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| Research progress and prospect of ultra-high strength hot-formed steel |
| WANG Pengcheng1, ZHAO Yan1, LU Hongzhou2, HOU Jianlong3, ZHAO Zhengzhi1 |
1. Collaborative Innovation Center of Steel Generic Technology, University of Science and Technology Beijing, Beijing 100083, China;
2. CITIC Metal Co., Ltd., Beijing 100004, China;
3. Anyang Iron and Steel Group Co., Ltd., Anyang 455004, Henan, China |
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Abstract Under the background of the "double carbon" strategy, environmental protection, energy saving, and other issues have been valued, which put forward higher light weight requirements for automotive steel. As an essential part of automotive steel, ultra-high strength hot-formed steel has broad research prospects. The research status of hot-formed steel at home and abroad is summarized, and the influence of microalloying and residual austenitic structure control on the robust plasticizing mechanism of ultra-high strength hot-formed steel is also summarized from composition design, microstructure characteristics and process control. The research progress of aluminum-silicon coated and zinc-based coated hot-formed steels and new non-coated hot-formed steels with high oxidation resistance is described. The interaction between microstructure and hydrogen-induced delayed cracking behavior of ultra-high strength hot-formed steel is discussed. At the same time, suggestions for further optimization control of ultra-high strength hot-formed steel are put forward, providing a reference for developing and industrial application of ultra-high strength hot-formed steel with high strength plasticity and excellent service performance.
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Received: 14 June 2023
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2023, Vol. 33 
