The application of laser processing as a surface treatment method on oxide dispersion strengthened (ODS) Fe-14Cr ferritic alloys, Fe-14Cr-3W-0.3Ti-xY2O3 (x = 0.3, 0.6, 0.9) (wt%), was examined in this paper. The ODS ferritic alloys with different amount of Y2O3 particles were prepared by mechanical milling and subsequently consolidated by spark plasma sintering (SPS). The effect of surface laser processing on the corrosion behavior was investigated for these ODS alloys with different oxide contents. The corrosion behaviors of SPS consolidated ODS samples with subsequent laser melting/solidification were examined by the means of electrochemical tests and compared with the untreated ODS samples in salt water. Results indicated that for samples without laser treatment, powders are mainly in their elemental state. However, after laser processing, the formation of passive layer and the improvement in the corrosion resistance are noticeable. CALculation of PHAse Diagrams (CALPHAD) calculations were used to identify the equilibrium phases and compared well with the experimental results.
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ASME 2018 International Mechanical Engineering Congress and Exposition
November 9–15, 2018
Pittsburgh, Pennsylvania, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-5212-5
PROCEEDINGS PAPER
Phase Evolution and Corrosion Performance of Laser Processed Oxide Dispersion Strengthened Ferritic Alloys
Ali Hemmasian Ettefagh,
Ali Hemmasian Ettefagh
Louisiana State University, Baton Rouge, LA
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Hao Wen,
Hao Wen
Louisiana State University, Baton Rouge, LA
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Fengyuan Lu,
Fengyuan Lu
Louisiana State University, Baton Rouge, LA
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Shengmin Guo
Shengmin Guo
Louisiana State University, Baton Rouge, LA
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Ali Hemmasian Ettefagh
Louisiana State University, Baton Rouge, LA
Hao Wen
Louisiana State University, Baton Rouge, LA
Fengyuan Lu
Louisiana State University, Baton Rouge, LA
Shengmin Guo
Louisiana State University, Baton Rouge, LA
Paper No:
IMECE2018-86736, V08BT10A058; 5 pages
Published Online:
January 15, 2019
Citation
Ettefagh, AH, Wen, H, Lu, F, & Guo, S. "Phase Evolution and Corrosion Performance of Laser Processed Oxide Dispersion Strengthened Ferritic Alloys." Proceedings of the ASME 2018 International Mechanical Engineering Congress and Exposition. Volume 8B: Heat Transfer and Thermal Engineering. Pittsburgh, Pennsylvania, USA. November 9–15, 2018. V08BT10A058. ASME. https://doi.org/10.1115/IMECE2018-86736
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