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首页> 外文期刊>JOM >Towards Bridging the Experimental Length-Scale Gap for Tensile Tests on Structural Materials: Lessons Learned from an Initial Assessment of Microtensile Tests and the Path Forward
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Towards Bridging the Experimental Length-Scale Gap for Tensile Tests on Structural Materials: Lessons Learned from an Initial Assessment of Microtensile Tests and the Path Forward

机译：拓宽结构材料上的拉伸试验的实验长度缩小差距：从初步评估微调节测试和前进路径中了解的经验教训

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摘要

Microtensile testing of structural materials offers several advantages over conventional mesoscale tests,including the ability to target specific areas of interest and directly correlate the mechanical response to the microstructure of the material. As this technique becomes more widely adopted, it has the potential to have a tremendous impact in the nuclear materials field. However, further work on establishing appropriate testing parameters, unifying testing procedures, and demonstrating the effectiveness of the methodology is required before microtensile tests can be used to replace mesotensile tests for the qualification of materials for use in reactor environments. As a first step towards bridging the experimental length-scale gap for tensile tests, we conducted micro- and mesotensile tests on polycrystalline 304 stainless steel and directly compared the test data to identify the size scaling behavior in such material. Comparison of the results obtained on these two length scales clearly illustrates the specimen size effect, with smaller being stronger. The paper discusses the limitations of microtensile testing, outlines the challenges involved in interpretation of its results, and lists the lessons learned through the process.
机译：结构材料的显微调制测试提供了与传统的Messcale测试的若干优点，包括靶向特定感兴趣区域的能力，并直接将机械响应与材料的微观结构相关联。由于这种技术变得更广泛地采用，因此它有可能对核材料领域产生巨大影响。然而，在微调试验可用于替代用于反应器环境的材料资格的鉴定性测试之前，需要进一步制定适当的测试参数，统一测试程序和证明方法的有效性。作为跨越抗拉伸试验的实验长度缩小差距的第一步，我们对多晶304不锈钢进行了微观和间晶瘤测试，并直接比较了测试数据以识别这种材料中的大小缩放行为。在这两个长度上获得的结果的比较清楚地说明了样品尺寸效应，更小。本文讨论了微调制测试的局限性，概述了对其结果解释所涉及的挑战，并列出了通过该过程中学到的经验教训。

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  • 来源
    《JOM》 |2020年第1期|共10页
  • 作者

    Ajantiwalay Tanvi; Vo Hi; Finkelstein Ryan; Hosemann Peter; Aitkaliyeva Assel;

  • 作者单位

    Univ Florida Dept Mat Sci &

    Engn 176 Rhines Hall POB 116400 Gainesville FL 32611 USA;

    Univ Calif Berkeley Dept Mat Sci &

    Engn Berkeley CA 94720 USA;

    Univ Florida Dept Mat Sci &

    Engn 176 Rhines Hall POB 116400 Gainesville FL 32611 USA;

    Univ Calif Berkeley Dept Mat Sci &

    Engn Berkeley CA 94720 USA;

    Univ Florida Dept Mat Sci &

    Engn 176 Rhines Hall POB 116400 Gainesville FL 32611 USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 有色金属冶炼;金属学与金属工艺;
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