Effect of deformation temperature and cooling rate on microstructure and properties of microalloyed 82B wire rod

Li Zhengjie; Li Zhipan

doi:10.7513/j.issn.1004-7638.2021.01.028

Volume 42 Issue 1

Feb. 2021

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Li Zhengjie, Li Zhipan. Effect of deformation temperature and cooling rate on microstructure and properties of microalloyed 82B wire rod[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(1): 170-175. doi: 10.7513/j.issn.1004-7638.2021.01.028

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Li Zhengjie, Li Zhipan. Effect of deformation temperature and cooling rate on microstructure and properties of microalloyed 82B wire rod[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(1): 170-175. doi: 10.7513/j.issn.1004-7638.2021.01.028

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Effect of deformation temperature and cooling rate on microstructure and properties of microalloyed 82B wire rod

doi: 10.7513/j.issn.1004-7638.2021.01.028

Hebi Engineering Technical College, Henan Polytechnic University, Hebi 458030, Henan, China

Received Date: 2020-06-09
Publish Date: 2021-02-10

Abstract

Abstract

The deformation temperature and cooling rate of microalloyed 82B wire rod were studied by means of thermal simulator, metallographic microscope and universal testing machine in this paper. Experiment results show that the rapid cooling rate can promote the precipitation of the second phase containing vanadium in the vanadium alloyed sample, improving the strength of the material and reducing its plasticity, thus the vanadium should be well controlled for this alloying design. V-N alloying was suitable for 82B wire rod, but the ratio of V to N and the interaction with cooling rate could significantly affect the strength and toughness of the material, so it was necessary to control the ratio of V to N in the steel. Cr-V composite microalloying could significantly improve the strength and toughness of 82B wire rod, whichwas not strongly affected by the cooling rate, so it was an ideal microalloying method. The microstructure of 82B wire rod was uniform without element center segregation, and the suitable finishing temperature range was 900 ~ 940 ℃ for experimental steels.
- 82B wire rod,
- deformation temperature,
- cooling rate,
- microalloying,
- mechanical properties

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References(11)

References

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