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Strong and Ductile Ti-6Al-4V Alloy Produced by Hot Pressing of Ti-6Al-4V Swarf

  • F. Yang
  • Z. Q. Pi
  • Q. Y. Zhao
  • S. Raynova
  • Q. Liu
  • K. Sharp
  • M. Brandt
  • L. Bolzoni
  • M. Qian
Effective Production and Recycling of Powder Materials


Ti-6Al-4V (Ti-64) swarf is produced every day in commercial operations but its direct use for the fabrication of strong and ductile Ti-6Al-4V alloy is seldom reported. This study consolidated as-received Ti-64 swarf into near fully dense Ti-6Al-4V alloy by hot pressing. The microstructures and tensile mechanical properties of the hot-pressed Ti-64 alloy and the effect of subsequent solution treatment and ageing (STA) were studied. The hot-pressed Ti-64 achieved tensile yield strength (TYS) of 928–998 MPa, ultimate tensile strength (UTS) of 1076–1139 MPa and strain to fracture of 6.92–7.80%. The STA increased the TYS to 1103–1143 MPa and UTS to 1188–1223 MPa, accompanied by a decline in the strain to fracture to 5.32–6.48%. These tensile property data suggest that it is possible to directly consolidate Ti-6Al-4V swarf into a strong and ductile Ti-6Al-4V alloy by hot pressing for a variety of potential applications.



The authors from the University of Waikato gratefully acknowledge the funding support from the Strategic Investment Fund of the University of Waikato, New Zealand (Grant No. 2018-SIF-106309), and Ministry of Business, Innovation and Employment (MBIE), New Zealand (Contract no. UOWX1402) and the Australian team thanks the Australian Defence Science and Technology Group (DSTG) for funding this research.


  1. 1.
    C.N. Elias, J.H.C. Lima, R. Valiev, and M.A. Meyers, JOM 60, 46 (2008).CrossRefGoogle Scholar
  2. 2.
    J. Tong, C.R. Bowen, J. Persson, and A. Plummer, Mater. Sci. Technol. 33, 138 (2017).CrossRefGoogle Scholar
  3. 3.
    A.T. Sidambe, Materials 7, 8168 (2014).CrossRefGoogle Scholar
  4. 4.
    F.H. Froes, Adv. Mater. Process. 170, 16 (2012).Google Scholar
  5. 5.
    D.T. McDonald, E.W. Lui, S. Palanisamy, M.S. Dargusch, and K. Xia, Metall. Mater. Trans. A 45, 4089 (2014).CrossRefGoogle Scholar
  6. 6.
    E.W. Lui, S. Palanisamy, M.S. Dargusch, and K. Xia, J. Mater. Process. Technol. 238, 297 (2016).CrossRefGoogle Scholar
  7. 7.
    F. Yang, S. Raynova, A. Singh, Q. Zhao, C. Romero, and L. Bolzoni, JOM 70, 632 (2018).CrossRefGoogle Scholar
  8. 8.
    F. Yang and B. Gabbitas, J. Alloys Compd. 695, 1455 (2017).CrossRefGoogle Scholar
  9. 9.
    F. Yang, B. Gabbitas, H. Lu, A. Singh, and C. Wang, In TMS 2014: 143rd Annual Meeting & Exhibition (Springer, Cham, 2014), p. 589.Google Scholar
  10. 10.
    A.N. Kalinyuk, N.P. Trigub, V.N. Zamkov, O.M. Ivasishin, P.E. Markovsky, R.V. Teliovich, and S.L. Semiatin, Mater. Sci. Eng. A 346, 178 (2003).CrossRefGoogle Scholar

Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  1. 1.Waikato Centre for Advanced Materials, School of EngineeringUniversity of WaikatoHamiltonNew Zealand
  2. 2.Defence Science and Technology OrganisationFishermans BendAustralia
  3. 3.Centre for Additive Manufacturing, School of EngineeringRMIT UniversityMelbourneAustralia

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