Materials having ________________ lattice structure are usually the most ductile ?
Correct answer: A. Face centred cubic (fcc)
- A. Face centred cubic (fcc)
- B. Hexagonal close packed (hcp)
- C. Body centred cubic (bcc)
- D. None of these
Explanation
Face-centred cubic metals have many closely packed slip systems, allowing plastic deformation in several directions and giving high ductility. HCP metals have fewer active slip systems and are generally less ductile at ordinary temperatures.
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