1.

Material is said to be ductile if material cross section is not significantly reduced at failure(a) material breaks suddenly at little elongation(b) a large amount of plastic deformation takes place between the elastic limit and thefracture point(c)fracture occurs soon after the elastic limit is passed​

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Explanation:

A ductile material is ONE that can withstand a LARGE AMOUNT of plastic deformation between the elastic limit and the fracture point.

A material that breaks suddenly when elongated or fracture OCCURS in it soon after elastic limit is crossed is called a brittle material.

A ductile material that exhibits extra elongation or deformation and does not fracture is also referred as superplastic material



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