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首页> 外文期刊>Materials Science and Engineering >Effect of precipitation during parent phase aging on the microstructure and properties of a refined CuAlMn shape memory alloy
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Effect of precipitation during parent phase aging on the microstructure and properties of a refined CuAlMn shape memory alloy

机译：母相时效过程中沉淀对精制CuAlMn形状记忆合金组织和性能的影响

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摘要

Effect of precipitation during parent phase aging on the microstructure and properties of a CuAlMn shape memory alloy (SMA) refined by CuZr inoculant was investigated by means of scanning electron microscopy (SEM), X-ray diffraction (XRD), differential scanning calorimetry (DSC), Vickers hardness tester (VHT) and dynamic mechanical analyzer (DMA). It was found that after aging in parent phase at relatively low temperatures, such as 500 °C, the precipitation of α phase and γ2phase in the CuAlMn SMA was uncontrollable because it was highly sensitive to aging time. While the aging in the temperature range of 530–620 °C could give rise to controllable precipitation, and by optimizing the microstructures in this way, the hardness and damping of the CuAlMn SMA could be significantly improved. Therefore, proper aging treatment is a convenient and feasible method to control the microstructure and properties of the Cu-based SMAs.
机译：通过扫描电子显微镜（SEM），X射线衍射（XRD），差示扫描量热法（DSC）研究了母相时效过程中沉淀对CuZr孕育剂精制的CuAlMn形状记忆合金（SMA）组织和性能的影响。 ），维氏硬度计（VHT）和动态机械分析仪（DMA）。发现在相对较低的温度（例如500 temperaturesC）下，在母相中进行时效处理后，CuAlMn SMA中的α相和γ2相的析出是不可控制的，因为它对时效时间高度敏感。虽然在530–620 C的温度范围内时效会导致可控的析出，并且通过以这种方式优化微观结构，可显着提高CuAlMn SMA的硬度和阻尼。因此，适当的时效处理是控制铜基SMA的微观结构和性能的便捷可行的方法。

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  • 来源
    《Materials Science and Engineering》 |2018年第8期|124-131|共8页
  • 作者

    Zhixian Jiao; Qingzhou Wang; Fuxing Yin; Chunxiang Cui;

  • 作者单位

    Key Laboratory for New Type of Functional Materials in Hebei Province, School of Materials Science and Engineering, Hebei University of Technology;

    Key Laboratory for New Type of Functional Materials in Hebei Province, School of Materials Science and Engineering, Hebei University of Technology;

    Key Laboratory for New Type of Functional Materials in Hebei Province, School of Materials Science and Engineering, Hebei University of Technology;

    Key Laboratory for New Type of Functional Materials in Hebei Province, School of Materials Science and Engineering, Hebei University of Technology;

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  • 正文语种 eng
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  • 关键词

    Shape memory alloy; Aging; Controllable precipitation; Damping; Shape memory effect;

    机译：形状记忆合金;时效;可控析出;阻尼;形状记忆效应;

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