Engineering Materials
Cyaniding is the process of

Adding carbon and nitrogen by heat treatment of steel to increase its surface hardness
Dipping steel in cyanide bath
Reacting steel surface with cyanide salts
Obtaining cyanide salts

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Engineering Materials
Stress relaxation is the phenomenon

In which parts are not loaded
In which deformation tends to loosen the joint and produces a stress reduced
In which stress remains constant on increasing load
Stress reduces on increasing load

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