Correlations Between Powder Feedstock Quality, In Situ Porosity Detection, and Fatigue Behavior of Ti-6Al-4V Fabricated by Powder Bed Electron Beam Melting: A Step Towards Qualification

Nandwana, Peeyush; Kirka, Michael M.; Paquit, Vincent C.; Yoder, Sean; Dehoff, Ryan R.

doi:10.1007/s11837-018-3034-6

Title: Correlations Between Powder Feedstock Quality, In Situ Porosity Detection, and Fatigue Behavior of Ti-6Al-4V Fabricated by Powder Bed Electron Beam Melting: A Step Towards Qualification

Journal Article · 30 July 2018 · JOM. Journal of the Minerals, Metals & Materials Society

DOI: https://doi.org/10.1007/s11837-018-3034-6 · OSTI ID:1474677

^[1]; Kirka, Michael M. ^[1]; Paquit, Vincent C. ^[2]; Yoder, Sean ^[3]; Dehoff, Ryan R. ^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division. Manufacturing Demonstration Facility
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Manufacturing Demonstration Facility. Electrical and Electronics Systems Research Division
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Energy and Transportation Science Division; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Mechanical, Aerospace, and Biomedical Engineering

Ti-6Al-4V is the most studied alloy via electron beam melting (EBM) with regards to microstructure and mechanical behavior, but there have been no attempts to correlate in situ porosity detection and fatigue behavior. This is required for widespread adoption of EBM because conventional evaluation is often time-consuming and expensive. This study presents the use of near-infrared imaging to detect and quantify porosity in Ti-6Al-4V builds fabricated from different powder feedstocks and its correlation to their fatigue response. Finally, we report that, for identical processing parameters, the variability in powder feedstock causes variations in porosity and scatter in the respective fatigue response.

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Research Organization:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Advanced Manufacturing Office (EE-5A); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1474677

Journal Information:: JOM. Journal of the Minerals, Metals & Materials Society, Journal Name: JOM. Journal of the Minerals, Metals & Materials Society Journal Issue: 9 Vol. 70; ISSN 1047-4838

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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Fatigue Performance of Additively Manufactured Ti-6Al-4V: Surface Condition vs. Internal Defects Sun, Y. Y.; Lu, S. L.; Gulizia, S. JOM, Vol. 72, Issue 3 https://doi.org/10.1007/s11837-020-04025-7	journal	January 2020
In Operando Monitoring by Analysis of Backscattered Electrons during Electron Beam Melting Arnold, Christopher; Böhm, Jonas; Körner, Carolin Advanced Engineering Materials, Vol. 22, Issue 9 https://doi.org/10.1002/adem.201901102	journal	December 2019
Powder Recycling Effects on the Tensile and Fatigue Behavior of Additively Manufactured Ti-6Al-4V Parts Carrion, Patricio E.; Soltani-Tehrani, Arash; Phan, Nam JOM, Vol. 71, Issue 3 https://doi.org/10.1007/s11837-018-3248-7	journal	November 2018

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Title: Correlations Between Powder Feedstock Quality, In Situ Porosity Detection, and Fatigue Behavior of Ti-6Al-4V Fabricated by Powder Bed Electron Beam Melting: A Step Towards Qualification

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