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A galvanic cell formed due to residual stresses is known as ________

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A galvanic cell formed due to residual stresses is known as ________

(a) Stress cell

(b) Residual cell

(c) Residual ion

(d) Admiralty cell

I had been asked this question during an interview.

Enquiry is from Types of Corrosion and Oxidation in division Imperfection in Metal Crystals, Fracture, Corrosion and Oxidation of Engineering Material & Metallurgy

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Right choice is (a) Stress cell

For explanation I would say: A galvanic cell can be formed due to various residual stresses in a metal. The stressed region is more active and anodic in nature. These cells can be formed due to dislocation density in a cold worked metal or in a polycrystalline metal.

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