Effect of vanadium on the microstructure and mechanical properties of 7Mn steel during cold rolling process

Yu Haicun; Lü Wei; Li Ning; Wei Haidong; Wang Xuming; Yu Tao; Ding Wanwu

doi:10.7513/j.issn.1004-7638.2024.05.022

Volume 45 Issue 5

Oct. 2024

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Yu Haicun, Lü Wei, Li Ning, Wei Haidong, Wang Xuming, Yu Tao, Ding Wanwu. Effect of vanadium on the microstructure and mechanical properties of 7Mn steel during cold rolling process[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(5): 167-172. doi: 10.7513/j.issn.1004-7638.2024.05.022

Citation:

Yu Haicun, Lü Wei, Li Ning, Wei Haidong, Wang Xuming, Yu Tao, Ding Wanwu. Effect of vanadium on the microstructure and mechanical properties of 7Mn steel during cold rolling process[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(5): 167-172. doi: 10.7513/j.issn.1004-7638.2024.05.022

Citation:

Yu Haicun, Lü Wei, Li Ning, Wei Haidong, Wang Xuming, Yu Tao, Ding Wanwu. Effect of vanadium on the microstructure and mechanical properties of 7Mn steel during cold rolling process[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(5): 167-172. doi: 10.7513/j.issn.1004-7638.2024.05.022

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Effect of vanadium on the microstructure and mechanical properties of 7Mn steel during cold rolling process

doi: 10.7513/j.issn.1004-7638.2024.05.022

Yu Haicun^{1, 2, 3
,},
Lü Wei^{1, 2},
Li Ning^{1, 2},
Wei Haidong³,
Wang Xuming³,
Yu Tao¹,
Ding Wanwu^{1, 2
,
,}

1.
School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China
2.
Lanzhou University of Technology, State Key Laboratory of Advanced Processing and Reuse of Nonferrous Metals, Lanzhou 730050, Gansu, China
3.
Casting and Forging Branch , Lanzhou Lanshi Group Co., Ltd., Lanzhou 730000, Gansu, China

More Information

Received Date: 2023-10-22
Available Online: 2024-10-30
Publish Date: 2024-10-30

Abstract

Abstract

On the basis of 7Mn medium manganese steel, different contents of V element were added. Through cold rolling and annealing treatment, the influence of 0.1%~0.3% V addition on the microstructure and mechanical properties of the steel was preliminarily explored. The experimental results show that when the content of V is 0.3%, the comprehensive mechanical properties of the experimental steel are the best. The yield strength is 993.96 MPa, with the tensile strength 1164.56 MPa, the elongation 37.55%, and the strength and elongation product 43.73 GPa·%. This is because V forms a fine and dispersed second phase in the steel, which improves the comprehensive mechanical properties of the experimental steel under the combined effects of fine grain strengthening, second phase strengthening and TRIP effect.
- medium manganese steel,
- V microalloying,
- TRIP effect,
- mechanical properties

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References(14)

References

[1]	He B B, Huang X M. Simultaneous increase of both strength and ductility of medium Mn transformation-induced plasticity steel by vanadium alloying[J]. Metallurgical and Materials Transactions A, 2018,49A(5):1433-1438.
[2]	Lee, Sangwon, Cooman D, et al. Effect of the intercritical annealing temperature on the mechanical properties of 10 Pct Mn multi-phase steel[J]. Metallurgical and Materials Transactions A, 2014,45A(11):5009-5016.
[3]	Liu L, He B B, Cheng G, et al. Optimum properties of quenching and partitioning steels achieved by balancing fraction and stability of retained austenite[J]. Scripta Materialia, 2018,150:1-6. doi: 10.1016/j.scriptamat.2018.02.035
[4]	Li Z, Ding H, Misra R, et al. Microstructure-mechanical property relationship and austenite stability in medium-Mn TRIP steels: The effect of austenite-reverted transformation and quenching-tempering treatments[J]. Materials Science & Engineering: A, 2017(682): 211-219.
[5]	Jing Songyang, Ding Hua, Liu Mingzhu. Role of Al element in tailoring the austenite mechanical stability and tensile properties of medium Mn steels[J]. Journal of Materials Research and Technology, 2022(20):1414-1427.
[6]	Li Junkui, Zhang Fucheng. A simultaneously improved strength and ductility on medium Mn TRIP steel designed by pre-twinning strategy based on SFE controlling[J]. Materials Letters, 2022(316):132078.
[7]	Lee, Seawoong, Estrin, et al. Constitutive modeling of the mechanical properties of V-added medium manganese TRIP steel[J]. Metallurgical and Materials Transactions, 2013,44(7):3136-3146. doi: 10.1007/s11661-013-1648-4
[8]	Min T P, Sik M J, Chanwon J, et al. Improved strength of a medium-Mn steel by V addition without sacrificing ductility [J]. Materials Science & Engineering A, 2021, 802:140681.
[9]	Ye Lan, Wang Junfeng, Zeng Zhaoli, et al. Realization of selective strengthening of ferrite by Nb/V microalloying in a medium carbon lightweight δ-TRIP steel[J]. Metallurgical and Materials Transactions, 2020,51(5):2460-2468. doi: 10.1007/s11661-020-05676-6
[10]	Yu Haicun, Cai Zhaochen, Fu Guiqin, et al. Effect of V-Ti addition on microstructure evolution and mechanical properties of hot-rolled transformation-induced plasticity steel[J]. Acta Metallurgica Sinica(English Letters), 2019,32(3):352-360. doi: 10.1007/s40195-018-0796-3
[11]	Hu Bin, He Bingbin, Cheng Guanju, et al. Super-high-strength and formable medium Mn steel manufactured by warm rolling process[J]. Acta Materialia, 2019,174:131-141. doi: 10.1016/j.actamat.2019.05.043
[12]	Jha B, Avtar R. Structure-property correlation in low carbon low alloy high strength wire rods/wires containing retained austenite[J]. Transactions of the Indian Institute of Metals, 1996,49(3):133-142.
[13]	Sun B, Fazeli F, Scott C, et al. Microstructural characteristics and tensile behavior of medium manganese steels with different manganese additions[J]. Materials Science & Engineering A, 2018,729:496-507.
[14]	Cai Z H, Ding H, Xue X, et al. Significance of control of austenite stability and three-stage work-hardening behavior of an ultrahigh strength-high ductility combination transformation-induced plasticity steel[J]. Scripta Materialia, 2013,68(11):865-868. doi: 10.1016/j.scriptamat.2013.02.010