| I&Q&P工艺对C-Si-Mn-Nb双相钢显微组织和力学性能的影响 |
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| 引用本文： | 吴秋云,潘红波,刘永刚,詹华,崔磊. I&Q&P工艺对C-Si-Mn-Nb双相钢显微组织和力学性能的影响[J]. 金属热处理, 2023, 48(3): 45-50. DOI: 10.13251/j.issn.0254-6051.2023.03.008 |
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| 作者姓名： | 吴秋云 潘红波 刘永刚 詹华 崔磊 |
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| 作者单位： | 1.安徽工业大学 冶金减排与资源综合利用教育部重点实验室, 安徽 马鞍山 243002; 2.安徽工业大学 冶金工程与资源综合利用安徽省重点实验室, 安徽 马鞍山 243002; 3.马鞍山钢铁股份有限公司 技术中心, 安徽 马鞍山 243003 |
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| 基金项目： | 国家自然科学基金(U1860105,51774006);安徽省重大专项(18030901085) |
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| 摘 要： | 在CCT-AY-II连退模拟机上对在传统C-Si-Mn双相钢基础上添加了0.05%Nb的试验钢进行I&Q&P退火试验,研究了Nb元素及I&Q&P工艺对双相钢组织演变及力学性能的影响。通过金相显微镜、扫描电镜和X射线衍射等表征研究了350、450℃配分不同时间下(300、450、600 s)试验钢的显微组织和力学性能。结果表明,随着配分温度与配分时间的增加,组织中板条马氏体含量减少,铁素体增多;试验钢的抗拉强度呈现减小趋势,伸长率则相反。在450℃配分450 s时试验钢的强塑积最大,达20.48 GPa·%。
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| 关 键 词： | 双相钢 配分工艺 显微组织 力学性能 加工硬化 |
| 收稿时间： | 2022-10-30 |
Effect of I&Q&P process on microstructure and mechanical properties of C-Si-Mn-Nb dual-phase steel |
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| Wu Qiuyun,Pan Hongbo,Liu Yonggang,Zhan Hua,Cui Lei. Effect of I&Q&P process on microstructure and mechanical properties of C-Si-Mn-Nb dual-phase steel[J]. Heat Treatment of Metals, 2023, 48(3): 45-50. DOI: 10.13251/j.issn.0254-6051.2023.03.008 |
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| Authors: | Wu Qiuyun Pan Hongbo Liu Yonggang Zhan Hua Cui Lei |
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| Affiliation: | 1. Key Laboratory of Metallurgical Emission Reduction and Resources Recycling of Ministry of Education, Anhui University of Technology, Ma'anshan Anhui 243002, China; 2. Anhui Province Key Laboratory of Metallurgical Engineering and Resources Recycling, Anhui University of Technology, Ma'anshan Anhui 243002, China; 3. Technology Center, Ma'anshan Iron and Steel Company Ltd., Ma'anshan Anhui 243003, China |
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| Abstract: | I&Q&P annealing experiments were carried out on the traditional C-Si-Mn dual-phase steel adding 0.05%Nb by means of CCT-AY-II continuous annealing simulator. The effects of Nb element and I&Q&P process on microstructure evolution and mechanical properties of the tested steel were studied. The microstructure and mechanical properties of the tested steel at partitioning temperature of 350 ℃ and 450 ℃ for different partitioning times (300, 450 and 600 s) were investigated by means of metallographic microscope, scanning electron microscope and X-ray diffraction. The results show that the content of lath martensite decreases and the ferrite increases with the increase of partitioning temperature and partitioning time. The tensile strength of the tested steel shows a decreasing trend, while the elongation shows an increasing trend. The product of strength and plasticity of the steel is optimum when partitioning at 450 ℃ for 450 s, which is 20.48 GPa·%. |
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| Keywords: | dual-phase steel partitioning process microstructure mechanical properties work hardening |
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