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首页> 外文期刊>Materials Science and Engineering >Trade-off between tensile property and formability by partial recrystallization of CrMnFeCoNi high-entropy alloy
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Trade-off between tensile property and formability by partial recrystallization of CrMnFeCoNi high-entropy alloy

机译：CrMnFeCoNi高熵合金的部分再结晶在拉伸性能和可成型性之间取得平衡

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摘要

In this work, a high-entropy alloy of equiatomic CrMnFeCoNi was processed by vacuum induction melting followed by rolling. After cold rolling, annealing for one hour was conducted during which the annealing temperature was varied from 650 to 1000 ℃. This was done to investigate the effect of microstructure on tensile properties and stretch formability (defined as the capability of materials to undergo plastic deformation under biaxial stretching). The strengthening effect of partial recrystallization, with a remaining small fraction of sigma phase particles, led to improved yield and tensile strengths while minimizing the loss of ductility. Fully re-crystallized microstructure resulted in a slight increase in ductility, and a considerable decrease in strength, during a tensile test. On the other hand, the results for stretch formability suggest that partial recrystallization had exactly the opposite results. In this regard, the present results raise a new issue to consider when utilizing partial recrystallization for improvement of mechanical properties.
机译：在这项工作中，通过真空感应熔炼然后轧制来加工等原子态CrMnFeCoNi的高熵合金。冷轧后，进行1小时的退火，退火温度在650〜1000℃之间变化。这样做是为了研究微观结构对拉伸性能和拉伸成形性（定义为材料在双轴拉伸下承受塑性变形的能力）的影响。剩余部分σ相颗粒的部分再结晶的强化作用导致屈服强度和拉伸强度提高，同时延展性损失最小。在拉伸试验中，完全重结晶的微观结构导致延展性略有增加，强度显着下降。另一方面，拉伸成形性的结果表明部分再结晶具有完全相反的结果。在这一点上，当利用部分重结晶来改善机械性能时，目前的结果提出了要考虑的新问题。

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  • 来源
    《Materials Science and Engineering》 |2017年第4期|324-330|共7页
  • 作者

    Jae Wung Bae; Jongun Moon; Min Ji Jang; Dami Yim; Daeyong Kim; Sunghak Lee; Hyoung Seop Kim;

  • 作者单位

    Department of Materials Science and Engineering POSTECH (Pohang University of Science and Technology), Pohang 790-784, South Korea ,Center for High Entropy Alloys, POSTECH (Pohang University of Science and Technology), Pohang 790-794, South Korea;

    Department of Materials Science and Engineering POSTECH (Pohang University of Science and Technology), Pohang 790-784, South Korea ,Center for High Entropy Alloys, POSTECH (Pohang University of Science and Technology), Pohang 790-794, South Korea;

    Department of Materials Science and Engineering POSTECH (Pohang University of Science and Technology), Pohang 790-784, South Korea ,Center for High Entropy Alloys, POSTECH (Pohang University of Science and Technology), Pohang 790-794, South Korea;

    Department of Materials Science and Engineering POSTECH (Pohang University of Science and Technology), Pohang 790-784, South Korea ,Center for High Entropy Alloys, POSTECH (Pohang University of Science and Technology), Pohang 790-794, South Korea;

    Materials Deformation Department, Korea Institute of Materials Science, Changwon 641-831, South Korea;

    Department of Materials Science and Engineering POSTECH (Pohang University of Science and Technology), Pohang 790-784, South Korea;

    Department of Materials Science and Engineering POSTECH (Pohang University of Science and Technology), Pohang 790-784, South Korea ,Center for High Entropy Alloys, POSTECH (Pohang University of Science and Technology), Pohang 790-794, South Korea;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    High-entropy alloy; Partial recrystallization; Microstructure; Mechanical property; Formability;

    机译：高熵合金;部分重结晶;微观结构机械性能可成型性;

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