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

D. C. Austin, M. A. Bevan, D. East, A. D. Brown, A. A.H. Ameri, P. J. Hazell, A. Chen, S. L.I. Chan, M. Z. Quadir, J. P. Escobedo

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

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.

Original languageEnglish
Title of host publicationCharacterization of Minerals, Metals, and Materials 2017
EditorsJian Li, Sergio Neves Monteiro, Juan P. Escobedo-Diaz, Jeongguk Kim, Ramasis Goswami, Jiann-Yang Hwang, Yunus Eren Kalay, Bowen Li, Mingming Zhang, Shadia Ikhmayies, John S. Carpenter, Zhiwei Peng, Donato Firrao, Chenguang Bai
PublisherSpringer International Publishing
Pages191-199
Number of pages9
ISBN (Print)9783319513812
DOIs
StatePublished - 2017
EventInternational Symposium on Characterization of Minerals, Metals, and Materials, 2017 - San Diego, United States
Duration: 26 Feb 20172 Mar 2017

Publication series

NameMinerals, Metals and Materials Series
VolumePart F7
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696

Conference

ConferenceInternational Symposium on Characterization of Minerals, Metals, and Materials, 2017
Country/TerritoryUnited States
CitySan Diego
Period26/02/172/03/17

Keywords

  • Additive manufacture
  • Compression
  • Porosity
  • Tension
  • Titanium

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