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首页> 外文期刊>Journal of Materials Science >Influence of multiphase on the strain hardening behavior of 60Si2CrVAT spring steel treated by a Q-P-T process
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Influence of multiphase on the strain hardening behavior of 60Si2CrVAT spring steel treated by a Q-P-T process

机译：多相对Q-P-T过程处理60Si2crvat弹簧钢应变硬化行为的影响

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摘要

A strong strain hardening ability in ultra-high strength spring steel 60Si2CrVAT was achieved by the design of multiphase microstructures using a quenching-partitioning-tempering process. The microstructure consisted of similar to 70% martensite/bainite and similar to 30% retained austenite, which was obtained at an optimized partitioning temperature of 380 degrees C. The corresponding yield strength ratio and the product of strength and elongation were 0.81 and 34,828 MPa%, respectively. Interestingly, this sample exhibited a double-stage strain hardening characteristic with a concave-down shape, which was distinct from that of the other samples. The excellent performance of the ultra-high strength spring steel was mainly due to the interactions between the multiple phases and the stability of the retained austenite during cold deformation. This paper provides a new way of obtaining a strong strain hardening ability in ultra-high strength steels, which is expected to be applicable to the cold coiling process.
机译：通过使用淬火分配回火过程的多相微结构设计实现了超高强度弹簧钢60Si2CrVAT的强大应变硬化能力。由类似于70％马氏体/贝氏体的微观结构和类似于30％的保留奥氏体，其在优化的分配温度为380℃。相应的屈服强度比和强度和伸长率的产物为0.81和34,828MPa％ ， 分别。有趣的是，该样品表现出具有凹形形状的双级应变硬化特性，其与其他样品不同。超高强度弹簧钢的优异性能主要是由于在冷变形期间多相与保留奥氏体之间的相互作用。本文提供了一种在超高强度钢中获得强大的应变硬化能力的新方法，这预计将适用于寒冷卷取过程。

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  • 来源
    《Journal of Materials Science》 |2018年第14期|共15页
  • 作者

    Jiang Yun; Liang Yilong; Yin Chunhong; Long Shaolei; Zhao Fei; Xiao Yu;

  • 作者单位

    Guizhou Univ Sch Mech Engn Guiyang 550025 Guizhou Peoples R China;

    Guizhou Univ Coll Mat &

    Met Xibei Rd Guiyang 550025 Guizhou Peoples R China;

    Guizhou Univ Sch Mech Engn Guiyang 550025 Guizhou Peoples R China;

    Guizhou Univ Coll Mat &

    Met Xibei Rd Guiyang 550025 Guizhou Peoples R China;

    Guizhou Univ Coll Mat &

    Met Xibei Rd Guiyang 550025 Guizhou Peoples R China;

    Guizhou Univ Sch Mech Engn Guiyang 550025 Guizhou Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
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