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Explain how very small quantities of nickel in copper can increase the strength of the latter...

Explain how very small quantities of nickel in copper can increase the strength of the latter ?

Please explian in a good words!!! Thanks

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Answer #1

Strength
Solid solution strengthening of copper is a common procedure. Small amounts of an alloying element(Nickle) added to molten copper will completely dissolve and form a homogeneous microstructure (a single phase). At some point, additional amounts of the alloying element will not dissolve; the exact amount is dependent on the solid solubility of the particular element in copper. When that solid solubility limit is exceeded, two distinct microstructures form with different compositions and hardnesses. Unalloyed copper is relatively soft compared to common structural metals.  

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