Microstructure Characterization and Mechanical Properties of Stainless Steel Clad Plate.

Hao Li,Boyang Zhang,Liyuan Zhang,Qingdong Zhang

doi:10.3390/ma12030509

Abstract

In this study the microstructure and mechanical properties of stainless steel clad plate are researched. Due to element diffusion (Fe, Cr, Ni, Mn), a 20 μm thick diffusion layer is formed between stainless steel and carbon steel clad plate. The diffusion layer has a stable mechanical performance without obvious grain microstructure, and its internal mechanical properties show a graded change in the thickness direction. This is beneficial to a strong bond between stainless steel and carbon steel and the stable transition of mechanical performance in the thickness direction, as well as further carbon diffusion changes in the microstructure and mechanical properties near the diffusion layer of clad plate. Carburization stainless steel with a thickness of 150 μm is formed in the stainless steel side and decarburization carbon steel with a thickness of 80 μm is formed in the carbon steel side.

Highlights

Metal clad plates with good properties and various functions have developed in many industries [1,2,3]
Further studies show that carbon diffusion occurs between carbon steel and stainless steel clad plate, which results in the formation of a decarburization layer in the carbon steel side, and a carburization layer in the stainless steel side, respectively [14,15,16]
Based on microstructure and element distribution, stainless steel clad plate in the thickness direction can be divided into five parts which are stainless steel, carburization stainless steel, diffusion layer, decarburization carbon steel and carbon steel

Summary

Introduction

Metal clad plates with good properties and various functions have developed in many industries [1,2,3]. Further studies show that carbon diffusion occurs between carbon steel and stainless steel clad plate, which results in the formation of a decarburization layer in the carbon steel side, and a carburization layer in the stainless steel side, respectively [14,15,16]. Compared to carbon steel and stainless steel, the decarburization layer and carburization layer have different microstructures and mechanical properties which could affect the mechanical performance of clad plate. The studies on the diffusion layer, decarburization layer and carburization layer in stainless steel clad plate have become increasingly active, but most studies remain in the observation stage [17,18], and only a few studies conducted some simple mechanical tests on them [19,20]. Investigating the microstructure and mechanical properties of clad plate can be a guide to deformation behavior research and finite element modeling of stainless steel clad plate

Materials and Methods

Results and Conclusions

Conclusions