What is a negative effect of combining dissimilar metals in construction?

Combining dissimilar metals in construction can lead to galvanic action, which is a significant concern in metalworking and structural integrity. When two different metals are in contact with each other in the presence of an electrolyte (such as moisture), an electrochemical reaction occurs. This reaction causes one of the metals to corrode faster than it would on its own, while the other metal acts as a cathode, remaining protected. This process can lead to premature failure of the material, posing structural risks and necessitating repairs or replacements.

Galvanic action is particularly critical to understand in construction to ensure the longevity and safety of structures. It highlights the importance of selecting compatible materials or applying protective coatings to mitigate this adverse interaction. The other choices, while related to metal behavior, do not precisely capture the specific process of electrochemical reactions that occur with dissimilar metals.