Coatings, Journal Year: 2024, Volume and Issue: 14(12), P. 1533 - 1533

Published: Dec. 4, 2024

The Peierls–Nabarro dislocation model is applied in this paper to investigate the [110] full dislocations on (001), (111), and (1¯10) planes pure Al, as well (110) small-angle tilting grain boundary (SATGB) composed of them. findings demonstrate that stress–strain fields both boundaries can be accurately described by a five-term single strain field. Peierls stresses for edge-type are 67.15 MPa, 114.93 847.56 respectively, exhibiting an increasing trend magnitude. As inter-dislocation distance decreases SATGB stress field, half-width, decomposition trend, line energy individual gradually decrease. change divided into three parts: Initially, there slow decrease when greater than ~200 Å. This followed sharp drop further decreases, with slowing down at ~70 Å, where becomes dominant. In final stage, changes strained core synergistically contribute. exhibits increment angle. force Al (001) (111) surfaces exhibit minimal variation between changes, whereas slight observed surface. present study provides valuable insights investigation mechanical properties alloys nanometer-sized grains.

Language: Английский