绘制马氏体钢格子扭曲的映射-比较EBSD模式的不同评估方法
Grzegorz Cios1, Aimo Winkelmann1, Gert Nolze2
1Academic Centre for Materials and Nanotechnology, AGH University of Krakow, al. A. Mickiewicza 30, 30-059 Kraków, Poland.
Ultramicroscopy
|August 12, 2023
概括
两种方法,精细精度 (RA) 和模式匹配 (PM),可视化使用电子反射衍射 (EBSD) 在马氏体钢中的四角形扭曲. RA为初始调查提供了速度,而PM为c/a比率的确定提供了更高的精度.
科学领域:
- 材料科学 材料科学 材料科学
- 金工业是金工业的一个方面.
- 晶体学 晶体学是指结晶学.
背景情况:
- 马石钢表现出四角形扭曲,这对于它们的机械性能至关重要.
- 电子反射衍射 (EBSD) 是微观结构分析的一个关键技术.
- 在马石中量化四角形扭曲 (c/a比) 是必不可少的,但具有挑战性.
研究的目的:
- 为了比较基于EBSD的两种方法来可视化高碳马氏体钢中的四角形扭曲.
- 评估精细精度 (RA) 和模式匹配 (PM) 技术来确定c/a比率.
- 评估模式噪声对c/a确定准确性的影响.
主要方法:
- 精细精度 (RA) 和模式匹配 (PM) 技术在反向分散的基库奇衍射 (BKD) 模式上的应用.
- RA区分固定c/a比率,而PM使用投射变换适应连续c/a.
- 用铁钢 (c/a=1) 测试灵敏度,并比较单个与平均来评估噪声影响.
主要成果:
- 无论是RA还是PM,在马氏体微观结构中都产生了c/a比率的质量相似的图.
- 模式噪声对c/a的确定影响微不足道,即使是单个.
- RA证明了适合最初绘制马氏体c/a比率的速度和精度.
结论:
- 在高碳马石中,RA是有效的快速c/a比率映射.
- 对于定量c/a分析,PM提供了更高的精度,尽管RA的噪声可能更高.
- 这两种技术对于使用EBSD可视化马氏体钢的四角形扭曲是有价值的.
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