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首页> 外文会议>International Conference on Metallurgy and Materials >HYPOEUTECTIC Al-Cu ALLOYS SUBJECTED TO SEVERE PLASTIC DEFORMATION
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HYPOEUTECTIC Al-Cu ALLOYS SUBJECTED TO SEVERE PLASTIC DEFORMATION

机译：低抗胶型Al-Cu合金经受严重的塑性变形

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摘要

In this study, hypoeutectic AlCu5 alloy and AlCu25 alloy in the as-cast condition were severely plastically deformed by extrusion combined with reversible torsion (KoBo) method to produce ultrafine grained structure. Scanning transmission electron microscopy (STEM), scanning electron microscopy (SEM) were used for microstructure characterization. Tensile test for characterization of mechanical properties were also performed. Tensile test were carried at room temperature and at temperature of 100 °C and 200 °C, with a speed of 10~(-4)s~(-1). The results shows, that the KoBo deformation allows refinement of hypoeutectic structure. Tensile tests performed at room temperature revealed, that ultimate tensile strength (ITS) were 223 MPa and 366 MPa for AlCu5 alloy and AlCu25 alloy respectively. For AlCu5 alloy and AlCu25 alloy deformed at 200 °C, the UTS were 100 MPa and 182 MPa respectively. The elongation for failure (At) for AlCu5 alloy and AlCu25 alloy at room temperature were 18 % and 5 % respectively. For samples deformed at 200 °C, the At were 29 % and 40 % respectively.
机译：在该研究中，通过挤出结合可逆扭转（Kobo）方法，挤出条件下的Hypoofectic Alcu5合金和Alcu25合金在铸造中严重塑性变形，以产生超细粒化结构。扫描透射电子显微镜（茎），扫描电子显微镜（SEM）用于微观结构表征。还进行了用于表征机械性能的拉伸试验。拉伸试验在室温和100℃和200℃的温度下携带，速度为10〜（-4）S〜（-1）。结果表明，Kobo变形允许改进低植物结构。在室温下进行的拉伸试验揭示了，即最终拉伸强度（其）分别为AlCu5合金和Alcu25合金的223MPa和366MPa。对于ALCU5合金和Alcu25合金，在200℃下变形，UTS分别为100MPa和182MPa。室温下AlCu5合金和Alcu25合金的失效（AT）的伸长分别为18％和5％。对于在200℃下变形的样品，AT分别为29％和40％。

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