The effect of deformations passes on the extrusion pressure in axi-symmetric equal channel angular extrusion

Correlative evolution of microstructure, particle dissolution, hardness and strength of ultrafine grained AA6063 alloy during annealing

“…Among well-known SPD techniques, equal channel angular pressing (ECAP) is unique owed to its simplicity [1], mode of deformation [2], homogeneity of deformation [3], possibility of manufacturing with round [4] or rectangular [5] cross sections and possibility of being applied to different initial billet geometries like flat products [6] and in continuous mode [7]. By ECAP processing, grain refinement occurs together with significant strain hardening which results in remarkable enhancement of strength in engineering alloys [8].…”

Simultaneous improvements of the strength and ductility of fine-grained AA6063 alloy with increasing number of ECAP passes

“…The channel intersection angle was 90° and the outer corner curvature angle 22.5°. A strain of one was imposed on the billet at each ECAP pass [15]. ECAP was performed at room temperature and at a ram speed of 1 mm/s.…”

The effects of combination of severe plastic deformation and Shot Peening surface treatment on fatigue behavior of 6082 aluminum alloy

“…The effects of many parame ters such as chemical composition, grain size, disloca tion density and distribution, texture, residual stress, temperature, surface condition, and hardening or softening heat treatments on the fatigue life of metals have been investigated by previous researches [2][3][4][5]. It has been reported that the reduction of grain size not only enhances the monotonic strength properties (according to Hall Petch relation) [6][7][8][9], but it also improves the High Cycle Fatigue (HCF) performance of metals and alloys [10][11][12][13]. This increase has been attributed to the hindering of the fatigue crack initia tion [10].…”