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首页> 外文期刊>Materials Science and Engineering >Improvement in impression creep property of as-cast AC515 Mg alloy by Mn addition
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Improvement in impression creep property of as-cast AC515 Mg alloy by Mn addition

机译：通过添加锰改善铸态AC515镁合金的压痕蠕变性能

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摘要

The effect of Mn on the impression creep behavior and microstructure of AC515 (Mg-5Al-1.5Ca) alloy has been studied. Four alloys based on AC515 with different Mn contents 0, 0.3, 0.5 and 0.8 wt% were prepared. The study showed that the impression creep properties of AC515 alloy are significantly improved by Mn addition. Addition of Mn up to 0.5 wt% increases the impression creep resistance, whereas incorporation of 0.8 wt% Mn decreases the impression creep resistance of samples. The microstructure of AC515 alloy consists of (Mg,Al)_2Ca distributing in the α-Mg matrix. Addition of Mn causes formation of Al_8Mn_5 in matrix and interdendritic regions. The stress exponent and activation energy are in the ranges of 5-6 and 97.3-99 kJ/mol, respectively, for all alloys. The suggested creep mechanism under the experimental conditions is pipe diffusion dislocation climb.
机译：研究了Mn对AC515（Mg-5Al-1.5Ca）合金的压痕蠕变行为和组织的影响。制备了四种基于AC515的合金，其锰含量分别为0、0.3、0.5和0.8 wt％。研究表明，添加Mn可以显着改善AC515合金的压痕蠕变性能。 Mn的添加至多0.5wt％增加了抗压痕蠕变性，而0.8wt％的Mn的掺入降低了样品的抗压痕蠕变性。 AC515合金的微观组织由分布在α-Mg基体中的（Mg，Al）_2Ca组成。 Mn的添加导致在基质和树枝状区域中形成Al_8Mn_5。对于所有合金，应力指数和活化能分别在5-6和97.3-99 kJ / mol的范围内。在实验条件下建议的蠕变机理是管扩散位错爬升。

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  • 来源
    《Materials Science and Engineering》 |2013年第10期|213-220|共8页
  • 作者

    Ghasem Samimi; Shamseddin Mirdamadi; Hossein Razavi; Mohammad-Ali Boutorabi;

  • 作者单位

    School of Metallurgy and Materials Engineering, Iran University of Science and Technology (IUST), Narmak, Tehran, Iran;

    School of Metallurgy and Materials Engineering, Iran University of Science and Technology (IUST), Narmak, Tehran, Iran;

    School of Metallurgy and Materials Engineering, Iran University of Science and Technology (IUST), Narmak, Tehran, Iran;

    School of Metallurgy and Materials Engineering, Iran University of Science and Technology (IUST), Narmak, Tehran, Iran;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    AC515 alloy; Impression creep; Creep mechanism;

    机译：AC515合金;印象蠕变;蠕变机制;

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