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Microstructural Investigation and Impact Testing of Additive Manufactured TI-6AL-4V

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Characterization of Minerals, Metals, and Materials 2017

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

Abstract

The microstructure and mechanical response of additive manufactured Ti64 under compression and tension has been investigated. Quasi-static and dynamic experiments were conducted on electron beam powder bed Arcam A1 (EBM) and blown powder laser Optomec LENS MR-7 (LMD) additive manufactured specimens. Hot isostatic pressing (HIP) was conducted on both of the additive manufactured specimens and results were compared with as-received specimens. Digital image correlation (DIC) was utilized to observe the in situ development of deformation fields during tensile loading. Optical microscopy was conducted on pristine and deformed specimens to examine the microstructure of the specimens. HIP treatment reduced the porosity by ~90% with a concomitant increase in hardness by 40%. The results from tensile experiments show that additive manufactured Ti64 display a higher values for the yield stress, hardness, and ultimate tensile strength than conventionally manufactured Ti64. Under quasi-static compression, it was observed that EBM specimens exhibit a higher yield strength and ultimate tensile strength than LMD specimens.

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Acknowledgements

The authors would like to thank Thomas d’Ews Thomson assisting considerably in the manufacturing of specimens in a timely manner and David Sharp for assisting with sample metallographic preparation. Peter Nicholson is thanked for his assistance in performing the HIP treatment. Pat Noland is also thanked for his assistance in conducting the experiments.

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Authors and Affiliations

  1. School of Engineering and Information Technology, UNSW Australia, Australian Defence Force Academy, Canberra, ACT, 2600, Australia

    D. C. Austin, M. A. Bevan, A. D. Brown, A. A. H. Ameri, P. J. Hazell & J. P. Escobedo

  2. Commonwealth Scientific and Industrial Research Organisation, Clayton, VIC, 3168, Australia

    D. East

  3. School of Materials Science, UNSW Australia, Sydney, NSW, 2052, Australia

    A. Chen & S. L. I. Chan

  4. Microscopy and Microanalysis Facility (MMF), John de Laeter Centre (JdLC), Curtin University, Perth, WA, 6102, Australia

    M. Z. Quadir

Authors
  1. D. C. Austin
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  2. M. A. Bevan
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  3. D. East
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  4. A. D. Brown
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  5. A. A. H. Ameri
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  6. P. J. Hazell
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  7. A. Chen
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  8. S. L. I. Chan
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  9. M. Z. Quadir
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  10. J. P. Escobedo
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Corresponding author

Correspondence to J. P. Escobedo .

Editor information

Editors and Affiliations

  1. Al Isra University , Amman, Jordan

    Shadia Ikhmayies

  2. Michigan Technological University, Houghton, Michigan, USA

    Bowen Li

  3. Los Alamos National Laboratory, Los Alamos, New Mexico, USA

    John S. Carpenter

  4. Canmet Materials , Hamilton, Ontario, Canada

    JIan Li

  5. Michigan Technological University, Houghton, Michigan, USA

    Jiann-Yang Hwang

  6. Military Institute of Engineering, IME, Rio De Janeiro, Brazil

    Sergio Neves Monteiro

  7. Poltecnico di Torino , Turin, Italy

    Donato Firrao

  8. ArcelorMittal Global R&D, East Chicago, Indiana, USA

    Mingming Zhang

  9. Central South University , Changsha, China

    Zhiwei Peng

  10. University of New South Wales , Canberra, Australia

    Juan P. Escobedo-Diaz

  11. Chongqing University , Chongqing, China

    Chenguang Bai

  12. Middle East Technical University , Ankara, Turkey

    Yunus Eren Kalay

  13. Naval Research Laboratory , Washington, District of Columbia, USA

    Ramasis Goswami

  14. Korea Railroad Research Institute, Uiwang, Korea (Republic of)

    Jeongguk Kim

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© 2017 The Minerals, Metals & Materials Society

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Austin, D.C. et al. (2017). Microstructural Investigation and Impact Testing of Additive Manufactured TI-6AL-4V . In: Ikhmayies, S., et al. Characterization of Minerals, Metals, and Materials 2017. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-51382-9_21

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