Effect of titanium on microstructure and properties of steel 22MnB5 for automobile

Wang Gong; Ji Guoshun

doi:10.7513/j.issn.1004-7638.2021.01.025

Volume 42 Issue 1

Feb. 2021

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Wang Gong, Ji Guoshun. Effect of titanium on microstructure and properties of steel 22MnB5 for automobile[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(1): 155-159. doi: 10.7513/j.issn.1004-7638.2021.01.025

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Wang Gong, Ji Guoshun. Effect of titanium on microstructure and properties of steel 22MnB5 for automobile[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(1): 155-159. doi: 10.7513/j.issn.1004-7638.2021.01.025

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Effect of titanium on microstructure and properties of steel 22MnB5 for automobile

doi: 10.7513/j.issn.1004-7638.2021.01.025

Wang Gong^1
,,
Ji Guoshun²

1.
School of Electromechanical and Automobile, Jianghai Polytechnic College, Yangzhou 225101, Jiangshu, China
2.
School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou 310018, Zhejiang, China

Received Date: 2020-01-16
Publish Date: 2021-02-10

Abstract

Abstract

The titanium microalloyed automobile steel samples were prepared by adding different content of titanium into 22MnB5 steel, and then the microstructure, mechanical properties and corrosion resistance of the samples were tested and analyzed. The results show that the addition of titanium is beneficial to refine the internal grain of the samples and improve the mechanical properties and corrosion resistance of the samples. With the increase of titanium content from 0 to 0.08%, the tensile strength and yield strength of the samples firstly increase and then decrease, the elongation after fracture firstly increases and then decreases and increases again. The corrosion potential firstly shifts forward and then negatively, and the mechanical properties and corrosion resistance of the automobile steel firstly increase and then decrease. The titanium content of the sample is preferably at 0.06%. When 0.06%Ti is added, the tensile strength of resulted steel increases by 24 MPa, the yield strength increases by 27 MPa, and the corrosion potential shifts positively by 95 mV.
- automobile steel,
- 22MnB5,
- microalloying,
- titanium content,
- mechanical property,
- corrosion resistance

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References(8)

References

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