Y2O3 nanoparticles decorated IN738LC superalloy manufactured by laser powder bed fusion: Cracking inhibition, microstructures and mechanical properties

Chuan Guo; Zhengrong Yu; Xiaogang Hu; Gan Li; Fan Zhou; Zhen Xu; Shuang Han; Yang Zhou; R. Mark Ward; Qiang Zhu

doi:10.1016/j.compositesb.2021.109555

Y₂O₃ nanoparticles decorated IN738LC superalloy manufactured by laser powder bed fusion: Cracking inhibition, microstructures and mechanical properties

Chuan Guo, Zhengrong Yu, Xiaogang Hu, Gan Li, Fan Zhou, Zhen Xu, Shuang Han, Yang Zhou, R. Mark Ward^*, Qiang Zhu^*

^*Corresponding author for this work

Metallurgy and Materials

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

14 Citations (Scopus)

Abstract

In-situ Y₂O₃ nanoparticles decorated Inconel 738 LC composite by powder mixture is fabricated using laser powder bed fusion with different scan speeds and laser powers. The process window is significantly enlarged with the addition of 0.05 wt% Y₂O₃ by removing the cracks in the as-printed parts. Well-dispersed Y₄Al₂O₉ particles are formed during the reaction between the mixed powders and the laser beam. Obvious enrichment of Zr in the Y₄Al₂O₉ particles by substitution for the yttrium is observed, which effectively eliminates the segregation of Zr along the grain boundaries. In this case, the cracks are mitigated since the formation of liquid film is correspondingly hindered at the last stage of solidification. In addition, the gains are coarsened to nearly double the size with the incorporation of Y₂O₃ nanoparticles before and after heat treatment. As a result, the Y₂O₃-inoculated Inconel 738 LC exhibits an improved strength at 850 °C.

Original language	English
Article number	109555
Number of pages	12
Journal	Composites Part B: Engineering
Volume	230
Early online date	6 Dec 2021
DOIs	https://doi.org/10.1016/j.compositesb.2021.109555
Publication status	Published - 1 Feb 2022

Bibliographical note

Funding Information:
National Natural Science Foundation of China (No. 91860131), National Key Research and Development Program of China (No. 2017YFB0702901), Shenzhen Science and Technology Innovation Commission (ZDSYS201703031748354, No. JCYJ20170817111811303, No. KQTD20170328154443162), and dual-education Ph.D. project (No.FEFE/GAS1792) financially supported this research.

Publisher Copyright:
© 2021 Elsevier Ltd

Keywords

Cracking
Laser powder bed fusion
Mechanical properties
Metal-matrix composites
Microstructure

ASJC Scopus subject areas

Ceramics and Composites
Mechanics of Materials
Mechanical Engineering
Industrial and Manufacturing Engineering

Access to Document

10.1016/j.compositesb.2021.109555Licence: None: All rights reserved

Cite this

@article{ae8e2e2fb2d34a52a15c4dde0a83f984,

title = "Y2O3 nanoparticles decorated IN738LC superalloy manufactured by laser powder bed fusion: Cracking inhibition, microstructures and mechanical properties",

abstract = "In-situ Y2O3 nanoparticles decorated Inconel 738 LC composite by powder mixture is fabricated using laser powder bed fusion with different scan speeds and laser powers. The process window is significantly enlarged with the addition of 0.05 wt% Y2O3 by removing the cracks in the as-printed parts. Well-dispersed Y4Al2O9 particles are formed during the reaction between the mixed powders and the laser beam. Obvious enrichment of Zr in the Y4Al2O9 particles by substitution for the yttrium is observed, which effectively eliminates the segregation of Zr along the grain boundaries. In this case, the cracks are mitigated since the formation of liquid film is correspondingly hindered at the last stage of solidification. In addition, the gains are coarsened to nearly double the size with the incorporation of Y2O3 nanoparticles before and after heat treatment. As a result, the Y2O3-inoculated Inconel 738 LC exhibits an improved strength at 850 °C.",

keywords = "Cracking, Laser powder bed fusion, Mechanical properties, Metal-matrix composites, Microstructure",

author = "Chuan Guo and Zhengrong Yu and Xiaogang Hu and Gan Li and Fan Zhou and Zhen Xu and Shuang Han and Yang Zhou and Ward, {R. Mark} and Qiang Zhu",

note = "Funding Information: National Natural Science Foundation of China (No. 91860131), National Key Research and Development Program of China (No. 2017YFB0702901), Shenzhen Science and Technology Innovation Commission (ZDSYS201703031748354, No. JCYJ20170817111811303, No. KQTD20170328154443162), and dual-education Ph.D. project (No.FEFE/GAS1792) financially supported this research. Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

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doi = "10.1016/j.compositesb.2021.109555",

language = "English",

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TY - JOUR

T1 - Y2O3 nanoparticles decorated IN738LC superalloy manufactured by laser powder bed fusion

T2 - Cracking inhibition, microstructures and mechanical properties

AU - Guo, Chuan

AU - Yu, Zhengrong

AU - Hu, Xiaogang

AU - Li, Gan

AU - Zhou, Fan

AU - Xu, Zhen

AU - Han, Shuang

AU - Zhou, Yang

AU - Ward, R. Mark

AU - Zhu, Qiang

N1 - Funding Information: National Natural Science Foundation of China (No. 91860131), National Key Research and Development Program of China (No. 2017YFB0702901), Shenzhen Science and Technology Innovation Commission (ZDSYS201703031748354, No. JCYJ20170817111811303, No. KQTD20170328154443162), and dual-education Ph.D. project (No.FEFE/GAS1792) financially supported this research. Publisher Copyright: © 2021 Elsevier Ltd

PY - 2022/2/1

Y1 - 2022/2/1

N2 - In-situ Y2O3 nanoparticles decorated Inconel 738 LC composite by powder mixture is fabricated using laser powder bed fusion with different scan speeds and laser powers. The process window is significantly enlarged with the addition of 0.05 wt% Y2O3 by removing the cracks in the as-printed parts. Well-dispersed Y4Al2O9 particles are formed during the reaction between the mixed powders and the laser beam. Obvious enrichment of Zr in the Y4Al2O9 particles by substitution for the yttrium is observed, which effectively eliminates the segregation of Zr along the grain boundaries. In this case, the cracks are mitigated since the formation of liquid film is correspondingly hindered at the last stage of solidification. In addition, the gains are coarsened to nearly double the size with the incorporation of Y2O3 nanoparticles before and after heat treatment. As a result, the Y2O3-inoculated Inconel 738 LC exhibits an improved strength at 850 °C.

AB - In-situ Y2O3 nanoparticles decorated Inconel 738 LC composite by powder mixture is fabricated using laser powder bed fusion with different scan speeds and laser powers. The process window is significantly enlarged with the addition of 0.05 wt% Y2O3 by removing the cracks in the as-printed parts. Well-dispersed Y4Al2O9 particles are formed during the reaction between the mixed powders and the laser beam. Obvious enrichment of Zr in the Y4Al2O9 particles by substitution for the yttrium is observed, which effectively eliminates the segregation of Zr along the grain boundaries. In this case, the cracks are mitigated since the formation of liquid film is correspondingly hindered at the last stage of solidification. In addition, the gains are coarsened to nearly double the size with the incorporation of Y2O3 nanoparticles before and after heat treatment. As a result, the Y2O3-inoculated Inconel 738 LC exhibits an improved strength at 850 °C.

KW - Cracking

KW - Laser powder bed fusion

KW - Mechanical properties

KW - Metal-matrix composites

KW - Microstructure

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