Effect of Powder Compact Holding Time on the Microstructure and Properties of Ti-6Al-4V Alloy Produced by Powder Compact Extrusion of a Powder Mixture of HDH Titanium and Al-V Master Alloy


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Ti-6Al-4V (wt%) alloy rods were prepared successfully using a low-cost method that combines mixing HDH titanium, elemental aluminum and Al-V master alloy powders and powder compact extrusion. The microstructure and mechanical properties of Ti-6Al-4V alloy and the effects of powder compact holding time on them were investigated. The results showed that powder compact holding time had a significant effect on the microstructure and mechanical properties of the extruded Ti-6Al-4V alloy rods. With increasing powder compact holding time from 2 to 10 min., the microstructure of the extruded rods became more homogeneous, and their UTS decreased from 1300 to 1215MPa and the elongation to fracture increased from 7.1 to 10.2%. The tensile properties of the Ti-6Al-4V alloy rods produced by powder compact extrusion of the powder mixture are comparable to those of Ti-6Al-4V alloy produced by ingot metallurgy and thermomechanical processing.



Edited by:

M. Ashraf Imam, F. H. (Sam) Froes and Ramana G. Reddy




F. Yang et al., "Effect of Powder Compact Holding Time on the Microstructure and Properties of Ti-6Al-4V Alloy Produced by Powder Compact Extrusion of a Powder Mixture of HDH Titanium and Al-V Master Alloy", Key Engineering Materials, Vol. 551, pp. 67-72, 2013

Online since:

May 2013




[1] L. Li, A study on hot extrusion of Ti–6Al–4V using simulations and experiments, International Journal of Mechanical Sciences, 44 (2002) 2415-2425.

DOI: https://doi.org/10.1016/s0020-7403(02)00173-x

[2] S. Zherebtsov, G. Salishchev, and W. Łojkowski, Strengthening of a Ti–6Al–4V titanium alloy by means of hydrostatic extrusion and other methods, Materials Science and Engineering: A, 515 (2009) 43-48.

DOI: https://doi.org/10.1016/j.msea.2009.03.005

[3] R. Lapovok, D. Tomus, and B. Muddle, Low-temperature compaction of Ti–6Al–4V powder using equal channel angular extrusion with back pressure, Materials Science and Engineering: A, 490 (2008) 171-180.

DOI: https://doi.org/10.1016/j.msea.2008.01.075

[4] D. Zhang, S. Raynova, V. Nadakuduru, P. Cao, B. Gibbitas, et al., Consolidation of Titanium, and Ti-6Al-4V Alloy Powders by Powder Compact Forging, Materials Science Forum, 618-619 (2009) 513-516.

DOI: https://doi.org/10.4028/www.scientific.net/msf.618-619.513

[5] V. A. R. Henriques, P. P. d. Campos, C. A. A. Cairo, and J. C. Bressiani, Production of Titanium Alloys for Advanced Aerospace Systems by Powder Metallurgy, Materials Research, 8 (2005) 443-446.

DOI: https://doi.org/10.1590/s1516-14392005000400015

[6] Y. Liu, L. Chen, W. Wei, H. Tang, B. Liu, et al., Improvement of Ductility of Powder Metallurgy Titanium Alloys by Addition of Rare Earth Element, J. Mater. Sci. Technol., 22 (2006) 465-469.

[7] F. Yang, D. L. Zhang, H. Y. Lu, B. Gabbitas, Preparation, Microstructure and Properties of Ti-6Al-4V Rods by Powder Compact Extrusion of Powder Mixture. Key Engineering Materials, 520 (2012) 70-75.

DOI: https://doi.org/10.4028/www.scientific.net/kem.520.70

[8] M. T. Jia, D. L. Zhang, B. Gabbitas, Comparison of Blended Elemental (BE) and Mechanical Alloyed (MA) Powder Compact Forging into Ti-6Al-4V Rocker Arms, Key Engineering Materials, 520 (2012) 82-88.

DOI: https://doi.org/10.4028/www.scientific.net/kem.520.82

[9] Y. Y. Chen, F. Yang, F. T. Kong, S. L. Xiao, Microstructure, Mechanical Properties, Hot Deformation and Oxidation Behavior of Ti–45Al–5. 4V–3. 6Nb–0. 3YAlloy, Journal of Alloy and Compound, 498 (2010) 95–101.

DOI: https://doi.org/10.1016/j.jallcom.2010.03.118

[10] M.N. Gungor, I. Ucok, L.S. Kramer, H. Dong, et. al., Microstructure and Mechanical Properties of Highly deformed Ti-6Al-4V, Mater. Sci. Eng. A410-411(2005)369-374.

DOI: https://doi.org/10.1016/j.msea.2005.08.141

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