A discontinuity is an interruption in the normal crystalline lattice structure of a metal. It is also called a _______.

A discontinuity is an interruption in the normal crystalline lattice structure of a metal. It is also called a _______.

• A. Flaw
• B. Defect
• C. Crack
• D. All Of The Above

Answer: (A)

Discontinuities in the crystal lattice are called defects. This is the general term for any interruption in the regular arrangement of atoms in a metal. A crack is a specific type of defect that involves a separation in the material and can grow under stress, so it isn’t the umbrella term for all lattice interruptions. A flaw is another word for imperfection, but in welding and materials terminology, the standard and most precise term for a lattice irregularity is defect. Therefore, defect is the best single answer.

Discontinuities in the crystal lattice are called defects. This is the general term for any interruption in the regular arrangement of atoms in a metal. A crack is a specific type of defect that involves a separation in the material and can grow under stress, so it isn’t the umbrella term for all lattice interruptions. A flaw is another word for imperfection, but in welding and materials terminology, the standard and most precise term for a lattice irregularity is defect. Therefore, defect is the best single answer.