Engineering Materials
Stress relaxation is the phenomenon

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

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Engineering Materials
The temperature required for full annealing in hypereutectoid steel is

30° C to 50° C below upper critical temperature
30° C to 50° C above lower critical temperature
30° C to 50° C above upper critical temperature
30° C to 50° C below lower critical temperature

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