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首页> 外文期刊>Materials Science and Engineering >Suppressing precipitation during the reverse transformation from martensite to austenite in a cold-rolled austenite stainless steel
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Suppressing precipitation during the reverse transformation from martensite to austenite in a cold-rolled austenite stainless steel

机译：在冷轧奥氏体不锈钢中抑制从马氏体到奥氏体的逆转变换期间

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摘要

The precipitation behavior and its influence on the tensile properties of cold-rolled austenitic stainless steel, isothermally aged at 750 °C with and without a pulsed electric field, was investigated. During reverse transformation annealing, a large amount of coarse precipitate forms on the grain boundary and grain interior. However, when a pulsed electric field is applied in reverse transformation annealing, only a small amount of precipitate forms in the stainless steel; moreover, the suppressed precipitation effect did not significantly change with an increased annealing time. Simultaneously, the heat treatment comparison test at the almost same temperature clarifies that the pulsed electric field plays a critical role in inhibiting precipitate formation, rather than temperature. The corresponding mechanism reveals that the pulsed electric field disrupts the diffusion of solute Cr and Mo to the precipitate interface, which restricts precipitation growth. Furthermore, the growing precipitate is dissolved to reduce the difference in electrical resistance between the matrix and precipitate. Therefore, the precipitation behavior is strangled in the early stages with the pulsed electric field treatment, and the ductility of the cold-rolled stainless steel is further improved. The pulsed electric field was explored as a novel pathway to suppress precipitation behavior, and the results confirmed that the pulsed electric field was not only effective in impeding the precipitate growth of austenitic stainless steel, but could also be a useful technique to inhibit deleterious precipitation in other metallic materials.
机译：研究了对冷轧奥氏体不锈钢的拉伸性能的沉淀行为及其影响，在750℃下，在750℃下等温均老化。在反转变换退火期间，大量的粗沉淀物在晶界和晶粒内部形成。然而，当在反向变换退火中施加脉冲电场时，在不锈钢中只有少量的沉淀物;此外，抑制的沉淀效果不会随着退火时间的增加而显着变化。同时，在几乎相同的温度下的热处理比较试验阐明了脉冲电场在抑制沉淀形成中起着关键作用，而不是温度。相应的机制揭示了脉冲电场破坏了溶质Cr和Mo到沉淀界面的扩散，这限制了沉淀生长。此外，溶解生长沉淀物以降低基质和沉淀物之间的电阻的差异。因此，沉淀行为在具有脉冲电场处理的早期阶段中扼杀，并且进一步提高了冷轧不锈钢的延展性。脉冲电场被探索为抑制沉淀行为的新途径，结果证实，脉冲电场不仅有效地阻碍奥氏体不锈钢的沉淀生长，而且还可以是抑制有害沉淀的有用技术其他金属材料。

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  • 来源
    《Materials Science and Engineering》 |2021年第15期|140514.1-140514.12|共12页
  • 作者

    Xuebing Liu; Longge Yan; Xinfang Zhang;

  • 作者单位

    State Key Laboratory of Advanced Metallurgy School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 PR China;

    State Key Laboratory of Advanced Metallurgy School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 PR China;

    State Key Laboratory of Advanced Metallurgy School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 PR China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Austenite stainless steel; Reverse transformation; Precipitation behavior; Pulsed electric field;

    机译：奥氏体不锈钢;逆转变换;降水行为;脉冲电场;

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