What are inclusions in a metal?

Inclusions in a metal refer to small particles or impurities that are embedded within the metal matrix. These unwanted substances can originate from various sources, such as flux used during casting, reactions with the surrounding environment, or contamination during processing.

The presence of inclusions can negatively impact the mechanical properties of a metal, including its machinability. They can lead to wear on cutting tools, increase the chance of unexpected tool breakage, and result in poor surface finishes on the machined parts. Therefore, understanding inclusions is crucial for manufacturing processes, as they play a significant role in determining the performance characteristics of the metal during machining operations.

While enhancing machinability, improving corrosion resistance, and strengthening metal are important considerations in metallurgy, they do not accurately describe what inclusions are or how they function within the metal structure.