论文标题
EBSD中高碳钢中马氏体的四边形图
Tetragonality mapping of martensite in a high-carbon steel by EBSD
论文作者
论文摘要
通过电子反向散射衍射（EBSD）解决高碳钢（1.2质量百分比）在高碳钢（1.2质量百分比）中的局部变化的四部曲，并以100nm的空间分辨率解析。与空间整合X射线衍射（产生C/A = 1.05的平均四角形）相比，允许扫描电子显微镜中的EBSD测量值在晶格参数比率C/A的局部变化范围内在1.02 $ \ leq $ C/A $ \ leq $ \ leq $ 1.07中。基于模拟与实验性EBSD模式的拟合，通过两种不同的EBSD数据分析方法证实了四边形的局部变化。所得的基于EBSD的四边形图指出，在马氏体结构的形成过程中，碳浓度和局部晶格扭曲的复杂相互作用。
The locally varying tetragonality in martensite grains of a high-carbon steel (1.2 mass percent C) was resolved by electron backscatter diffraction (EBSD) with a spatial resolution in the order of 100nm. Compared to spatially integrating X-ray diffraction, which yielded an average tetragonality of c/a=1.05, the EBSD measurements in the scanning electron microscope allowed to image a local variation of the lattice parameter ratio c/a in the range of 1.02 $\leq$ c/a $\leq$ 1.07. The local variation of tetragonality is confirmed by two different EBSD data analysis approaches based on the fitting of simulated to experimental EBSD patterns. The resulting EBSD-based tetragonality maps are pointing to a complex interaction of carbon concentration and local lattice distortions during the formation process of martensitic structures.
