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10.3390/ma16093516
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Article

Elimination of Carbides in Carburized Layer of Stainless Steel/Carbon Steel by Horizontal Continuous Liquid–Solid Composite Casting

by
Jihong Sun
1,2,3,
Xuefeng Liu
1,2,3,*,
Yaohua Yang
1,2,3,
Wenjing Wang
1,2,3,
Xin Wang
1,2,3 and
Weiliang Zhang
1,2,3
1
Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China
2
Beijing Laboratory of Metallic Materials and Processing for Modern Transportation, University of Science and Technology Beijing, Beijing 100083, China
3
Key Laboratory for Advanced Materials Processing of Ministry of Education, University of Science and Technology Beijing, Beijing 100083, China
*
Author to whom correspondence should be addressed.
Materials 2023, 16(9), 3516; https://doi.org/10.3390/ma16093516
Submission received: 19 April 2023 / Accepted: 2 May 2023 / Published: 3 May 2023
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Abstract

The carbides in the carburized layer of stainless steel (SS)/carbon steel (CS) clad plates are prone to inducing intergranular cracks and reducing the interfacial bonding strength. In this paper, SS/CS clad plates were fabricated by horizontal continuous liquid–solid composite casting (HCLSCC), and the formation mechanism of the interfacial carbides and their effect on the elimination of carbides in the carburized layer were revealed by numerical simulation and thermodynamic calculations. During the HCLSCC process, the cladding interface encountered re-melting and re-solidification after rapid melting and solidification, resulting in liquid–liquid and solid–solid diffusion at the cladding interface, where the atomic ratio of Cr/C (Cr/C) gradually increased. Therefore, strip M7C3 and M23C6 carbides as well as blocky M23C6 carbides formed at the cladding interface in turn and had a coherent relationship with the matrix. The blocky M23C6 carbides led to an increase of 240% in the interfacial ferrite strength. The formation of interfacial carbides reduced the difference in C activity between the cladding interface and SS, thus preventing the diffusion of C to SS and inhibiting carbide precipitation in the carburized layer of SS, which was beneficial to improving the interfacial bonding strength.
Keywords: stainless steel/carbon steel clad plates; horizontal continuous liquid–solid composite casting; interfacial carbides; diffusion stainless steel/carbon steel clad plates; horizontal continuous liquid–solid composite casting; interfacial carbides; diffusion

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MDPI and ACS Style

Sun, J.; Liu, X.; Yang, Y.; Wang, W.; Wang, X.; Zhang, W. Elimination of Carbides in Carburized Layer of Stainless Steel/Carbon Steel by Horizontal Continuous Liquid–Solid Composite Casting. Materials 2023, 16, 3516. https://doi.org/10.3390/ma16093516

AMA Style

Sun J, Liu X, Yang Y, Wang W, Wang X, Zhang W. Elimination of Carbides in Carburized Layer of Stainless Steel/Carbon Steel by Horizontal Continuous Liquid–Solid Composite Casting. Materials. 2023; 16(9):3516. https://doi.org/10.3390/ma16093516

Chicago/Turabian Style

Sun, Jihong, Xuefeng Liu, Yaohua Yang, Wenjing Wang, Xin Wang, and Weiliang Zhang. 2023. "Elimination of Carbides in Carburized Layer of Stainless Steel/Carbon Steel by Horizontal Continuous Liquid–Solid Composite Casting" Materials 16, no. 9: 3516. https://doi.org/10.3390/ma16093516

APA Style

Sun, J., Liu, X., Yang, Y., Wang, W., Wang, X., & Zhang, W. (2023). Elimination of Carbides in Carburized Layer of Stainless Steel/Carbon Steel by Horizontal Continuous Liquid–Solid Composite Casting. Materials, 16(9), 3516. https://doi.org/10.3390/ma16093516

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