摘要
镁合金中添加稀土元素会形成一种长周期堆垛有序(LPSO)结构,这种特殊第二相的存在可以显著提高镁合金的力学性能和腐蚀性能.早期对镁合金的研究都集中在力学性能的研究,镁合金显微组织对其腐蚀性能的影响并没有更深入的了解.LPSO相在镁合金腐蚀过程中的作用还需要进一步研究.总的来说影响含LPSO相镁合金腐蚀行为的因素主要包括镁合金基体合金元素、加工工艺、LPSO相的类型、体积分数和分布.
Abstract
The addition of rare earth elements to magnesium alloys will form a long-period stacking or-der(LPSO)structure,and the existence of this special second phase can significantly improve the me-chanical properties and corrosion properties of magnesium alloys.The early research on magnesium alloys focused on the study of mechanical properties,and the influence of the microstructure of magnesium al-loys on their corrosion properties was not further understood.The role of LPSO phase in the corrosion process of magnesium alloys needs to be further studied.In general,the factors influencing the corrosion behavior of magnesium alloys containing LPSO phase mainly include magnesium alloy matrix,alloying elements,processing technology,type,volume fraction and distribution of LPSO phase.
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