Effect of Different Reduction Ratios on the Longitudinal Corrugated Hot Rolling Deformation of 316L/Q370/316L Clad Plate

doi:10.3901/JME.260186

Abstract

Abstract: Stainless steel clad plate has the advantages of high mechanical properties, strong corrosion resistance, and low cost, and are widely used in the fields of bridges, roads, petroleum, and chemical engineering. Compared to traditional flat rolling, the comprehensive mechanical properties of clad plate prepared by longitudinal corrugated hot rolling are superior. However, the reduction ratio significantly affects the performance of stainless steel clad plate, but the influence of different reduction ratios on longitudinal corrugated hot rolling has not been studied. Aiming at this problem, the 316L/Q370/316L clad plate is prepared by longitudinal corrugated rolling process at different reduction ratios, and its mechanical properties are tested. The deformation behavior of the stainless steel clad plate during the longitudinal corrugated hot rolling process is analyzed using a combination of finite element model, microstructure, and mechanical properties. The result shows that the tensile strength of the clad plate increases with the increases in reduction ratio. The tensile strength of the stainless steel clad plate prepared at a 70% reduction ratio is 599 MPa, which is 19.09% higher than that of the clad plate prepared at a 40% reduction ratio (503 MPa). As the reduction ratio increases, the compressive stress increases, and the cross shear zone is enlarged. The temperature at the interface first decreases and then increases. The grains of Q370 are gradually refined, while the grains of 316L are elongated in the transverse direction (TD). The GND density first increases and then decreases. The combined effect of fine-grained strengthening and low GND density results in the excellent mechanical properties of the clad plate with a 70% reduction ratio. The deformation mechanism underlying the longitudinal corrugated hot rolling of stainless steel clad plate is revealed, providing theoretical guidance for process optimization.

Key words: longitudinal corrugated hot rolling, stainless steel clad plate, deformation mechanism, reduction ratio

CLC Number:

TG335

LIU Yanxiao, LIU Yuanming, HU Xilong, LI Kaiye, WANG Tao, HUANG Qingxue. Effect of Different Reduction Ratios on the Longitudinal Corrugated Hot Rolling Deformation of 316L/Q370/316L Clad Plate[J]. Journal of Mechanical Engineering, 2025, 62(6): 197-208.

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URL: http://www.cjmenet.com.cn/EN/10.3901/JME.260186

http://www.cjmenet.com.cn/EN/Y2025/V62/I6/197

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