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New high-strength Ti–Al–V–Mo alloy: from high-throughput composition design to mechanical properties

  • Di Wu
  • Wan-lin Wang
  • Li-gang Zhang
  • Zhen-yu Wang
  • Ke-chao ZhouEmail author
  • Li-bin LiuEmail author
Article
  • 16 Downloads

Abstract

The high-throughput diffusion-multiple technique and thermodynamics databases were used to design new high-strength Ti alloys. The composition–microstructure–property relationships of the Ti64–xMo alloys were obtained. The phase fraction and composition of the α and β phases of the Ti64–xMo alloys were calculated using the Thermo-Calc software. After aging at 600°C, the Ti64–6Mo alloy precipitated ultrafine α phases. This phenomenon was explained on the basis of the pseudo-spinodal mechanism by calculating the Gibbs energy curves of the α and β phases of the Ti64–xMo alloys at 600°C. Bulk forged Ti64–6Mo alloy exhibited high strength and moderate plasticity after α/β-phase-field solution treatment plus aging. The tensile properties of the alloy were determined by the size and morphology of the primary and secondary α phases and by the β grain size.

Keywords

high-strength titanium alloy Ti–6Al–4V–xMo diffusion multiple Thermo-Calc microstructure and mechanical properties 

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Notes

Acknowledgements

The authors acknowledge financial support from the National Key Technologies R&D Program of China (Grant No. 2016YFB0701301 and 2018YFB0704100), National Natural Science Foundation of China (Grant No. 51671218 and 51501229), National Key Basic Research Program of China (973 Program) (Grant No. 2014CB644000) and State Key Laboratory of Powder Metallurgy, Central South University, Changsha, China.

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Copyright information

© University of Science and Technology Beijing and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.School of Metallurgy and EnvironmentCentral South UniversityChangshaChina
  2. 2.School of Material Science and EngineeringCentral South UniversityChangshaChina
  3. 3.Key Laboratory of Non-Ferrous Metallic Materials Science and EngineeringMinistry of EducationChangshaChina
  4. 4.State Key Laboratory of Powder MetallurgyChangshaChina

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