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首页> 外文期刊>Journal of Materials Research >Improvement of microstructure and surface behaviors of welded S50C steel components under electropulsing assisted ultrasonic surface modification
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Improvement of microstructure and surface behaviors of welded S50C steel components under electropulsing assisted ultrasonic surface modification

机译：在电脉冲辅助超声表面改性下改善S50C焊接钢构件的组织和表面性能

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摘要

The effect of electropulsing assisted ultrasonic surface modification (EUSM) on microstructure and surface properties of S50C steel welded components is investigated. Compared with conventional ultrasonic surface modification (USM) process, EUSM process achieves significant improvements in microstructure, including deeper strengthened layers and gradient microstructure on the surface. The EUSM-induced microstructure results in higher levels of surface compressive residual stress and greater surface microhardness and its effective depth. Conventional USM process is inevitably accompanied by some plastic damages, such as pit and crack defects. The damages, however, can be eliminated to some extent during the EUSM process. These enhancements may be attributed to the thermal and athermal effects caused by electropulsing treatment, which accelerates the mobility of dislocations in the dynamic recrystallization process.
机译：研究了电脉冲辅助超声表面改性（EUSM）对S50C钢焊接组件的组织和表面性能的影响。与常规的超声表面改性（USM）工艺相比，EUSM工艺在微观结构上实现了重大改进，包括更深的强化层和表面上的梯度微观结构。 EUSM诱导的微观结构导致更高的表面压缩残余应力水平，更大的表面显微硬度及其有效深度。传统的USM工艺不可避免地伴随着一些塑性损伤，例如凹坑和裂纹缺陷。但是，在EUSM过程中可以一定程度消除损害。这些增强可以归因于由电脉冲处理引起的热效应和无热效应，这加速了动态再结晶过程中位错的迁移率。

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  • 来源
    《Journal of Materials Research》 |2016年第14期|2125-2135|共11页
  • 作者

    Yongda Ye; Jie Kuang; Song-Zhu Kure-Chu; Guolin Song; Zhiyan Sun; Guoyi Tang;

  • 作者单位

    Advanced Materials Institute, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, People's Republic of China, Key Laboratory for Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, People's Republic of China;

    Advanced Materials Institute, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, People's Republic of China, Key Laboratory for Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, People's Republic of China;

    Department of Chemistry and Bioengineering, Iwate University, Iwate 020-8550, Japan;

    Advanced Materials Institute, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, People's Republic of China;

    Advanced Materials Institute, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, People's Republic of China, Key Laboratory for Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, People's Republic of China;

    Advanced Materials Institute, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, People's Republic of China, Key Laboratory for Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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