Evolution of microstructure and properties in alpha-brass after iterative processing

摘要: Iterative strain-recrystallization cycles have been applied to alpha-brass in order enhance ductility while maintaining tensile strength. Five iterations of 25 pct uniaxial strain followed by a 300 second anneal at 665 °C were used achieve the desired properties. This article concentrates on assessment effect processing microstructure evolution and crystallographic details grain boundary population, after each cycle. The overall aim work is provide further knowledge mechanisms engineering. results demonstrate that there distinctive pattern both Σ3 population density (in coincidence site lattice notation) proximity Σ reference structure, as function treatment cycle iteration. During first two cycles, proportion Σ3s drops, which present shows an essential step homogenize preparation for subsequent required property enhancements develop. It proposed this general feature all engineering iterative where cold reduction involved. Furthermore, Σ3n (n>1) boundaries do not build up concomitant with fraction because they are removed “Σ3 regeneration model.”