过时效温度对深冲双相钢组织、织构与性能的影响

doi:10.13251/j.issn.0254-6051.2025.08.019

金属热处理 ›› 2025, Vol. 50 ›› Issue (8): 110-117.DOI: 10.13251/j.issn.0254-6051.2025.08.019

过时效温度对深冲双相钢组织、织构与性能的影响

韩冰¹, 刘国龙², 李建英¹, 马晓杰², 刘帅², 冯运莉²

1.唐山钢铁集团有限责任公司, 河北唐山 063000;
2.华北理工大学冶金与能源学院, 河北唐山 063210

收稿日期:2025-03-11 修回日期:2025-06-30 出版日期:2025-08-25 发布日期:2025-09-10
作者简介:韩冰(1984—),男,研究员,硕士,主要研究方向为冷轧产品开发,E-mail:rainman_118@163.com
基金资助:
河钢集团重点项目(HG2024121);河北省创新能力提升计划(24461002D);河北省属高校科研业务费(JJC2024013)

Effect of over-aging temperature on microstructure, texture and properties of deep drawing dual-phase steel

Han Bing¹, Liu Guolong², Li Jianying¹, Ma Xiaojie², Liu Shuai², Feng Yunli²

1. Tangshan Iron and Steel Group Co., Ltd., Tangshan Hebei 063000, China;
2. College of Metallurgy and Energy, North China University of Science and Technology, Tangshan Hebei 063210, China

Received:2025-03-11 Revised:2025-06-30 Online:2025-08-25 Published:2025-09-10

摘要/Abstract

摘要： 双相钢具有良好的抵抗局部变形能力,故在室温下的成形性有限。为提高双相钢深冲性能,通过冷轧-退火-过时效工艺,结合微观组织、织构的演变特点,分析了过时效温度对双相钢的力学性能及深冲性能的影响。结果表明,过时效处理后的双相钢组织均由铁素体、马氏体和碳化物组成,且马氏体的体积分数随过时效温度的升高而降低。在240 ℃和270 ℃过时效处理的试样具有较强的γ织构。随过时效温度升高,对深冲性能有利的{111}<112>织构密度逐渐降低。在过时效温度为240 ℃时,试验钢得到最优的综合力学性能和成形性能,屈服强度为336.7 MPa,抗拉强度为505.4 MPa,伸长率为36.7%,r值为1.4,n值为0.193。

关键词: 深冲双相钢, 时效温度, 组织, 织构, 性能

Abstract: Dual-phase steel exhibits good resistance to localized deformation, the formability at room temperature is limited. To improve the deep drawing properties of dual-phase steel, the effect of aging temperature on the mechanical and deep drawing properties of the steel was analyzed through a cold rolling-annealing-over-aging process, considering the microstructure and texture evolution. The results show that the microstructure of the over-aged dual-phase steel consists of ferrite, martensite and carbides, the volume fraction of martensite decreases with increase of over-aging temperature. The specimens over-aged at 240 ℃ and 270 ℃ exhibit strong γ-texture. With the increase of over-aging temperature, the density of {111}<112> texture which is beneficial to deep drawing properties decreases gradually. After over-aging at 240 ℃, the steel achieves the optimal combination of mechanical and formability properties, with yield strength of 336.7 MPa, tensile strength of 505.4 MPa, elongation of 36.7%, r-value of 1.4 and n-value of 0.193.

Key words: deep drawing dual-phase steel, aging temperature, microstructure, texture, properties

中图分类号:

TG335.12

韩冰, 刘国龙, 李建英, 马晓杰, 刘帅, 冯运莉. 过时效温度对深冲双相钢组织、织构与性能的影响[J]. 金属热处理, 2025, 50(8): 110-117.

Han Bing, Liu Guolong, Li Jianying, Ma Xiaojie, Liu Shuai, Feng Yunli. Effect of over-aging temperature on microstructure, texture and properties of deep drawing dual-phase steel[J]. Heat Treatment of Metals, 2025, 50(8): 110-117.

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过时效温度对深冲双相钢组织、织构与性能的影响

Effect of over-aging temperature on microstructure, texture and properties of deep drawing dual-phase steel

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