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首页> 外文期刊>Materials Science and Engineering >Microstructure evolution and mechanical performance of ternary Zn-0.8Mg-0.2Sr (wt.%) alloy processed by equal-channel angular pressing
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Microstructure evolution and mechanical performance of ternary Zn-0.8Mg-0.2Sr (wt.%) alloy processed by equal-channel angular pressing

机译：通过相等通道角压加工三元Zn-0.8mg-0.2SR（WT.％）合金的微观结构演化与机械性能

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摘要

In this study, we prepared a 2n-0.8Mg-0.2Sr (wt. %) alloy and processed it by ECAP. The evolution of the microstructure during the processing was observed and discussed in detail. The obtained results revealed the continuous dynamic recrystallization as the prevailing recrystallization mechanism. It affected all the aspects of the microstructure, namely the grain size, residual stresses, and dislocation arrangement. The obtained grain size was in good agreement with both empirical and theoretical relations predicting the minimal (0.4-0.6 μm) and average (2.5 μm) grain size. The compressive tests revealed the relations between alignment of the intermetallic regions, texture of the Zn matrix, and resulting mechanical performance of the material. The compressive yield strength of the material ranged from 230 to 250 MPa in the individual directions, and the tensile yield strength reached the value of approximately 200 MPa. The resulting mechanical properties were almost isotropic in the individual directions and fulfilled the basic requirements for applications in implantology, particularly, for maxillofacial, cranial or orthopaedic implants.
机译：在这项研究中，我们制备了2n-0.8mg-0.2sr（重量％）合金并通过ECAP加工。观察到在处理过程中微观结构的演变并详细讨论。所得结果显示连续的动态再结晶作为主要的再结晶机制。它影响了微观结构的所有方面，即粒度，残余应力和位错布置。获得的晶粒尺寸与预测最小（0.4-0.6μm）和平均（2.5μm）粒度的实证和理论关系吻合良好。压缩试验揭示了金属间区域对准与Zn矩阵的质地之间的关系，并导致材料的机械性能。材料的压缩屈服强度在各个方向上的230至250MPa范围内，拉伸屈服强度达到约200MPa的值。所得到的机械性质在各个方向上几乎各向同性，并且满足了植入物质中应用的基本要求，特别是对于颌面，颅骨或整形外科植入物。

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  • 来源
    《Materials Science and Engineering》 |2021年第8期|141809.1-141809.14|共14页
  • 作者

    Jan Pinc; Andrea Skolakova; Petr Vertat; Jan Duchon; Jiri Kubasek; Pavel Lejcek; Dalibor Vojtech; Jaroslav Capek;

  • 作者单位

    FZU - Institute of Physics of the Czech Academy of Sciences Na Slovance 1999/2 Prague 8 182 21 Czech Republic Department of Metals and Corrosion Engineering University of Chemistry and Technology Prague Technicka 5 Prague 6 166 28 Czech Republic;

    FZU - Institute of Physics of the Czech Academy of Sciences Na Slovance 1999/2 Prague 8 182 21 Czech Republic;

    FZU - Institute of Physics of the Czech Academy of Sciences Na Slovance 1999/2 Prague 8 182 21 Czech Republic;

    FZU - Institute of Physics of the Czech Academy of Sciences Na Slovance 1999/2 Prague 8 182 21 Czech Republic;

    Department of Metals and Corrosion Engineering University of Chemistry and Technology Prague Technicka 5 Prague 6 166 28 Czech Republic;

    FZU - Institute of Physics of the Czech Academy of Sciences Na Slovance 1999/2 Prague 8 182 21 Czech Republic;

    Department of Metals and Corrosion Engineering University of Chemistry and Technology Prague Technicka 5 Prague 6 166 28 Czech Republic;

    FZU - Institute of Physics of the Czech Academy of Sciences Na Slovance 1999/2 Prague 8 182 21 Czech Republic;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    ECAP; Biodegradable zinc alloys; Strain hardening; Texture; Microstructure;

    机译：生态;可生物降解的锌合金;菌株硬化;质地;微观结构;

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