连续热浸镀锌钢上Zn-Al-Mg镀层损伤的原位定位
In-situ localization of damage in a Zn-Al-Mg coating deposited on steel by continuous hot-dip galvanizing
AI总结：
本研究通过扫描电镜原位拉伸试验，揭示了Zn-Al-Mg镀层中孪生诱发共晶区裂纹萌生的新损伤机制，并建立了裂纹萌生与扩展的事件时序。
摘要：
Zn-Al-Mg镀层具有由枝晶相和共晶相组成的复杂微观结构。这种非均匀的相分布导致了多种变形和损伤机制。脆性相的存在促进了裂纹的萌生和扩展。本研究揭示了Zn-Al-Mg镀层的一种新的变形和损伤机制，即孪生可诱发共晶区中的裂纹萌生。通过在扫描电子显微镜中进行原位拉伸试验，清晰地建立了导致裂纹萌生和扩展的不同事件的时间顺序，这有助于建立镀层力学行为的详细表征。
英文摘要：
Zn-Al-Mg coatings are characterized by a complex microstructure with dendritic and eutectic phases. This heterogeneous phase distribution contributes to multiple deformation and damage mechanisms. The presence of brittle phases promotes crack initiation and propagation. This study reveals a new deformation and damage mechanism of a Zn-Al-Mg coating, where twinning can induce crack initiation in the eutectic region. The chronology of different events leading to crack initiation and propagation is clearly established by in-situ tensile testing in a scanning electron microscope, which helps to establish a detailed characterization of the mechanical behavior of the coating.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
