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首页> 外文期刊>ISIJ international >Static Tensile Deformation Behavior of a Lean Duplex Stainless Steel Studied by In Situ Neutron Diffraction and Synchrotron Radiation White X-rays
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Static Tensile Deformation Behavior of a Lean Duplex Stainless Steel Studied by In Situ Neutron Diffraction and Synchrotron Radiation White X-rays

机译：用原位中子衍射和同步辐射白色X射线研究稀薄双相不锈钢的静态拉伸变形行为

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摘要

To investigate the tensile deformation behavior of a lean duplex stainless steel (S32101) from the viewpoints of plastic deformability among phases or grains, we performed static tensile tests, in situ neutron diffraction, and white x-ray diffraction experiments at room temperature. In the static tensile tests, the S32101 steel displayed a larger uniform elongation and a better tensile strength-uniform elongation balance than a commercial SUS329J4L duplex stainless steel. A larger uniform elongation of S32101 is associated with the macroscopic work hardening behavior that a work hardening rate higher than the flow stress can maintain up until high true strains. From the experimental results of synchrotron radiation white x-ray diffraction experiments, the hard phase of S32101 was changed from the ferrite (α) phase to austen-ite (γ) one during tensile deformation. This led to a larger stress partitioning between the phases at the latter stage of deformation. From the experimental results of in situ neutron diffraction, it was found that the stress partitioning of the y phase in the S32101 was the largest among the present results. Therefore, the larger work hardening rate of S32101 can be explained by the large stress partitioning of the γ phase, that between γ and α phases and γ volume fraction.
机译：为了从相或晶粒之间的塑性变形能力的角度研究贫双相不锈钢（S32101）的拉伸变形行为，我们在室温下进行了静态拉伸试验，原位中子衍射和白X射线衍射实验。在静态拉伸试验中，与商用SUS329J4L双相不锈钢相比，S32101钢显示出更大的均匀伸长率和更好的拉伸强度-均匀伸长率平衡。 S32101的更大的均匀伸长率与宏观的加工硬化行为有关，即高于流动应力的加工硬化率可以维持到高真实应变为止。根据同步辐射白色X射线衍射实验的实验结果，在拉伸变形过程中，S32101的硬相从铁素体（α）相变为奥氏体（γ）相。这导致在变形的后期阶段之间更大的应力分配。根据原位中子衍射的实验结果，发现在当前结果中，S32101中y相的应力分配最大。因此，S32101的更大的加工硬化率可以用γ相，γ相与α相之间的较大应力分配以及γ体积分数来解释。

著录项

  • 来源
    《ISIJ international》 |2013年第7期|1260-1267|共8页
  • 作者

    Noriyuki TSUCHIDA; Taiji KAWAHATA; Eiichiro ISHIMARU; Akihiko TAKAHASHI; Hiroshi SUZUKI; Takahisa SHOBU;

  • 作者单位

    Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo, 671-2280 Japan;

    Graduate Student, University of Hyogo, 2167 Shosha, Himeji, Hyogo, 671-2280 Japan;

    Coil & Sheet Products, Automotive Products Research & Development Division, Nippon Steel & Sumikin Stainless Steel Corporation, 3434 Shimata, Hikari-city, Yamaguchi, 743-8550 Japan;

    Coil & Sheet Products, Automotive Products Research & Development Division, Nippon Steel & Sumikin Stainless Steel Corporation, 3434 Shimata, Hikari-city, Yamaguchi, 743-8550 Japan;

    Quantum Beam Science Directorate, Japan Atomic Energy Agency, 2-4 Shirakata-Shirane, Tokai, Naka, Ibaraki, 319-1195 Japan;

    Quantum Beam Science Directorate, Japan Atomic Energy Agency, 1-1-1, Sayo-Cho, Sayo-gun, Hyogo, 679-5148 Japan;

  • 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);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    duplex stainless steel; neutron diffraction; synchrotron white x-ray diffraction; stress partitioning; work hardening; stress-strain curve;

    机译：双相不锈钢;中子衍射同步加速器白X射线衍射;应力分配;工作硬化;应力-应变曲线;

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