TY - JOUR

T1 - Effect of Heterophase Interfaces on Microstructure and Crystallographic Texture Evolution during Rolling of Directionally Solidified Ag-Cu Eutectic Alloy

AU - LI, Jiehua

AU - Li, Jun

AU - Renk, Oliver

AU - Pippan, Reinhard

AU - Ghosh, Pradipta

PY - 2019/10/31

Y1 - 2019/10/31

N2 - A directionally solidified Ag-Cu eutectic alloy was deformed by rolling to understand the role of heterophase interfaces on the deformation behavior of ultrafine and nanocrystalline face-centred cubic metals. During rolling, the initial 〈220〉 fibre texture was gradually shifted to a Brass type texture for both Ag and Cu phases. More interestingly, a similar path of texture evolution was observed for both the phases at all strain levels. The in-depth transmission electron microscopy analysis revealed that the Ag lamellae deformed primarily by twinning, while the Cu lamellae deformed by twinning and dislocation slip. Furthermore, the special cube-on-cube and twin heterophase interfaces facilitated co-deformation and co-rotation of the adjacent Ag and Cu lamella due to a strong latent hardening effect, which stimulated a similar texture evolution for both phases.

AB - A directionally solidified Ag-Cu eutectic alloy was deformed by rolling to understand the role of heterophase interfaces on the deformation behavior of ultrafine and nanocrystalline face-centred cubic metals. During rolling, the initial 〈220〉 fibre texture was gradually shifted to a Brass type texture for both Ag and Cu phases. More interestingly, a similar path of texture evolution was observed for both the phases at all strain levels. The in-depth transmission electron microscopy analysis revealed that the Ag lamellae deformed primarily by twinning, while the Cu lamellae deformed by twinning and dislocation slip. Furthermore, the special cube-on-cube and twin heterophase interfaces facilitated co-deformation and co-rotation of the adjacent Ag and Cu lamella due to a strong latent hardening effect, which stimulated a similar texture evolution for both phases.

UR - https://doi.org/10.1007/s11661-019-05515-3

U2 - 10.1007/s11661-019-05515-3

DO - 10.1007/s11661-019-05515-3

M3 - Article

VL - 51.2020

SP - 368

EP - 379

JO - Metallurgical and materials transactions. A, Physical metallurgy and materials science

JF - Metallurgical and materials transactions. A, Physical metallurgy and materials science

SN - 1073-5623

IS - 1

ER -