Effect of recrystallization annealing on microstructures and properties of TA1 electron beam welded joint

DENG Jian; BAI Wei; LU Xin; LI Chao

doi:10.7513/j.issn.1004-7638.2025.03.010

Volume 46 Issue 3

Jun. 2025

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Article Navigation > IRON STEEL VANADIUM TITANIUM > 2025 > 46(3): 60-64

DENG Jian, BAI Wei, LU Xin, LI Chao. Effect of recrystallization annealing on microstructures and properties of TA1 electron beam welded joint[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(3): 60-64. doi: 10.7513/j.issn.1004-7638.2025.03.010

Citation:

DENG Jian, BAI Wei, LU Xin, LI Chao. Effect of recrystallization annealing on microstructures and properties of TA1 electron beam welded joint[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(3): 60-64. doi: 10.7513/j.issn.1004-7638.2025.03.010

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Effect of recrystallization annealing on microstructures and properties of TA1 electron beam welded joint

doi: 10.7513/j.issn.1004-7638.2025.03.010

1.
Pangang Group Research Institute Co., Ltd., State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua 617000, Sichuan, China
2.
Pangang Group steel Vanadium & Titanium Co., Ltd., Panzhihua 617000, Sichuan, China

Received Date: 2024-05-13
Publish Date: 2025-06-30

Abstract

Abstract

Recrystallization annealing was performed on 30 mm thick TA1 plates with electron beam welding. Metallographic examination, tensile and impact tests were performed on the welded joint in order to study the effect of recrystallization annealing process on the microstructures and mechanical properties of the joints. The results show that the formation of high hardness serrated α phase and acicular α' phase increases the yield and tensile strength of the welded joint and the joint with 900 ℃ 2 h recrystallization annealing process, but the plasticity (i.e., elongation after fracture) and toughness (i.e., impact energy) of the joint decrease significantly. The equiaxed α phase of the base metal and the approximate equiaxed α phase obtained at 700 ℃ 2 h and 800 ℃ 2 h recrystallization annealing process are conducive to improving the ductility and toughness, thus the base metal and the joint under the corresponding process have higher ductility and toughness. The strength and toughness of the joint are best matched at the 800 ℃ 2 h annealing process.
- TA1,
- vacuum electron beam welding,
- recrystallization annealing,
- microstructures,
- mechanical properties

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