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Effects of anisotropic pore structure and fiber texture on fatigue properties of lotus-type porous magnesium

机译:各向异性孔结构和纤维织构对莲花型多孔镁合金疲劳性能的影响

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摘要

We studied the effects of anisotropic pores and fiber texture on the fatigue strength and fracture surface of lotus-type porous magnesium fabricated through unidirectional solidification in pressurized hydrogen and argon atmospheres. The fatigue strength in the direction parallel to the longitudinal axis of pores is higher than that in the perpendicular direction. Not only anisotropic pores but also fiber texture grown along the pore direction contributes to the anisotropy in the fatigue strength. The fatigue strength at finite life of lotus magnesium is closely related to the ultimate tensile strength; the fatigue strength is proportional to the ultimate tensile strength for both loadings parallel and perpendicular to the pore direction. The fracture surface of lotus magnesium is not flat, which originates from porous structure. For parallel loading, fiber texture in lotus magnesium also contributes to the irregular surface, i.e., a combination of texture and pore structure affects fracture surfaces.
机译:我们研究了各向异性孔和纤维织构对在加压氢气和氩气气氛下单向凝固制备的莲花型多孔镁的疲劳强度和断裂表面的影响。在平行于孔的纵轴的方向上的疲劳强度高于在垂直方向上的疲劳强度。不仅各向异性的孔隙,而且沿孔隙方向生长的纤维质地也有助于疲劳强度的各向异性。莲花镁有限寿命疲劳强度与极限抗拉强度密切相关。对于平行和垂直于孔方向的载荷,疲劳强度与极限抗拉强度成正比。莲花镁的断裂表面不平坦,其起源于多孔结构。对于平行加载,莲花镁中的纤维质地也有助于不规则表面,即,质地和孔结构的组合影响断裂表面。

著录项

  • 来源
    《Journal of Materials Research》 |2007年第11期|3120-3129|共10页
  • 作者

    H. Seki; M. Tane; H. Nakajima;

  • 作者单位

    The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567-0047, Japan;

  • 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);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
  • 关键词

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