Migration Dynamics of a Σ=3 {112} Boundary in Aluminum
- 1 January 1993
- journal article
- Published by Springer Nature in MRS Proceedings
Abstract
We present a study of the structure and migration mechanisms of the Σ=3 {112} boundary in aluminum. Measurements of the static boundary, using both High Resolution Transmission Electron Microscopy (HRTEM) and the α-fringe technique, are consistent with the lowest energy boundary structure that is predicted by the Embedded Atom Method (EAM). HRTEM observations of the migrating boundary are also presented. The boundary is mobile and upon translation produces coherent {111} twin boundary steps. The atomistic processes that are involved in this migration are considered in terms of the required twinning shears and the results of molecular dynamics simulations using the EAM. The initial nucleation of steps in the boundary appears to be electron beam induced.Keywords
This publication has 11 references indexed in Scilit:
- The influence of grain boundary inclination on the structure and energy of σ = 3 grain boundaries in copperPhilosophical Magazine A, 1992
- Theoretical prediction and direct observation of the 9Rstructure in AgPhysical Review Letters, 1992
- HREM study of a ∑= 3{112} twin boundary in aluminiumPhilosophical Magazine Letters, 1991
- The role of sputtering and displacement damage in the electron SCRIBE processPhilosophical Magazine Letters, 1991
- Embedded-atom method: Derivation and application to impurities, surfaces, and other defects in metalsPhysical Review B, 1984
- Semiempirical, Quantum Mechanical Calculation of Hydrogen Embrittlement in MetalsPhysical Review Letters, 1983
- Periodic grain boundary structures in aluminium I. A combined experimental and theoretical investigation of coincidence grain boundary structure in aluminiumProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1977
- Solid State DiffusionPhysics Today, 1977
- Electron radiation damage near the threshold energy in aluminumRadiation Effects, 1972
- Positron-Electron Differences in Energy Loss and Multiple ScatteringPhysical Review B, 1954