Role of Vanadium Addition on Hot Deformation Behavior of Aluminum Alloy 5083

• Main Authors: Lijuan Wang, Xiangjie Wang, Xiao Zhu, Xin Xu, Jianzhong Cui, Bin Liao, Xiaodong Wang, Xiaodong Wu
• Format: Article
• Language: English
• Published: MDPI AG 2019-07-01
• Series: Metals
• Subjects: aluminum alloys; vanadium addition; recrystallization; hot deformation; dynamic recovery; activation energy
• Online Access: https://www.mdpi.com/2075-4701/9/7/766

The effect of V addition on the hot deformation behavior of AA5083 was investigated. Single axial compression tests were conducted on the cast and homogenized samples with strain rates ranging from 0.01 to 10 s^−1 and deformation temperatures ranging from 300 to 450 °C. The results showed that the contents of V (0−0.10, in wt.%) do not change the grain size of alloy 5083 significantly in the as cast and homogenized conditions, but the formation of fine Al₃V particles in the alloy with an addition of 0.05 wt.% V can increase the flow stress, and its activation energy is 10.0% higher than that of V-free alloy 5083. The processing maps show that the appropriate process domain for alloy 5083 with 0.05 wt.% V changes at different true strains. The mechanism for deformation softening is discussed as well.