钢铁材料中带状组织的形成机理及影响因素研究

打开文本图片集

中图分类号：TF04 文章编号：1000-582X（2025）12-012-08

doi：10.11835/j.issn.1000.582X.2025.12.002

Abstract：The formation mechanism and influencing factors of banded structures in steel materials are investigated through homogenization treatment tests and slow coling experiments，combined with optical microscopy and electron probe micro-analyzer.The results indicate that banded structures primarily form within the temperature range of the two-phase region，and their banding characteristics become more pronounced with decreasing cooling temperatures.Homogenization treatment effectively reduces the segregation of Mn elements， thereby inhibiting the formation of banded structures. Specifically，under a slow cooling rate of 0.05∘C/s ，shortterm homogenization treatment （1h）weakens the banding characteristics，while long-term homogenization treatment （≥2h ）completely eliminates the banded structures.However，after slow cooling at a rate of 0.02∘C/s banded structures still appear in samples even after long-term homogenization treatment （⩾2h ）.In conclusion， the combined efects ofcooling rate and homogenization treatment significantly influence theformation of banded structures in steel materials.

Keywords： banded structure; two-phase region; homogenization; elemental segregation; cooling rate

在钢铁材料的加工与性能研究中，带状组织作为一种常见的显微组织形态，引起了广泛关注。（剩余11528字）