Flashcards for Chapter 1: Crystal Structures of Metals

These flashcards cover key concepts of crystal structures of metals, including definitions and characteristics related to metal properties and deformation.

Crystal Structure

The arrangement of atoms in a cryst’al, defined by the repeating unit cells forming a 3D lattice.

Unit Cell

The smallest repeating unit of a crystal lattice that retains the symmetry and properties of the entire structure.

BCC (Body Centered Cubic)

A crystal structure with atoms at the corners and one atom in the center of the cube, totaling 2 atoms per unit cell.

FCC (Face Centered Cubic)

A crystal structure with atoms at the corners and centers of each face of the cube, totaling 4 atoms per unit cell.

HCP (Hexagonal Close Packed)

A crystal structure where atoms are tightly packed in a hexagonal arrangement, with a total of 2 atoms per unit cell.

Lattice Parameters

Measurements defining the size and shape of the unit cell in a crystal lattice, including edge lengths and angles.

Slip Plane

A plane in a crystal structure where slip occurs, which is crucial for the plastic deformation of metals.

Ductility

The ability of a material to undergo significant plastic deformation before rupture, often assessed through its slip systems.

Atomic Packing Factor (APF)

The fraction of volume in a crystal structure that is occupied by atoms; a measure of how closely atoms are packed.

Slip System

The combination of a slip direction and a slip plane in crystal mechanics that describes how materials deform under stress.