材料变形过程中的原位电子背散射衍射(in-situ EBSD)分析

In-situ EBSD analysis on the microstructures during deformation

本文介绍一套既具备电子背散射衍射(EBSD),又具备应力加载功能的分析测试方法,简称原位EBSD。采用该系统能实现对拉伸、压缩、弯曲及剪切变形过程中材料的微观组织演变进行原位跟踪观察;可以分析材料在变形过程中的组织演变过程,获得组织演变的连续性信息,从而对研究材料变形过程中的机理及物理本质提供有力的实验依据。本文还以原位压缩过程中纯镁的微观组织演变的测试与分析为例,说明原位EBSD系统使用方法。

This paper introduced the in-situ EBSD analysis method for the microstructure observation of materials during plastic deformation. The system include a microtest system installed inside a scanning electron microscope （SEM） fitted with an EBSD camera. Microstructure evolution during tension, compression, shearing and bending could be studied by using the in-situ EBSD. And the microstracture evolutions of pure Mg under compression were investigated in this study as a sample.