Abstract The plastic flow behavior of tensile specimens of ultrafine-grained 08G2B steel prone to strain aging was studied using digital image correlation, electron backscatter diffraction, and microindentation. Standard flat tensile specimens were tested with a constant strain rate in the initial state (after controlled rolling) and after controlled rolling + heating to 680°C for 30 min followed by air cooling. The specimen strained to δ ≈ 3% was observed to have Chernov–Luders bands. Texture analysis and microindentation were carried out in different regions outside, at the front, and within the Chernov–Luders band. It was shown that plastic flow in the Chernov–Luders band leads to an increase in microhardness and the appearance of new {112}〈111〉 and {001}〈110〉 texture components.

中文翻译：

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超细晶粒 08G2B 钢中切尔诺夫-卢德斯带中的塑性流动

摘要 采用数字图像相关、电子背散射衍射和显微压痕法研究了易发生应变时效的超细晶08G2B钢拉伸试样的塑性流动行为。在初始状态（受控轧制后）和受控轧制 + 加热至 680°C 30 分钟，然后空冷后，以恒定应变速率测试标准扁平拉伸试样。观察到应变至 δ ≈ 3% 的试样具有切尔诺夫-卢德斯带。质地分析和显微压痕在切尔诺夫-卢德斯带外、前部和内的不同区域进行。结果表明，切尔诺夫-卢德斯带中的塑性流动导致显微硬度的增加和新的 {112}<111> 和 {001}<110> 纹理成分的出现。