和可靠性。结果表明，所提出的方程式能够以可接受的精度预测实验钢的流变应力，因此可能是预测热加工中流变应力的另一种方法。

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  • 来源
    《Materials Science and Engineering》 |2014年第25期|127-133|共7页
  • 作者

    Hai-lian Wei; Guo-quan Liu; Ming-he Zhang;

  • 作者单位

    School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;

    School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China,Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing Beijing 100083, China;

    State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Medium carbon steel grades; Hot deformation; Constitutive relationships;

    机译：中碳钢牌号;热变形;本构关系;

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