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A simultaneous improvement of the strength and plasticity of spring steels by replacing Mo with Si

机译：用Si替换MO的同时提高弹簧钢的强度和可塑性

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摘要

A synchronous improvement of the strength and plasticity (SISP) is a significantly important subject attracted by many researchers. In this study, the key factors affecting the plasticity and strength of spring steels were analyzed and discussed in detail. Meanwhile, the differences in the microstructures and fractographies between two Cr-Mn steels were compared. It is found that the 50CrMnSiVNb spring steel has higher strength as a result of the dislocation strengthening, the solution strengthening caused by the Si solid solution as well as higher work-hardening capacity by comparing four strengthening mechanisms and work-hardening capacity. Furthermore, the better plasticity of the 50CrMnSiVNb steel may be mainly attributed to the lighter banded segregation and hydrogen embrittlement compared with the 50CrMnMoVNb steel. This study may enrich the fundamental knowledge regarding how to optimize the composition of spring steel and provide some new ideas for synchronous improvement of the strength and plasticity of spring steels.
机译：强度和塑性（SISP）的同步改善是许多研究人员吸引的重要主题。在这项研究中，分析了影响弹簧钢的可塑性和强度的关键因素并详细讨论。同时，比较了两个CR-MN钢之间的微观结构和分数的差异。结果发现，由于脱位强化，50crmnsivnb弹簧钢具有更高的强度，通过比较四种强化机制和工作 - 硬化容量，通过Si固溶体引起的溶液强化以及更高的工作硬化容量。此外，与50crmnmovnb钢相比，50crmnsivnb钢的更好的塑性可以主要归因于更轻的带状偏析和氢气脆化。本研究可以丰富有关如何优化弹簧钢组成的基础知识，并为弹簧钢的强度和可塑性提供一些新的思路。

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  • 来源
    《Materials Science and Engineering》 |2021年第13期|141516.1-141516.15|共15页
  • 作者

    B. Xia; P. Zhang; B. Wang; Y.K. Zhu; X.W. Li; Z.F. Zhang;

  • 作者单位

    Department of Materials Physics and Chemistry School of Materials Science and Engineering Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education) Northeastern University Shenyang 110819 PR China Shi-changxu Innovation Center for Advanced Materials Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 PR China;

    Shi-changxu Innovation Center for Advanced Materials Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 PR China;

    Shi-changxu Innovation Center for Advanced Materials Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 PR China;

    Shi-changxu Innovation Center for Advanced Materials Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 PR China;

    Department of Materials Physics and Chemistry School of Materials Science and Engineering Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education) Northeastern University Shenyang 110819 PR China;

    Department of Materials Physics and Chemistry School of Materials Science and Engineering Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education) Northeastern University Shenyang 110819 PR China Shi-changxu Innovation Center for Advanced Materials Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 PR China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Spring steel; Strength; Plasticity; Band segregation;

    机译：弹簧钢;力量;可塑性;乐队偏见;

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