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http://dx.doi.org/10.12656/jksht.2021.34.4.171

Comparative Study on Microstructures of Hot-rolled STS 304L/A516-70N and STS 316L/A516-70N Clad Plates  

Jin, Ju-Chan (Department of Materials Science and Engineering, Yonsei University)
Cho, Soochul (Special Steel Business Team, Dongkuk Steel)
Sim, Hoseop (Special Steel Business Team, Dongkuk Steel)
Lee, Young-Kook (Department of Materials Science and Engineering, Yonsei University)
Publication Information
Journal of the Korean Society for Heat Treatment / v.34, no.4, 2021 , pp. 171-178 More about this Journal
Abstract
In the present study, we comparatively investigated the microstructures of two hot-rolled stainless steel clad plates; STS 304L - low carbon steel A516-70N and STS 316L - A516-70N. The STS 304L/A516-70N clad plate (Clad_304L_Ni) had a Ni-interlayer between stainless steel and carbon steel and a 90 ㎛ thick deformation band of unrecrystallized austenite grains on the stainless steel. The STS 316L/A516-70N clad plate (Clad_316L) had no interlayer and almost fully recrystallized austenite grains. Clad_304L_Ni exhibited the thinner a decarburized layer in carbon steel and a total carburized layer in stainless steel than Clad_316L. However, a severely carburized layer in stainless steel was thicker for Clad_304L_Ni than Clad_316L. Hardness profiles near the interface of clad plates matched well with microstructures at locations where the hardness values were measured.
Keywords
Stainless steel clad plate; Hot rolling; Microstructure; Diffusion; Precipitation;
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