1 - Brittle Fracture

Question 1

,,,,,,, is the sudden rapid fracture under stress (residual or applied) where the material exhibits little or no evidence of ductility or plastic deformation

Answer 1

Brittle fracture

Question 2

Brittle fracture exhibits little or no evidence of ,,,,,

Answer 2

ductility or plastic deformation

Question 3

Important factors for brittle fracture to occure

Answer 3

1- Material fracture toughness
2-Presence of embrittling phases
3-Steel cleanliness and grain size
4-Material Thickness
5- Material temperature

Question 4

Mostly brittle fracture occurs only at temperatures below the ,,,,,, (or ductile-to-brittle transition temperature)

Answer 4

Charpy impact transition temperature

Question 5

Brittle fracture surface will be composed largely of ,,,,,,,,,and very little microvoid coalescence.

Answer 5

cleavage, with limited intergranular

cracking