Thermo-mechanical finite element analysis of die-entry temperature and stamping speed in hot stamping of 22MnB5 box-shaped parts
1 Department of Material Science and Engineering, School of Automotive Materials, Hubei University of Automotive Technology, Hubei Shiyan, 442002, China.
2 Hubei Key Laboratory of Energy Storage and Power Battery (Hubei University of Automotive Technology), Hubei Shiyan, 442002, China.
3 Key Laboratory of Automotive Power Train and Electronics (Hubei University of Automotive Technology).
4 Shiyan Key Laboratory of Advanced Light Alloy Materials (Hubei University of Automotive Technology).
5 Department of Software Engineering, School of Information and Artificial Intelligence, Yangzhou University, Jiangsu, Yangzhou, 225009, China.
Research Article
Open Access Research Journal of Engineering and Technology, 2026, 10(01), 047-061.
Article DOI: 10.53022/oarjet.2026.10.1.0022
Publication history:
Received on 03 February 2026; revised on 18 March 2026; accepted on 20 March 2026
Abstract:
Hot stamping is widely used to produce ultra-high-strength automotive components; however, its coupled thermo-mechanical nature makes forming quality highly sensitive to process parameters. This study investigates the hot stamping of a 22MnB5 steel box-shaped part using a thermo-mechanical coupled finite element model in ABAQUS. Temperature-dependent material behavior, friction, and interfacial heat transfer were considered in the simulation. Forming quality was assessed by thinning tendency, strain uniformity, and temperature distribution under die-entry temperatures of 800–950 °C and stamping speeds of 50–200 mm/s. The results indicate that corner and fillet transition regions are the most critical areas for thinning and strain localization, while sequential tool contact causes temperature non-uniformity. A process window is recommended of 850–900 °C and 100–150 mm/s is provided for stable forming of the 22MnB5 part.
Keywords:
Hot stamping; 22MnB5 steel; Finite element simulation; Process window; Thermo-mechanical coupling
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