Wang Xiaoguo, Zhang Xiaoyuan, Sun Ruijuan, et al. Hot Deformation Behavior of Dispersion Strengthened 6XXX Al Alloy. [J]. Special Casting & Nonferrous Alloys 41(9):1114-1118(2021)
DOI:
Wang Xiaoguo, Zhang Xiaoyuan, Sun Ruijuan, et al. Hot Deformation Behavior of Dispersion Strengthened 6XXX Al Alloy. [J]. Special Casting & Nonferrous Alloys 41(9):1114-1118(2021) DOI: 10.15980/j.tzzz.2021.09.011.
Hot Deformation Behavior of Dispersion Strengthened 6XXX Al Alloy
The hot deformation behaviors of homogenized Mn/Cr-containing aluminum alloys denoted as WQ were investigated systematically by uniaxial compression tests at various deformation temperature and strain rates. The hyperbolic-sine constitutive equation was employed to determine the parameters and activation energies of materials. Based on dynamic material model
the processing maps of WQ alloys were also constructed to reveal safe processing domain and optimize deformation parameters. Attributed to pinning effect of α-Al(MnCr)Si dispersoids
sub-grain rotation and sub-grain boundaries migration are suppressed. Hence
the softening mechanism in WQ alloy is dominated by dynamic recovery at safe processing domain. Cracks are observed in the microstructure of the machining instability zone
the 518th Institute,No.5 Academy of China Aerospace Science and Technology Corporation
State Key Laboratory for Fabrication and Processing of Non-ferrous Metals,General Research Institute for Non-ferrous Metals
Key Laboratory of Ferrous Metallic Materials Science and Engineering,Ministry of Education,School of Materials Science and Engineering,Central South University
Department of Materials Science and Engineering, Shanxi University of Technology