martensitic steel

Why Is Martensite So Hard?

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Why Is Martensite So Hard? Martensite in steel is only extremely hard because it is full of carbon and stuck dislocations. Martensite in very low carbon iron is the ferrite phase formed by a martensitic transformation. Its properties are no different from ferrite formed in the usual way by a diffusive transformation; it is rather

What Happens To Steel When It’s Heated?

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What Happens To Steel When It’s Heated? Thermal Expansion Metal expands when heated. Length, surface area and volume will increase with temperature. The scientific term for this is thermal expansion. … Thermal expansion occurs because heat increases the vibrations of the atoms in the metal. Can stainless steel be heated up? Ferritic stainless steels cannot