Observation of Inhomogeneous Deformation in a Cold-Rolled Ti-added Ultra-Low Carbon Steel using High-Precision Markers Drawn by Focused Ion Beam
Observation of Inhomogeneous Deformation in a Cold-Rolled Ti-added Ultra-Low Carbon Steel using High-Precision Markers Drawn by Focused Ion Beam
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使用聚焦离子束绘制高精度标记观察冷轧加钛超低碳钢的不均匀变形
DOI：
10.1088/1757-899x/1121/1/012008
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
T Ichie and K Murakami
中科院分区：
文献类型：
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作者：
T Morikawa;R Kurosaka;M Tanaka;T Ichie and K Murakami
利用扫描电镜和扫描电镜- ebsd技术，对冷轧后超低碳钢中变形不均匀性的发展进行了研究。特别注意了晶体中应变分布的发展。观察了轧制厚度减薄60%后板材的纵向组织和取向分布，选择了α-纤维和γ-纤维等取向较优的晶粒。为了研究这些晶粒在冷轧过程中的局部应变分布，利用聚焦离子束绘制了直径为0.3 μm的高精度点标记。然后，在进行额外的轧制之前，薄板在平面应变条件下被安装到由相同钢材制成的框架中。采用标记法，直接测量了冷轧过程中晶粒的局部位移。
The development of deformation inhomogeneities in ultra-low carbon steel due to cold rolling has been investigated by observation of the longitudinal plane at chosen sites of a rolled sheet using SEM and SEM-EBSD techniques. Particular attention has been paid to the development of strain distribution in the crystals. The microstructures and the orientation distribution in the longitudinal plane of a sheet rolled to a 60% reduction in thickness were observed, and some grains with preferred orientation such as α-fiber and γ-fiber were selected. In order to examine the local strain distribution of these grains due to cold rolling, high-precision dot markers, 0.3 μm in diameter, were drawn using a focused ion beam. Then, before being subjected to additional rolling, the sheet was fitted into a frame made of the same steel under a plane strain condition. Using the marker method, the local displacement of the grains due to cold rolling has been directly measured.