钒对汽车高强钢组织和性能的影响

杨亚琴; 孙宪超

doi:10.7513/j.issn.1004-7638.2021.05.013

钒对汽车高强钢组织和性能的影响

doi: 10.7513/j.issn.1004-7638.2021.05.013

杨亚琴^1,,
孙宪超²

1.
苏州工业职业技术学院，江苏苏州 215104
2.
重庆大学材料科学与工程学院，重庆 400045

基金项目: 苏州科技局苏州市重点实验室资助项目（SZS201815）；苏州工业职业技术学院优秀科技创新团队（2020kytd01）项目支持；苏州工业职业技术学院服务企业技术技能平台（2020kypt01）项目支持

详细信息

作者简介:
杨亚琴（1974—），女，江苏苏州人，硕士，副教授，主要从事机械工程相关的研究，E-mail：yangyq@siit.edu.cn。

中图分类号: TF841.3，TG142.1
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- 文章访问数: 369
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- 被引次数: 0
出版历程
- 收稿日期: 2020-11-24
- 刊出日期: 2021-10-30

Effects of vanadium on microstructure and properties of high strength automobile steel

Yang Yaqin^1
,,
Sun Xianchao²

1.
Suzhou Institute of Industrial Technology, Suzhou 215104, Jiangsu,China
2.
School of Materials and Engineering, Chongqing University, Chongqing 400045, China

摘要

摘要: 在汽车用高强钢中添加不同含量的合金元素钒，并进行了高强钢显微组织、耐磨损性能和拉伸性能的测试与分析。结果表明，合金元素钒的添加有利于细化钢的内部组织，提高高强钢的耐磨损性能和拉伸性能。随钒含量从0增至0.24%，高强钢的磨损体积先减小后增大,抗拉强度和屈服强度逐步增大,断后伸长率先增大后减小，高强钢的耐磨损性能和拉伸性能先提高后下降。与不添加钒相比，添加0.16%钒时高强钢的磨损体积减小29.6%，抗拉强度、屈服强度和断后伸长率分别增大14.4%、20.9%、12.8%。
- 高强钢 /
- 钒 /
- 微合金化 /
- 耐磨损性能 /
- 拉伸性能
Abstract: The microstructure, wear resistance and tensile properties of high-strength steel were tested and analyzed by adding different content of vanadium in high-strength automobile steel. The results show that the addition of vanadium is beneficial to refine the internal structure of the steel and improve the wear resistance and tensile properties of the high-trength steel. With the increase of vanadium content from 0 to 0.24%, the wear volume of the high-strength steel first decreases and then increases, the tensile strength and yield strength increase gradually, the elongation after fracture increases first and then decreases, and the wear resistance and tensile property of the high-strength steel first increase and then decrease. Compared with that without vanadium, the wear volume of the high-strength steel with 0.16% vanadium decreases by 29.6%, while the tensile strength, yield strength and elongation after fracture increase by 14.4%, 20.9% and 12.8% respectively.
- high-strength steel /
- vanadium /
- microaloying /
- wear resistance /
- tensile property

HTML全文

图 1 试样显微组织照片

Figure 1. Microstructures of the specimens

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图 2 试样碳化物金相照片

Figure 2. Metallographic photographs of the carbides of specimens

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图 3 试样耐磨损性能测试结果

Figure 3. The wear corrosion results of specimens

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图 4 试样力学性能测试结果

Figure 4. The mechanical properties of specimens

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图 5 试样拉伸断口SEM照片

Figure 5. SEM images of the tensile fracture of specimens

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表 1 试样化学成分

Table 1. Chemical composition of the samples %

编号	C	Si	Mn	P	S	Ti	Nb	V	Fe
1^#试样	0.082	0.523	1.052	0.025	0.013	0.005	0.005	0	Bal.
2^#试样	0.081	0.521	1.051	0.024	0.012	0.005	0.005	0.08	Bal.
3^#试样	0.083	0.522	1.052	0.026	0.01	0.005	0.005	0.16	Bal.
4^#试样	0.081	0.524	1.053	0.025	0.01	0.005	0.005	0.24	Bal.

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