Engineering Materials
Induction hardening is the process of

Increasing hardness throughout
Hardening surface of work-piece to obtain hard and wear resistant surface
Heating and cooling rapidly
Inducing hardness by continuous process

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Engineering Materials
Nickel in steel

Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties
Improves cutting ability and reduces hardenability
Gives ductility, toughness, tensile strength and anti-corrosion properties
Improves wear resistance, cutting ability and toughness

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