Studies on the influences of forging processes on the microstructures and properties of TA15 rods

Li Xiaoyu; Tang Min; Liu Xin; Xiao Qiang; Qin Haixu

doi:10.7513/j.issn.1004-7638.2024.01.009

Volume 45 Issue 1

Feb. 2024

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Li Xiaoyu, Tang Min, Liu Xin, Xiao Qiang, Qin Haixu. Studies on the influences of forging processes on the microstructures and properties of TA15 rods[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(1): 57-64. doi: 10.7513/j.issn.1004-7638.2024.01.009

Citation:

Li Xiaoyu, Tang Min, Liu Xin, Xiao Qiang, Qin Haixu. Studies on the influences of forging processes on the microstructures and properties of TA15 rods[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(1): 57-64. doi: 10.7513/j.issn.1004-7638.2024.01.009

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Studies on the influences of forging processes on the microstructures and properties of TA15 rods

doi: 10.7513/j.issn.1004-7638.2024.01.009

Li Xiaoyu^{1, 2
,},
Tang Min^{1, 2},
Liu Xin^{1, 2},
Xiao Qiang^{1, 2},
Qin Haixu^{1, 2}

1.
Pangang Group Research Institute Co., Ltd., State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua 617000, Sichuan, China
2.
Chengdu Institute of Advanced Metallic Materials Technology and Industry Co., Ltd., Chengdu 610300, Sichuan, China

Received Date: 2023-08-07
Publish Date: 2024-02-01

Abstract

Abstract

TA15 rods with the diameter of 100 mm and 200 mm were produced by free forging and radial forging respectively. In this study, the effects on the microstructures and mechanical properties of TA15 rods were investigated. It is shown that there are dramatic differences in the microstructures at different positions of two rods. Deformation occurs in the center of the radial forged rods with a considerable amount of primary α phase in the microstructure, ascertained by the irregular and deformed appearance of the primary and secondary α phases. The content of α phase in two rods is lowered from the center to the edge, while the amount of β transformation phases increase. The phase morphology change in the free forged rod is negligible after annealing. However, a great quantity of blocky α phase and tiny recrystallized grains appear in the microstructure of radial forged rod after annealing. The tensile strength, area reduction and impact energy of the rod are increased by radial forging. The long and thin lamellar structures provide more interfaces of α/β phases, promoting fast diffusion at high temperature and leading to the results that the high-temperature properties of free forged rod are worse compared to that of the radial forged rod.
- TA15,
- free forging,
- radial forging,
- microstructure,
- mechanical properties

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References(24)

References

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