High-Temperature Deformation Behavior and Processing Map of 7050 Aluminum Alloy

• Published in: Metals and materials international pp. 69 - 75
• Main Authors: Jun-song Jin, Xin-yun Wang, H. E Hu, Ju-chen Xia
• Format: Journal Article
• Language: English
• Published: 대한금속·재료학회 01.02.2012
• Subjects: 재료공학
• ISSN: 1598-9623; 2005-4149
• DOI: 10.1007/s12540-012-0009-y

The high-temperature deformation behavior and processing map of 7050 aluminum alloy were investigated by tensile tests conducted at various temperatures (340, 380, 420, and 460 °C) with various strain rates of 10−4, 10−3, 10−2, and 0.1 s −1. The results show that the instability region with a peak power dissipation efficiency of 100% occurs at the low deformation temperature region of 340 °C to 380 °C and high strain rates (>10−3s−1). The 7050 aluminum alloy exhibited a continuous dynamic recrystallization domain with power dissipation efficiency of 35% to 60 % in the deformation temperature range of 410 °C to 460 °C and the strain rate range of 10−4-10−3s−1. The domain with a power dissipation efficiency of 35 % to 50 % occurring at high deformation temperatures and strain rates was interpreted to represent dynamic recovery. Dynamic recovery and continuous dynamic recrystallization provide chosen domains for excellent hot workability. KCI Citation Count: 9