What type of indication often results from excessive working in the forging process?

In the context of forging processes, indications like "burst" occur due to excessive working, where the material is subjected to high levels of stress and strain. This excessive deformation can lead to a situation where the internal structure of the metal cannot withstand the stresses imposed on it, resulting in a rupture or burst. These bursts are often found on the surface and can create a significant flaw, impacting the integrity of the forged part.

Understanding this helps in recognizing that a burst indication signifies a critical failure point and emphasizes the importance of controlling the forging process parameters to prevent such defects. In contrast, other indications like flake, lamination, and seam are related to different types of material issues or flaws that do not directly correlate with excessive working in the forging process. Thus, the answer correctly identifies a specific consequence of improper forging practices.