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Updated: Jul 25, 2026

$Characterization of Ultra-fine Grained and Nanocrystalline Materials Using Transmission Kikuchi Diffraction$

Characterization of Ultra-fine Grained and Nanocrystalline Materials Using Transmission Kikuchi Diffraction

Published on: April 1, 2017

单晶的划痕诱导微观结构:一项FIB-TEM研究

Chenbang Zhu¹, Ying Chen¹, Keduo Xia¹

¹School of Materials, Sun Yat-sen University, Shenzhen 518107, China.

Micron (Oxford, England : 1993)

|September 26, 2025

概括

研究金属微观结构的变化后划伤揭示了不同的基结构,包括脱位细胞,超细粒,和纳米层. 这项研究有助于理解磨损机制和部落学模拟.

科学领域:

材料科学材料科学材料科学
部落学 (tribology) 是一个学科.
金工业是金工业的一个方面.

背景情况:

了解金属在划伤下微观结构的演变对于磨损和三角学至关重要.
描述子结构可以提供对材料变形机制的见解.

研究的目的:

为了充分描述 (Ni) 单晶中痕轨道和未受影响金属之间的区域的基结构演变.
为摩擦和磨损模拟提供实验数据.

主要方法:

聚焦离子束 (FIB) 显微镜用于电子透明薄膜制造.
传输电子显微镜 (TEM) 和传输基库奇衍射 (TKD) 用于详细的微观结构分析.

主要成果:

确定了四种特征性亚结构接近痕轨道:脱位细胞/ (I区),精制细胞/块 (II区),超细粒 (UFG) (III区) 和纳米层 (NL) (IV区).
使用FIB.成功制备了一个30μm × 30μm电子透明片.

结论:

这项研究揭示了微观结构进化的梯度从零开始的轨道.
这些发现为 tribology 和磨损研究中的计算建模提供了关键的实验基础.

关键词:

微观结构的演变是单一的水晶.一个叫做Scratch的游戏.

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