Chinese Journal of Lasers, Volume. 45, Issue 3, 302004(2018)
Effect of Annealing Method on Microstructure and Mechanical Propertiesof TA15 Titanium Alloys by Laser Deposition Manufacturing
By using TA15 spherical powder as the raw material, the bulk specimens of TA15 titanium alloy are formed by laser deposition manufacturing. The effects of single-annealing and duplex-annealing on microstructures, tensile properties at room temperature, and anisotropy of TA15 titanium alloys are studied. The results show that, there exist significant differences in the α-phase morphologies under the two annealing methods, tensile properties at room temperature are characterized by high strength and low plasticity due to the influence of β columnar grain boundary, and the deformation in the deposition direction is relatively large. The duplex-annealing can make obvious improvements on the strength and plastic anisotropy. The micro hardness under single-annealing is hardly influenced by the increase of annealing temperature, in contrast, that under duplex-annealing increases slightly.
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Qin Lanyun, Xu Lili, Yang Guang, Wang Wendong, Ni Jiaqiang, Shang Chun. Effect of Annealing Method on Microstructure and Mechanical Propertiesof TA15 Titanium Alloys by Laser Deposition Manufacturing[J]. Chinese Journal of Lasers, 2018, 45(3): 302004
Category: laser manufacturing
Received: Aug. 7, 2017
Accepted: --
Published Online: Mar. 20, 2018
The Author Email: Guang Yang (yangguang@sau.edu.cn)