Effects of Heat-Treatment on Microstructures and Mechanical Properties of Hot Deformed TiB/Ti-6Al-4V Matrix Composites

Abstract:

In this paper, TiB reinforced Ti-6Al-4V matrix composites were successfully fabricated using a spark plasma sintering, hot rolling and heat treating process. (Transformed β-Ti + secondary α-Ti) domains were formed in TiB/TMCs after heat treatment. The size of these domains increases from 2.5 μm to 4.6 μm with the increase of solution time. The aspect ratio of whiskers monotonously decreases along with the solution time extending. The highest ultimate tensile strength of 1332 MPa and yield-strength of 1315 MPa were achieved by (940 °C, 15min+ water-quenching+537 °C, 4h) TMC.

• Periodical: Materials Science Forum (Volume 960)
• Pages: 135-139
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.960.135
• Online since: June 2019
• Authors: Zheng Yang Hu, Zhao Hui Zhang*, Qi Song, Shi Pan Yin, Hao Wang, Xian Yu Li
• Keywords: Heat-Treatment, Hot Deformation, Tensile Property, Titanium Matrix Composites

References

[1] F. Ma, C. Wang, P. Liu, W. Li, X. Liu, X. Chen, K. Zhang, Q. Han, Microstructure and mechanical properties of Ti matrix composite reinforced with 5 vol.% TiC after various thermo-mechanical treatments, Journal of Alloys and Compounds, 758 (2018) 78-84.

DOI: 10.1016/j.jallcom.2018.05.134

[2] S. Decker, J. Lindemann, L. Krüger, Metal matrix composites based on Ti-6242 synthesized by Spark Plasma Sintering, Materials Science and Engineering: A, 732 (2018) 35-40.

DOI: 10.1016/j.msea.2018.06.103

[3] Z. Hu, X. Cheng, Z. Zhang, H. Wang, S. Li, G.F. Korznikova, D.V. Gunderov, F. Wang, The influence of defect structures on the mechanical properties of Ti-6Al-4V alloys deformed by high-pressure torsion at ambient temperature, Materials Science and Engineering: A, 684 (2017) 1-13.

DOI: 10.1016/j.msea.2016.12.033

[4] Z. Hu, X. Cheng, S. Li, H. Zhang, H. Wang, Z. Zhang, F. Wang, Investigation on the microstructure, room and high temperature mechanical behaviors and strengthening mechanisms of the (TiB+TiC)/TC4 composites, Journal of Alloys and Compounds, 726 (2017) 240-253.

DOI: 10.1016/j.jallcom.2017.08.017

[5] Y.G. Liu, M.Q. Li, The coordination behaviors of alpha and beta phases with different grain sizes in Ti-6Al-4V subjected to surface severe plastic deformation, Materials Science and Engineering: A, 745 (2019) 291-299.

DOI: 10.1016/j.msea.2018.12.112

[6] C. Zhang, X. Li, S. Zhang, L. Chai, Z. Chen, F. Kong, Y. Chen, Effects of direct rolling deformation on the microstructure and tensile properties of the 2.5vol% (TiBw+TiCp)/Ti composites, Materials Science and Engineering: A, 684 (2017) 645-651.

DOI: 10.1016/j.msea.2016.12.113

[7] J. Xiang, Y. Han, J. Le, G. Huang, L. Xiao, J. Liu, W. Lu, Effect of temperature on microstructure and mechanical properties of ECAPed (TiB + La2O3)/Ti-6Al-4V composites, Materials Characterization, 146 (2018) 149-158.

DOI: 10.1016/j.matchar.2018.10.004

[8] L. Xie, C. Jiang, W. Lu, K. Zhan, Q. Feng, X. Wu, F. Wang, The recrystallization behavior of surface deformation layer of (TiB+TiC)/Ti–6Al–4V composite during isothermal annealing, Materials Science and Engineering: A, 530 (2011) 239-243.

DOI: 10.1016/j.msea.2011.09.081

[9] L. Xie, C. Jiang, V. Ji, Thermal relaxation of residual stresses in shot peened surface layer of (TiB+TiC)/Ti–6Al–4V composite at elevated temperatures, Materials Science and Engineering: A, 528 (2011) 6478-6483.

DOI: 10.1016/j.msea.2011.04.075

[10] Y. Lu, M. Aristizabal, X. Wang, B. Pang, Y.L. Chiu, Z.T. Kloenne, H.L. Fraser, M.H. Loretto, The influence of heat treatment on the microstructure and properties of HIPped Ti-6Al-4V, Acta Materialia, 165 (2019) 520-527.

DOI: 10.1016/j.actamat.2018.12.025