| 退火温度对冷轧DP980钢力学性能的影响 |
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| 引用本文： | 康涛,郭杰,周伟,陈俊,邝春福,赵征志.退火温度对冷轧DP980钢力学性能的影响[J].金属热处理,2020,45(1):6-10. |
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| 作者姓名： | 康涛 郭杰 周伟 陈俊 邝春福 赵征志 |
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| 作者单位： | 1. 北京科技大学 钢铁共性技术协同创新中心, 北京 100083;2. 北京科技大学 现代交通金属材料与加工技术北京实验室, 北京 100083;3. 攀钢集团西昌钢钒有限公司, 四川 西昌 615000;4. 攀钢集团研究院有限公司, 四川 攀枝花 617000 |
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| 摘 要： | 利用连续退火模拟机对DP980试验钢进行了连续退火试验,并通过扫描电镜、电子背散射衍射、透射电镜等研究了不同退火温度下(775、800、825和850 ℃),试验钢显微组织的演变规律和力学性能的变化趋势。结果表明:试验钢的屈服强度随着退火温度的升高而不断增大(从705 MPa增大到850 MPa),抗拉强度和断后伸长率则随着退火温度的升高而不断减小(抗拉强度从1150 MPa减小到1030 MPa;伸长率从8.9%减小到5.3%),这与试验钢的显微组织构成和形态分布密切相关。此外,不同退火温度下,试验钢的加工硬化率曲线均呈现单调下降的趋势。
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| 关 键 词： | 退火温度 DP980钢 微观组织 力学性能 加工硬化 |
| 收稿时间： | 2019-06-12 |
Effect of annealing temperature on mechanical properties of cold-rolled DP980 steel |
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| Kang Tao,Guo Jie,Zhou Wei,Chen Jun,Kuang Chunfu,Zhao Zhengzhi.Effect of annealing temperature on mechanical properties of cold-rolled DP980 steel[J].Heat Treatment of Metals,2020,45(1):6-10. |
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| Authors: | Kang Tao Guo Jie Zhou Wei Chen Jun Kuang Chunfu Zhao Zhengzhi |
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| Affiliation: | 1. Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, China;2. Modern Transportation Metal Materials and Processing Technology Beijing Laboratory Technology, University of Science and Technology Beijing, Beijing 100083, China;3. Pangang Group Xichang Steel Vanadium Co., Ltd., Xichang Sichuan 615000, China;4. Pangang Group Research Institute Co., Ltd., Panzhihua Sichuan 617000, China |
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| Abstract: | Continuous annealing experiments were carried out on the DP980 tested steel by means of continuous annealing simulator. The evolution of microstructure and the change of mechanical properties of experimental steel under different annealing temperatures( 775,800,825,850 ℃) were studied by means of SEM,EBSD and TEM. The results show that with the annealing temperature increasing,the yield strength of the steel increases gradually from 705 MPa to 850 MPa,the tensile strength and the elongation after fracture decrease gradually( tensile strength reduced from 1150 MPa to 1030 MPa;elongation reduced from 8. 9% to 5. 3%),which are closely related to the structure and morphology of the sample. In addition,the hardening rate curves of the experimental steels show a monotonous decline at different annealing temperatures. |
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| Keywords: | annealing temperature DP980 steel microstructure mechanical properties work hardening |
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