Effects of Y2O3 nanoparticles on the high-temperature oxidation behavior of IN738LC manufactured by laser powder bed fusion

Chuan Guo; Zhengrong Yu; Chang Liu; Xinggang Li; Qiang Zhu; Mark Ward

doi:10.1016/j.corsci.2020.108715

Effects of Y₂O₃ nanoparticles on the high-temperature oxidation behavior of IN738LC manufactured by laser powder bed fusion

Chuan Guo, Zhengrong Yu, Chang Liu, Xinggang Li, Qiang Zhu, Mark Ward

Metallurgy and Materials

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

223 Downloads (Pure)

Abstract

Oxidation tests at 1095 °C were performed on cubes of IN738LC doped with Y₂O₃ nanoparticles processed by laser powder bed fusion (LPBF). Adding Y₂O₃ nanoparticles led to grain coarsening and the formation of Y₄Al₂O₉, both of which were expected to lead to reduced corrosion resistance in this alloy through a change from an Al-type oxide scale to Cr-type. However, 0.05 wt% Y₂O₃ addition was found to nonetheless be beneficial for corrosion resistance. Results and mechanisms for this were discussed and further work was recommended, in particular for the grain coarsening.

Original language	English
Article number	108715
Number of pages	17
Journal	Corrosion Science
Volume	171
Early online date	5 May 2020
DOIs	https://doi.org/10.1016/j.corsci.2020.108715
Publication status	Published - 15 Jul 2020

Keywords

IN738LC
additive manufacturing
grain growth
high-temperature oxidation
laser powder bed fusion
nanoparticles
nickel-based superalloy
oxidation
yttria

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Cite this

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title = "Effects of Y2O3 nanoparticles on the high-temperature oxidation behavior of IN738LC manufactured by laser powder bed fusion",

abstract = "Oxidation tests at 1095 °C were performed on cubes of IN738LC doped with Y2O3 nanoparticles processed by laser powder bed fusion (LPBF). Adding Y2O3 nanoparticles led to grain coarsening and the formation of Y4Al2O9, both of which were expected to lead to reduced corrosion resistance in this alloy through a change from an Al-type oxide scale to Cr-type. However, 0.05 wt% Y2O3 addition was found to nonetheless be beneficial for corrosion resistance. Results and mechanisms for this were discussed and further work was recommended, in particular for the grain coarsening.",

keywords = "IN738LC, additive manufacturing, grain growth, high-temperature oxidation, laser powder bed fusion, nanoparticles, nickel-based superalloy, oxidation, yttria",

author = "Chuan Guo and Zhengrong Yu and Chang Liu and Xinggang Li and Qiang Zhu and Mark Ward",

year = "2020",

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AU - Guo, Chuan

AU - Yu, Zhengrong

AU - Liu, Chang

AU - Li, Xinggang

AU - Zhu, Qiang

AU - Ward, Mark

PY - 2020/7/15

Y1 - 2020/7/15

N2 - Oxidation tests at 1095 °C were performed on cubes of IN738LC doped with Y2O3 nanoparticles processed by laser powder bed fusion (LPBF). Adding Y2O3 nanoparticles led to grain coarsening and the formation of Y4Al2O9, both of which were expected to lead to reduced corrosion resistance in this alloy through a change from an Al-type oxide scale to Cr-type. However, 0.05 wt% Y2O3 addition was found to nonetheless be beneficial for corrosion resistance. Results and mechanisms for this were discussed and further work was recommended, in particular for the grain coarsening.

AB - Oxidation tests at 1095 °C were performed on cubes of IN738LC doped with Y2O3 nanoparticles processed by laser powder bed fusion (LPBF). Adding Y2O3 nanoparticles led to grain coarsening and the formation of Y4Al2O9, both of which were expected to lead to reduced corrosion resistance in this alloy through a change from an Al-type oxide scale to Cr-type. However, 0.05 wt% Y2O3 addition was found to nonetheless be beneficial for corrosion resistance. Results and mechanisms for this were discussed and further work was recommended, in particular for the grain coarsening.

KW - IN738LC

KW - additive manufacturing

KW - grain growth

KW - high-temperature oxidation

KW - laser powder bed fusion

KW - nanoparticles

KW - nickel-based superalloy

KW - oxidation

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