Effect of Mg Addition on the Ferrite Grain Boundaries Misorientation in HAZ of Low Carbon Steels
Effect of Mg Addition on the Ferrite Grain Boundaries Misorientation in HAZ of Low Carbon Steels
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DOI：
10.1016/s1005-0302(11)60058-3
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发表时间：
2011-03
影响因子：
10.9
通讯作者：
K. Zhu;Zhenguo Yang
中科院分区：
文献类型：
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作者：
K. Zhu;Zhenguo Yang
研究了镁处理与铁素体晶界择优取向的关系。本工作采用了基于电子背散射衍射技术(EBSD)的定向成像显微技术。结果表明，添加0.005%(质量分数)的镁可显著提高针状铁素体在大角度晶界的比例，这主要是由于镁处理使第二相粒子形核所致。EBSD技术为表征和量化铁素体晶界取向不良提供了一种强有力的手段，以便将其与韧性联系起来。
The relation between the Mg treatment and ferrite grain boundaries misorientation was investigated. The orientation imaging microscopy technique based on electron backscattered diffraction technique (EBSD) was used in this work. It was found that the addition of 0.005 wt% Mg to the steel could evidently increase the ratio of acicular ferrite crystals appearing at large angles boundaries to each other, which was attributed to the nucleation of the second-phase particles by the Mg treatment. The EBSD techniques provide a powerful method to characterize and quantify the ferrite grain boundaries misorientation, in order to relate it to toughness.