Cymcap Hot Crack !!link!! -

Copper and copper-clad steel conductors become significantly softer as they approach their melting point (approx. 1085°C). However, during the rapid heating of a fault, thermal expansion generates immense mechanical stress. If the conductor is rigidly clamped or restricted, the stress cannot be relieved by movement. This can cause the material to tear or crack, particularly at points of geometric stress (bends) or connection points.

Samples were polished and etched with 5% FeCl₃ in HCl–ethanol. Grain boundaries and secondary phases were analyzed via SEM with energy-dispersive X-ray spectroscopy (EDS). DSC was used to determine solidus and liquidus temperatures. cymcap hot crack

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