Constitutive Analysis and Microstructure Characteristics of As-Homogenized 2198 Al–Li Alloy under Different Hot Compression Deformation Conditions

• Published in: Materials Vol. 16; no. 7; p. 2660
• Main Authors: Li, Huiyu, Li, Xiwu, Yan, Hongwei, Li, Yanan, Geng, Libo, Xun, Chenyang, Li, Zhihui, Zhang, Yongan, Xiong, Baiqing
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 27.03.2023; MDPI
• Subjects: Alloys; Aluminum alloys; Aluminum-lithium alloys; Analysis; Anisotropy; Behavior; Constitutive equations; Constitutive relationships; Deformation; Deformation effects; Dynamic recrystallization; Electron back scatter; Energy dissipation; Finite volume method; Grain boundaries; High strain rate; Hot pressing; Mechanical properties; Microstructure; Misalignment; Parameters; Process mapping; Research methodology; Rheological properties; Rheology; Specialty metals industry; Stress concentration; Stress-strain curves; Temperature; Thermal simulators; True stress; China; hot compression; processing maps; 2198 Al–Li alloy; microstructure evolution

The 2198 Al–Li alloy has unique superiority in mechanical performance and has been extensively used in the aerospace field. In this study, the hot deformation behavior of the 2198 Al–Li alloy was investigated on a Gleeble-1500 thermomechanical simulator with a strain rate of 0.01–10 s−1 in the tempe...