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首页 > 过刊浏览>2018年第41卷第4期 >63-70. DOI:10.11835/j.issn.1000-582X.2018.04.008
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碳钢高温变形两相区流变应力行为预测
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中图分类号:

TF761

基金项目:

上海市浦江人才计划（16PJ1430200）。


Prediction of flow stress behavior in two-phase region of carbon steel deformed at elevated temperature
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    摘要:

    部分钢铁材料在两相区高温变形时，流变应力往往不随变形温度升高而降低，而是在两相区内出现流变应力的谷值。为了弄清主要化学成分对两相区内流变应力行为的影响，通过热模拟压缩试验研究不同成分钢铁材料在两相区附近的变形行为，分析变形后的金相组织以及两相区附近流变应力的变化，获得铁素体相变开始温度Ar3和两相区内流变应力的降幅。通过回归拟合得到C、Si和Mn等主要合金元素对铁素体相变开始温度Ar3以及流变应力降幅的影响关系。

    Abstract:

    Flow stress usually does not decrease with the increase of the deformation temperature of steel deformed at high temperature in two-phase region, and the minimum value of the flow stress will be found in the two-phase region. In order to find out the effect of chemical compositions on the flow stress behavior in the two-phase region, the deformation behavior of studied steels near two-phase region is researched by thermal simulation test. Meanwhile, the microstructures after deformation and the change of flow stress near the two-phases region are analyzed. The ferrite phase transformation start temperatures and the decrease of flow stress in two-phases region are obtained. The influence of main alloying elements such as C, Si and Mn on the ferrite transformation start temperature Ar3 and the decrease of flow stress are obtained by regression fitting.

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张所全,焦四海,王全胜,王国栋.碳钢高温变形两相区流变应力行为预测[J].重庆大学学报,2018,41(4):63-70.

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  • 收稿日期:2018-01-10
  • 在线发布日期: 2018-05-06
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