Titanium microalloying of steel: A review of its effects on processing, microstructure and mechanical properties

Shuize Wang; Zhijun Gao; Guilin Wu; Xinping Mao

doi:10.1007/s12613-021-2399-7

Volume 29 Issue 4

Apr. 2022

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2022 > 29(4): 645-661

Shuize Wang, Zhijun Gao, Guilin Wu, and Xinping Mao, Titanium microalloying of steel: A review of its effects on processing, microstructure and mechanical properties, Int. J. Miner. Metall. Mater., 29(2022), No. 4, pp. 645-661. https://doi.org/10.1007/s12613-021-2399-7

Cite this article as:

Shuize Wang, Zhijun Gao, Guilin Wu, and Xinping Mao, Titanium microalloying of steel: A review of its effects on processing, microstructure and mechanical properties, Int. J. Miner. Metall. Mater., 29(2022), No. 4, pp. 645-661. https://doi.org/10.1007/s12613-021-2399-7

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Invited Review

Titanium microalloying of steel: A review of its effects on processing, microstructure and mechanical properties

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Corresponding author:
Xinping Mao E-mail: xinpingmao@ustb.edu.cn
Received: 12 October 2021; Revised: 16 December 2021; Accepted: 20 December 2021; Available online: 25 December 2021

Abstract

Abstract

Carbon neutrality of the steel industry requires the development of high-strength steel. The mechanical properties of low-alloy steel can be considerably improved at a low cost by adding a small amount of titanium (Ti) element, namely Ti microalloying, whose performance is related to Ti-contained second phase particles including inclusions and precipitates. By proper controlling the precipitation behaviors of these particles during different stages of steel manufacture, fine-grained microstructure and strong precipitation strengthening effects can be obtained in low-alloy steel. Thus, Ti microalloying can be widely applied to produce high strength steel, which can replace low strength steels heavily used in various areas currently. This article reviews the characteristics of the chemical and physical metallurgies of Ti microalloying and the effects of Ti microalloying on the phase formation, microstructural evolution, precipitation behavior of low-carbon steel during the steel making process, especially the thin slab casting and continuous rolling process and the mechanical properties of final steel products. Future development of Ti microalloying is also proposed to further promote the application of Ti microalloying technology in steel to meet the requirement of low-carbon economy.
- titanium microalloying;
- precipitation;
- grain refinement;
- phase transformation;
- high-strength steel

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