The Improved Mechanical Anisotropy of a Commercial Al–Cu–Mg–Mn–Si (2017) Aluminum Alloy by Cross rolling

Abstract

The optimized thermomechanical process is an effective way to improve and control the properties of metallic alloys. Herein, the influence of unidirectional cold rolling and cross cold rolling on the texture and mechanical properties of a commercial Al─Cu─Mg─Mn─Si (2017) alloy is investigated. The Al sheets successfully prepared by the three cold rolling methods have different dominant texture components, and show different texture transformation routes during solution and aging treatments. In addition, the influence of the rolling direction on the texture of the 2017 alloy is discussed. The cross-rolled sheets subjected to artificial aging show the strongest yield strength of %366 MPa and ultimate tensile strength of %426 MPa, as well as excellent mechanical anisotropy. Its in-plane anisotropy (IPA), r, and Δr values are 0.7%, 0.576, and 0.042, respectively. The effects of texture and precipitates on the anisotropy of aged 2017 alloys are also discussed separately. This work may help to understand the relationship between rolling direction and the mechanical anisotropy of aluminum alloys and provide a basis for industrial production.

High-Temperature Tensile Mechanical Properties and Microstructure of Rolled 6082-T6 Aluminum Alloy Sheets

“…The Schmid factors of the 0 • and 90 • samples were relatively smaller, and their corresponding yield strength was much higher. Huang et al [17] observed the flake-like precipitates in an Al-Cu-Mg-Mn-Si alloy. They found that the precipitates mainly lay on the {100} planes, which indicated a remarkable orientation.…”