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首页> 外文期刊>Journal of Materials Research >Effects of Sm on microstructure and corrosion resistance of hot-extruded AZ61 magnesium alloys
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Effects of Sm on microstructure and corrosion resistance of hot-extruded AZ61 magnesium alloys

机译：Sm对热挤压AZ61镁合金组织和耐蚀性的影响

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摘要

In this study, the effects of Sm on the microstructure and corrosion resistance of hot-extruded AZ61 magnesium alloys were investigated by optical microscopy, scanning electron microscopy, and transmission electron microscopy. The results showed that uniformly dispersed Al_2Sm particles with size of ～2 μm were discovered in the hot-extruded AZ61 magnesium alloy sample modified with 1.0 wt% Sm, which promoted dynamic recrystallization grain growth during the hot-extruded process, gradually increasing the grain of the alloy as Sm content increased. The morphology of the corroded surface and the corrosion rate of the hot-extruded AZ61 magnesium alloy both were significantly improved after Sm addition. The alloy sample modified with 2.0 wt % Sm after immersion in 3.5 wt% NaCl solution for 12 h showed minimum corrosion rate value, 3.1 mg/cm~2 day, which is only 3.7% of the corrosion rate of unmodified alloy (82 mg/cm~2 day).
机译：在本研究中，通过光学显微镜，扫描电子显微镜和透射电子显微镜研究了Sm对热挤压AZ61镁合金的组织和耐蚀性的影响。结果表明，在1.0 wt％Sm改性的热挤压AZ61镁合金样品中发现〜2μm的Al_2Sm颗粒均匀分散，促进了热挤压过程中动态再结晶晶粒的生长，并逐渐增加了晶粒尺寸。随着Sm含量的增加合金。添加Sm后，热挤压AZ61镁合金的腐蚀表面形貌和腐蚀速率均得到明显改善。浸入3.5 wt％NaCl溶液中12 h后，用2.0 wt％Sm改性的合金样品的最小腐蚀速率值为3.1 mg / cm〜2天，仅为未改性合金（82 mg / cm2）腐蚀速率的3.7％。 cm〜2天）。

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  • 来源
    《Journal of Materials Research》 |2015年第23期|3671-3681|共11页
  • 作者

    Zhi Hu; Xiao Li; Qun Hua; Hong Yan; Hong Xv Qiu; Xian Ming Ruan; Zheng Hua Li;

  • 作者单位

    Institute of Advanced Forming, Department of Materials Processing Engineering, Nanchang University, Nanchang 330031, China;

    Institute of Advanced Forming, Department of Materials Processing Engineering, Nanchang University, Nanchang 330031, China;

    Institute of Advanced Forming, Department of Materials Processing Engineering, Nanchang University, Nanchang 330031, China;

    Institute of Advanced Forming, Department of Materials Processing Engineering, Nanchang University, Nanchang 330031, China;

    Institute of Advanced Forming, Department of Materials Processing Engineering, Nanchang University, Nanchang 330031, China;

    Institute of Advanced Forming, Department of Materials Processing Engineering, Nanchang University, Nanchang 330031, China;

    Institute of Advanced Forming, Department of Materials Processing Engineering, Nanchang University, Nanchang 330031, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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