Propagation of Elastic Waves in Equiaxed Iron Polycrystals with Aligned [001] Axes

摘要: A polycrystalline material is composed of numerous discrete grains, each having a regular, crystalline atomic structure. The elastic properties the grains are anisotropic and their crystallographic axes differently oriented. Thus nature wave propagation in number structural materials, such as austenitic stainless steel welds castings, used nuclear power plants stems from details grain structures. Columnar structure seen while microstructure cast could vary randomly oriented equiaxed to highly columnar grains. An acoustic travelling through microscopically inhomogeneous medium suffers scattering consequently has frequency dependent attenuation phase velocity that depend on This paper motivated by desire better understand these effects.