冷轧压下率对IF钢退火热处理织构及成形性的影响

doi:10.13251/j.issn.0254-6051.2024.10.021

金属热处理 ›› 2024, Vol. 49 ›› Issue (10): 121-125.DOI: 10.13251/j.issn.0254-6051.2024.10.021

冷轧压下率对IF钢退火热处理织构及成形性的影响

马毅¹, 张立文¹, 宋康杰¹, 罗亚龙¹, 苗露阳¹, 张驰¹, 吴鑫², 王印周²

1.大连理工大学材料科学与工程学院, 辽宁大连 116024;
2.河钢集团邯钢公司, 河北邯郸 056015

收稿日期:2024-05-07 修回日期:2024-08-15 出版日期:2024-11-28 发布日期:2024-11-28
通讯作者: 张立文,教授,博士,E-mail: commat@mail.dlut.edu.cn
作者简介:马毅(1998—),男,硕士研究生,主要研究方向为金属材料组织与织构,E-mail: 18635255543@mail.dlut.edu.cn。
基金资助:
国家自然科学基金(52274375)

Effect of cold rolling reduction rate on texture and formability of IF steel after annealing treatment

Ma Yi¹, Zhang Liwen¹, Song Kangjie¹, Luo Yalong¹, Miao Luyang¹, Zhang Chi¹, Wu Xin², Wang Yinzhou²

1. School of Materials Science and Engineering, Dalian University of Technology, Dalian Liaoning 116024, China;
2. Hansteel Company, HBIS Group, Handan Hebei 056015, China

Received:2024-05-07 Revised:2024-08-15 Online:2024-11-28 Published:2024-11-28

摘要/Abstract

摘要： 通过试验研究了不同冷轧压下率的IF钢在800 ℃保温300 s条件下退火热处理后的织构及成形性能。利用金相显微镜与电子背散射衍射技术(EBSD)测量了不同冷轧压下率下退火样品的微观组织及织构。使用万能拉伸试验机对不同IF钢样品进行了拉伸试验。试验结果表明,随着冷轧压下率的增大,再结晶晶粒尺寸呈现出逐渐减小的趋势。沿γ-取向线的织构均匀性随着冷轧压下率的增大先增加后减小。在75%冷轧压下率时,织构的均匀性最好。通过对比不同IF钢试样的塑性应变比(r值)及各向异性Δr可知,冷轧压下率为75%时IF钢具有最大的r值及最小的各向异性Δr,因此具有优异的成形性能。

关键词: IF钢, 冷轧, 织构, EBSD

Abstract: The texture and formability of IF steel with different cold rolling reduction rates after annealing at 800 ℃ for 300 s were studied. The microstructure and texture of annealed specimens at different cold rolling reduction rates were measured by metallographic microscopy and electron backscatter diffraction (EBSD). The tensile tests of the IF steel specimens were carried out by means of universal tensile testing machine. The experimental results show that the recrystallization grain size decreases gradually with the increase of cold rolling reduction rate. The texture uniformity along the gamma-orientation line increases first and then decreases with the increase of cold rolling reduction rate. When the reduction rate is 75%, the uniform shape of the texture is optimal. By comparing the plastic strain ratio (r value) and anisotropy Δr of the different IF steel specimens, it can be seen that IF steel has the largest r value and the smallest anisotropy Δr when the cold rolling reduction rate is 75%. Therefore, it has excellent formability.

Key words: interstitial free steel, cold-rolled, texture, EBSD

中图分类号:

TG161

马毅, 张立文, 宋康杰, 罗亚龙, 苗露阳, 张驰, 吴鑫, 王印周. 冷轧压下率对IF钢退火热处理织构及成形性的影响[J]. 金属热处理, 2024, 49(10): 121-125.

Ma Yi, Zhang Liwen, Song Kangjie, Luo Yalong, Miao Luyang, Zhang Chi, Wu Xin, Wang Yinzhou. Effect of cold rolling reduction rate on texture and formability of IF steel after annealing treatment[J]. Heat Treatment of Metals, 2024, 49(10): 121-125.

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冷轧压下率对IF钢退火热处理织构及成形性的影响

Effect of cold rolling reduction rate on texture and formability of IF steel after annealing treatment

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