铝硅合金高周疲劳损伤的微观机理

Damage Micromechanisms of Al-Si Alloys in High Cycle Fatigue

铝硅合金被广泛应用于汽车、航空航天等领域,其在服役中常常需要承受高周疲劳载荷。对铝硅合金高周疲劳损伤微观机理的深入理解,将为铝硅合金铸造工艺的改进和疲劳寿命的预测提供重要的依据。文中在近年来国外研究成果的基础上,系统地总结了铸造缺陷、微观组成和微观特性对铝硅合金高周疲劳损伤微观机理的影响,为铝硅合金的基础研究和工程应用提供了一定的参考。

Al-Si alloys are widely used in industry, e.g. automobiles and aerospace, and often undergo High Cycle Fatigue（HCF） loadings in service environments. Understanding the damage micromechanisms of Al -Si alloys in HCF providesimportant evidences for casting process improvement and fatigue life prediction. The damage micromechanisms of Al -Sialloys in HCF are summarized in this paper by referring the recent research results abroad, and thus give references for thebasic research and engineering applications of Al-Si alloys.