Cryogenic and Room Temperature ECAP Consolidation of Blended Elemental Powders of Aluminum and Copper

Namur, Ricardo Sanson; Azevedo, Maxwell; Izumi, Marcel Tadashi; Aguiar, Denílson José Marcolino de; Zilnyk, Kahl Dick; Cintho, Osvaldo Mitsuyuki

doi:10.1590/1980-5373-mr-2021-0414

Cited by 2 publications

(1 citation statement)

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“…The deformation texture after four passes also displayed a basal-oriented trait, with the C-axes of most grains parallel to the transverse direction. However, due to the occurrence of annealing twins and resulting orientation fluctuations, the texture alignment changed [19]. This change can be attributed to the formation of annealing twins, which can alter the grain orientation during the grain growth process, consequently affecting the strength of the texture.…”

Section: Resultsmentioning

confidence: 99%

Mechanical characteristics and crystallographic texture of AA5083 during Equal Channel Angular Pressing Technique

Singh,

Agrawal

2024

E3S Web Conf.

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AA5083 bars processed by four pass ambient Equal Channel Angular Pressing were subjected to intersection annealing, where time and temperature were varied after each pass. The microstructures, texturing and compressive characteristics of the samples were meticulously examined. Due to the high annealing temperatures, both ultimate tensile strength and compressive stresses decreased with increasing grain size. However, intersection annealing at room temperature resulted in the best compressive yield strength. The deformation behavior of AA5083 billets was investigated using finite element analysis. Electron back scatter diffraction was employed to examine the texture of the Equal Channel Angular Pressed billet crystals. Extensive research was conducted on the tensile properties and Vickers microhardness. The finite element simulations revealed that the 900 die exhibited a significantly more uniform dispersion of plastic strain compared to the 1200 die. The renewal of additional slip mechanisms during the four Pass process was attributed to the grain refining that occurred after the 1-Pass and 2-Pass stages. Equal Channel Angular Pressing successfully produced a homogeneously ultra-fine grained microstructure. The increase in strength was attributed to grain refining and dislocation strengthening. Molecular dynamics simulations were employed to study the ECAPed approach of AA5083 providing insights into the deformation behavior and polycrystal formation.

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Section: Resultsmentioning

confidence: 99%