Esterer Gießerei

Esterer Gießerei - Martensite


Martensite is a brittle and fine-pinned structure in steel. Great breaking stress and hardness are typical for it, but it does not have any fracture strain.

We form martensite with quenching of austenite. The cooling happens very fast, so carbon does not diffuse from the grid and a tetragonal spatially centred structure develops. At tempering with temperatures of up to 720 degrees Celsius and with a long annealing time martensite transforms into ferrite with enclosed cementite in spherical form.

Wiki – Casting technique

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