Effect of deformation condition on plastic anisotropy of as-rolled 7050 aluminum alloy plate

• Published in: Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2009-07, Vol.515 (1), p.1-9
• Main Authors: Xin-yun, Wang, Hu, H.E., Ju-chen, Xia
• Format: Article
• Language: English
• Subjects: Aluminum alloy; Applied sciences; Cross-disciplinary physics: materials science; rheology; Elasticity. Plasticity; Exact sciences and technology; Materials science; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology; Metals. Metallurgy; Microstructure; Other heat and thermomechanical treatments; Phase diagrams and microstructures developed by solidification and solid-solid phase transformations; Physics; Plastic anisotropy; Precipitation; Texture; Treatment of materials and its effects on microstructure and properties
• ISSN: 0921-5093; 1873-4936
• DOI: 10.1016/j.msea.2009.03.061

Plastic anisotropy of the as-rolled 7050 aluminum alloy plate was investigated by tensile tests conducted at different temperatures (340 and 460 °C) and different strain rates of 1.0 × 10 −4, 1.0 × 10 −2, 0.1, and 1 s −1. The results show that the plastic strain ratio of the as-rolled 7050 aluminum alloy plate deformed at 340 °C is not sensitive to strain rate, which increases with increasing strain rate when the alloy was deformed at 460 °C. Alloy elements of the alloy deformed at 460 °C and different strain rates are in solution. The plastic strain ratio of the alloy deformed at 460 °C was affected by texture components, especially the Brass orientation {0 1 1}〈2 1 1〉. Dynamic precipitation appears when the alloy was deformed at 340 °C and different strain rates, and the alloy deformed is in over aged condition. Microstructure is the main influence of plastic anisotropy of the alloy deformed at 340 °C.