Electron beam surface remelting enhanced corrosion resistance of additively manufactured Ti-6Al-4V as a potential in-situ re-finishing technique
Abstract
This study explores the effect of surface re-finishing on the corrosion behavior of electron beam manufactured (EBM) Ti-G5 (Ti-6Al-4V), including the novel application of an electron beam surface remelting (EBSR) technique. Specifically, the relationship between material surface roughness and corrosion resistance was examined. Surface roughness was tested in the as-printed (AP), mechanically polished (MP), and EBSR states and compared to wrought (WR) counterparts. Electrochemical measurements were performed in chloride-containing media. It was observed that surface roughness, rather than differences in the underlying microstructure, played a more significant role in the general corrosion resistance in the environment explored here. While both MP and EBSR methods reduced surface roughness and enhanced corrosion resistance, mechanical polishing has many known limitations. The EBSR process explored herein demonstrated positive preliminary results. The surface roughness (Ra) of the EBM-AP material was considerably reduced by 82%. Additionally, the measured corrosion current density in 0.6 M NaCl for the EBSR sample is 0.05 µA cm–2, five times less than the value obtained for the EBM-AP specimen (0.26 µA cm–2).
- Authors:
-
- Univ. of British Columbia, Vancouver, BC (Canada)
- Univ. of British Columbia, Vancouver, BC (Canada); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1877147
- Report Number(s):
- SAND2022-8890J
Journal ID: ISSN 2045-2322; 707779
- Grant/Contract Number:
- NA0003525
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Scientific Reports
- Additional Journal Information:
- Journal Volume: 12; Journal Issue: 1; Journal ID: ISSN 2045-2322
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; Engineering; Materials science
Citation Formats
Shahsavari, Mohammadali, Imani, Amin, Setavoraphan, Andaman, Schaller, Rebecca Filardo, and Asselin, Edouard. Electron beam surface remelting enhanced corrosion resistance of additively manufactured Ti-6Al-4V as a potential in-situ re-finishing technique. United States: N. p., 2022.
Web. doi:10.1038/s41598-022-14907-2.
Shahsavari, Mohammadali, Imani, Amin, Setavoraphan, Andaman, Schaller, Rebecca Filardo, & Asselin, Edouard. Electron beam surface remelting enhanced corrosion resistance of additively manufactured Ti-6Al-4V as a potential in-situ re-finishing technique. United States. https://doi.org/10.1038/s41598-022-14907-2
Shahsavari, Mohammadali, Imani, Amin, Setavoraphan, Andaman, Schaller, Rebecca Filardo, and Asselin, Edouard. Fri .
"Electron beam surface remelting enhanced corrosion resistance of additively manufactured Ti-6Al-4V as a potential in-situ re-finishing technique". United States. https://doi.org/10.1038/s41598-022-14907-2. https://www.osti.gov/servlets/purl/1877147.
@article{osti_1877147,
title = {Electron beam surface remelting enhanced corrosion resistance of additively manufactured Ti-6Al-4V as a potential in-situ re-finishing technique},
author = {Shahsavari, Mohammadali and Imani, Amin and Setavoraphan, Andaman and Schaller, Rebecca Filardo and Asselin, Edouard},
abstractNote = {This study explores the effect of surface re-finishing on the corrosion behavior of electron beam manufactured (EBM) Ti-G5 (Ti-6Al-4V), including the novel application of an electron beam surface remelting (EBSR) technique. Specifically, the relationship between material surface roughness and corrosion resistance was examined. Surface roughness was tested in the as-printed (AP), mechanically polished (MP), and EBSR states and compared to wrought (WR) counterparts. Electrochemical measurements were performed in chloride-containing media. It was observed that surface roughness, rather than differences in the underlying microstructure, played a more significant role in the general corrosion resistance in the environment explored here. While both MP and EBSR methods reduced surface roughness and enhanced corrosion resistance, mechanical polishing has many known limitations. The EBSR process explored herein demonstrated positive preliminary results. The surface roughness (Ra) of the EBM-AP material was considerably reduced by 82%. Additionally, the measured corrosion current density in 0.6 M NaCl for the EBSR sample is 0.05 µA cm–2, five times less than the value obtained for the EBM-AP specimen (0.26 µA cm–2).},
doi = {10.1038/s41598-022-14907-2},
journal = {Scientific Reports},
number = 1,
volume = 12,
place = {United States},
year = {Fri Jul 08 00:00:00 EDT 2022},
month = {Fri Jul 08 00:00:00 EDT 2022}
}
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