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

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

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
Amorphous material is one

Which emits fumes on melting
In which there is no definite atomic structure and atoms exist in a random pattern just as in a liquid
In which atoms align themselves in a geometric pattern upon solidification
Which is not attacked by phosphorous

ANSWER DOWNLOAD EXAMIANS APP