![]() The clamps in stock should be inspected to ensure that the metal had not been weakened by overheating during the upset forging operation. The clamps should be macroetched before cadmium plating to detect overheating. Recommendations included notifying the supplier of the burned condition on the end of the clamp. Cold inspection A visual (usually final) inspection of the forgings for visible defects, dimensions, weight, and surface condition at room temperature. Evidence that burning was confined to the hinge end of the clamp indicated that the metal was overheated before or during the upset forging operation. The mechanical properties of the metal, especially toughness and ductility, were greatly reduced by burning. Analysis (visual inspection and microscopic and metallographic examination) supported the conclusion that both hinge tabs on the clamp half fractured in a brittle manner as the result of gross overheating, or burning, during forging. When the clamp was removed from the engine, the hinge tabs on one clamp half were found to be broken. Metallurgical & Materials Transactions EĪ ring clamp (8740 (AMS 6322), steel forged and cadmium plated) used for attaching ducts to an aircraft engine became loose after three hours of service.Metallurgical & Materials Transactions B.When the molten metal enters into the mold from two gates and when these two streams of. Metallurgical & Materials Transactions A It is a type of surface defects and a line on the surface can be seen.Metallography, Microstructure & Analysis.Journal of Phase Equilibria & Diffusion. ![]() Journal of Materials Engineering & Performance.Journal of Failure Analysis & Prevention.Advanced Materials & Processes Magazine.ASM Materials Platform for Data Science.
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