Structure of Metals
DOE-HDBK-1017/1-93 GRAIN STRUCTURE AND BOUNDARY
The important information in this chapter is summarized below.
Grain is the region of space occupied by a continuous crystal lattice.
Grain structure is the arrangement of grains in a metal, with a grain having a
particular crystal structure.
Grain boundary is the outside area of grain that separates it from other grains.
Creep is the permanent deformation that increases with time under constant load
Small grain size increases tensile strength and ductility.