When stainless steel and carbon steel are placed together, carburization corrosion occurs. Is this a problem for stainless steel clad plates as well?

Since the joint area is not in contact with corrosive media, it is considered that there is little relevance

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Focusing on the original poster’s question: does the blast plate have any measures to prevent carburization?

Is it asking whether the explosive bonding process of explosive bonded plates can cause carburization in stainless steel?

It’s not the blasting process itself, but rather after blasting, when carbon steel and stainless steel come into contact with each other, that could lead to carburization, right? I really hadn’t thought about this before.

I really hadn’t thought about this issue before; I’ll pay attention to it now. Could someone with more experience give me some advice?

The clad plates form a metallurgical bond through explosive cladding. The situation in the combined zone is complex, involving both carbon migration and dilution of alloying elements. For the bonding zones, what matters to us is their bonding strength, and the degree of bonding can be assessed using shear strength and ultrasonic testing. Changes in the composition at the interface do not affect the corrosion resistance of the stainless steel surface. :lol

I think that after carburizing, chromium carbide is formed, which results in chromium-deficient areas. The formation of chromium carbide requires a certain temperature, and whether carburizing corrosion will occur depends on that temperature. Perhaps there is a potential difference between carbon and the metal, leading to electrochemical corrosion.

I’ve also struggled with this question for a long time. I previously posted a query asking whether, at room temperature, when stainless steel comes into contact with carbon steel, it’s electrochemical corrosion that occurs more often, or rather carbonization corrosion, also known as carburization corrosion. Many technical books attribute the phenomenon of carbon steel and stainless steel coming into contact at room temperature to carburization corrosion; I’m confused??????? I’m hoping for experts’ insights!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Carbide corrosion requires a certain temperature (425–815°C); the higher the temperature, the faster the carbon atoms move. Therefore, the carburization corrosion of composite plates is very minimal. (Additionally, carbon has very low solubility in austenite. At higher temperatures, carbon continuously diffuses toward the boundaries of austenite grains. Meanwhile, Cr atoms move slowly and fail to compensate for the loss of Cr atoms at these boundaries; this results in chromium depletion at the grain boundaries. ）