热轧带钢表面氧化铁皮的EBSD制样及表征方法

为了得到适用于热轧带钢表面氧化铁皮EBSD样品的制备方法，以22MnB5热轧板表面生成的氧化铁皮为研究对象，对比分析了冷镶、热镶和夹具夹持3种样品固定方法，以及振动抛光和手工制样两种制样方法下的热轧带钢表面EBSD扫描效果。结果表明：热镶法是最适宜热轧带钢表面氧化铁皮打磨的固定方法，振动抛光和手工制样两种制样方法均可以表征热轧带钢表面氧化铁皮的形貌、相组成和晶粒尺寸等显微结构特征，且提出的手工制样方法能够在保证制样效果的同时缩短制样时间和降低成本。

EBSD sample preparation and characterization method of oxide scale on the surface of hot-rolled steel strip

In order to obtain an EBSD sample preparation method suitable for oxide scale on the surface of hot-rolled steel strips, the oxide scale generated on the surface of 22MnB5 hot-rolled sheet was selected as the research object. The surface EBSD scanning effects of hot-rolled sheet strip under three sample fixture methods (i.e., cold mounting, hot mounting and clamp clamping) and two sample preparation methods (i.e., vibration polishing and manual sample preparation) were compared. The results showed that the hot mounting method was the most suitable fixing method for polishing the surface of hot-rolled strip steel with oxide scale. Both vibration polishing and manual sample preparation methods could characterize the microstructures (such as morphology, phase composition and grain size) of oxide scale on the surface of hot-rolled steel strip. The manual sample preparation method proposed could shorten the sample preparation time and cost while ensuring the sample preparation effect.