I have plenty of ideas but need to start one that really crucial and on-demand in this field and some advice from experts will be appreciated. on the welding cracking and failure analysis specifically.
Welding stainless steel clad plates or pipes with carbon steel or low carbon steel presents several challenges from a mechanical perspective:
Careful planning, appropriate selection of welding procedures, filler materials, and potential post-weld treatments are required to deal with these challenges. Engineers should consider factors such as the specific grades of stainless and carbon steel being used, the desired mechanical properties of the weld, and the intended application of the final product.
The main challenges of SS clad using normal steel are
-Reduces the welding strength and low in corrosion resistances
-Loss it's real thermal and mechanical properties of material
The main problem arises from the fact, that during welding an alloying of the unalloyed (black) steel occurs, i.e. chrom, nickel etc are diffusing from the high alloyed side to the unalloyed one. Although this zone is narrow, it hardens considerably. The so called martensite is formed. This kind of structure is known to be susceptible to hydrogen embrittlement. In the attachment this exempflied by two failure cases.
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