Anisotropic behavior of TiB2 nanoparticles reinforced 2024Al composites rolling sheet

Abstract

The in-plane anisotropy (IPA) of mechanical properties existed in plate products is often undesired since it limits the industrial application and increases the difficulty of material processing. It is thus one of the important factors which requires strict control during the manufacture of highperformance aluminum alloy plates. The anisotropic behavior of TiB 2 /2024Al composite rolling sheet under different heat treatment is studied in this article. T4 heat treated specimen shows good isotropy of yield strength and its texture components are significantly weakened compared with traditional Al alloys. The evolution of microstructures for T4 specimen was studied. The submicron TiB 2 particles increase the driving force of recrystallization during rolling process and static recrystallization (SRX) is stimulated, thus induces texture randomization. Anisotropic behavior of yield strength occurs in specimen after T3 heat treatment. It is supposed that the difference in the activation of slip system under different loading direction gives rise to this anisotropy.

Selective Anisotropy of Mechanical Properties in Inconel718 Alloy

“…The YS anisotropy arises from the difficulty degree when operating slip systems at various loading directions [ 21 ], whereas the ductility/toughness anisotropy is dependent on the subsequent deformation and fracture behaviors of materials, including crack initiation and propagation. After yielding, the increased loading leads to uniform deformation, particularly with the help of particles that play a role in slip homogenization [ 22 ].…”

“…The YS anisotropy arises from the difficulty degree when operating slip systems at various loading directions [21], whereas the ductility/toughness anisotropy is dependent The crystallographic texture is frequently reported to produce significantly anisotropic properties, i.e., the YS [14] and Charpy toughness [15] in the pipeline steels. The pronounced texture discrepancy is undetected, evidenced by the similar XRD patterns on the RD-TD and RD-ND planes even after various treatments (Figure 5).…”

An Investigation of Microstructural Evolution, Tensile Properties and Work-Hardening Behavior of Nanosized TiB2/Al-Cu-Mn Composites

“…Those nanoparticle agglomerates will lead to increase in stress localization and thereby deteriorate the nanoparticle strengthening effect. Although great efforts have been made, preventing nanoparticles from agglomerating during processing remains a major challenge [ 16 , 17 , 18 , 19 , 20 , 21 , 22 ].…”