Effect of the rolling speed on the flow field and solidification welding line of the roll casting for AZ31 magnesium alloy

Huang, Zhi-Quan; Zhao, Z. J.; Gao, Xiangyu; Zhang, Tao

doi:10.1007/s00170-023-11604-w

Cited by 2 publications

(1 citation statement)

References 26 publications

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“…Jain, Vipul [20] investigated the role of microstructure, crystallographic texture, and analytical stress state on the formation of alligator crack and edge crack during cold rolling of Fe-3.78 wt.% Si electrical steel. Huang, Zhiquan [21] analyzed the influence of the rolling speed on the flow field and solidification welding line of AZ31 magnesium alloy in the roll casting area by finite element simulation. Xu, Wei [22] studied the effect of Al-Si coating on the weld bead formation, aluminum (Al) element distribution, the microstructure and mechanical properties of laser welded 22 MnB5 steel joint under various welding speed.…”

Section: Introductionmentioning

confidence: 99%

Application of Extended Finite Element Method for Studying Crack Propagation of Welded Strip Steel in the Cold Rolling Process

Chen,

Wu,

Ying

2023

Materials

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In the cold rolling process, edge cracks, particularly those near the welded zone, can inadvertently lead to strip rupture. This study employed the extended finite element method (XFEM) to analyze the crack propagation behavior in welded strip steel during cold rolling. Various tests such as the tensile test, essential work of fracture (EWF) test, spherical indentation method, and elastoplastic finite element simulations were conducted to determine the maximum principal stress and fracture energy utilized in XFEM for the base metal and weld metal, respectively. A continuous cold rolling model was established to investigate the crack propagation behaviors in the base metal, weld metal, and the interface between the base and weld metal. In the continuous rolling process, the crack propagation and expansion speed in the base metal are much larger than that of the weld zone. In addition, the base metal at the back end of the rolled piece is more prone to fracture than the base metal at the front end.

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Section: Introductionmentioning

confidence: 99%

Application of Extended Finite Element Method for Studying Crack Propagation of Welded Strip Steel in the Cold Rolling Process

Chen,

Wu,

Ying

2023

Materials

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Correlation of digital twin and roll surface sensor results for AZ31 alloy TRC process

Kwiecień,

Weiner,

Lypchanskyi

et al. 2024

J Mater Sci

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Due to the growing interest in lightweight constructions, the continuous casting of nonferrous metals is continuously developing as a result of the cost-effectiveness of this process, which combines several stages of sheet production. Unfortunately, because of the characteristics of the process, the parameters in the roll gap, such as, for example, pressure and temperature, are unknown, significantly affects the understanding of the phenomena occurring in the material during rolling. Therefore, at IMF Freiberg, a sensor consisting of a piezo sensor and two thermocouples measuring the temperature at two different heights was mounted on the surface of the roll, making it possible to control the process parameters live during the TRC trial. The measurements were further supported by a digital twin in the form of a layer model, combining a viscous and solid region for each layer in a single tool. The computations in this tool are performed offline and the computation time is in the order of seconds, thus much less than that of the finite element method. Because the layer model measures the temperature of the magnesium strip, FEM simulations were used to validate measurements from thermocouples. Experimental results have been obtained that allow for a direct correlation between the development of the pressure and temperature and the length of the fully solidified LD part in the roll gap zone, which correlates directly with the effective total equivalent strain. Using the sensor and layer model, it is possible to train a digital twin that can be used for online estimation of the final strip properties obtained in the TRC process. Graphical abstract

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Effect of the rolling speed on the flow field and solidification welding line of the roll casting for AZ31 magnesium alloy

Cited by 2 publications

References 26 publications

Application of Extended Finite Element Method for Studying Crack Propagation of Welded Strip Steel in the Cold Rolling Process

Application of Extended Finite Element Method for Studying Crack Propagation of Welded Strip Steel in the Cold Rolling Process

Correlation of digital twin and roll surface sensor results for AZ31 alloy TRC process

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