Engineering Materials
Which of the following statement is true about brittle fracture?

High temperature and low strain rates favour brittle fracture
Many metals with hexagonal close packed (H.C.P) crystal structure commonly show brittle fracture
Brittle fracture is always preceded by noise
Cup and cone formation is characteristic for brittle materials

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Engineering Materials
A coarse grained steel

Is less tough and has a greater tendency to distort during heat treatment
Is less tough and has a less tendency to distort during heat treatment
Is more ductile and has a less tendency to distort during heat treatment
Is more ductile and has a greater tendency to distort during heat treatment

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