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渣/钢反应及增al对双相钢铸态显微组织和硬度影响研究
首发时间：2024-06-06
摘要：本文针对第一代先进高强钢中780 mpa级别的双相(dp)钢，从材料的组织和性能的角度，分别对金相组织和硬度进行了研究。通过对dp钢进行渣/钢反应及增al实验，讨论其对组织及硬度的影响。通过光镜(om)、扫描电子显微镜(sem)和电子背散射衍射(ebsd)对组织进行观察，利用维氏硬度计进行硬度测试。光镜及电镜结果显示：dp铸态钢组织为马氏体及铁素体，而ebsd检测到增al后含有少部分奥氏体组织；硬度结果则显示增al会导致硬度的降低；而渣/钢反应会导致材料的硬度增加。
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study on the effect of slag/steel reaction and al addition on microstructure and hardness of dp steel as cast
abstract：in this paper, the metallographic microstructure and hardness of dual phase steel (dp steel) of 780 mpa grade in the first generation of advanced high-strength steels had been investigated from the view of material properties and microstructure, respectively. in particular, the effect on the microstructure and hardness was discussed by performing slag/steel reaction and al-enhancement experiments on dp steel. the observations of the microstructure were made using optical microscope(om)、scanning electron microscope(sem)、electron back scatter diffraction(ebsd), and the hardness tests were carried out using a vickers hardness tester. the results of om and sem showed that the main microstructures of dp cast steel were martensite and ferrite, while ebsd detected a small portion of austenite after slag/steel reaction and al addition; al addition mainly led to a decrease in hardness; while slag/steel reaction led to an increase in the hardness of the material.
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渣/钢反应及增al对双相钢铸态显微组织和硬度影响研究
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