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Laser powder bed fusion of WC-reinforced Hastelloy-X composite: microstructure and mechanical properties

Quanquan Han, Yuchen Gu, Heng Gu, Yingyue Yin, Jun Song, Zhenhua Zhang, Shwe Soe

Journal of Materials Science, Volume: 56, Issue: 2, Pages: 1768 - 1782

Swansea University Author: Yuchen Gu

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DOI (Published version): 10.1007/s10853-020-05327-6

Abstract

Nickel-based superalloys such as Hastelloy X (HX) are widely used in gas turbine engines for their exceptional oxidation resistance and high-temperature strength. The addition of ceramic reinforcement further enhances these superalloys’ mechanical performance and high-temperature properties. For thi...

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Published in: Journal of Materials Science
ISSN: 0022-2461 1573-4803
Published: Springer Science and Business Media LLC 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa55265
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first_indexed 2020-09-28T09:49:21Z
last_indexed 2020-11-11T04:10:02Z
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spelling 2020-11-10T13:41:14.3231768 v2 55265 2020-09-28 Laser powder bed fusion of WC-reinforced Hastelloy-X composite: microstructure and mechanical properties 615b64048381eea559251d5953bb3cd6 Yuchen Gu Yuchen Gu true false 2020-09-28 MTLS Nickel-based superalloys such as Hastelloy X (HX) are widely used in gas turbine engines for their exceptional oxidation resistance and high-temperature strength. The addition of ceramic reinforcement further enhances these superalloys’ mechanical performance and high-temperature properties. For this reason, this paper investigates the microstructure and mechanical property of laser powder bed fusion (LPBF) additively manufactured HX–1 wt% WC (tungsten carbide) composite specimens. The results demonstrate that the LPBF-fabricated composite was observed to have several pores and microcracks, whilst only pores were detected in the as-fabricated pure HX. Compared to the fabricated pure HX, the tensile yield strength of such HX composite parts was increased by 13% without undue sacrifices to ductility, suggesting that the very limited number of microcracks were not sufficient to degrade the mechanical performance. The significantly increased dislocations were considered to be the primary contributor for the mechanical performance enhancement in the LPBF-fabricated composite material. The findings offer a promising pathway to employ LPBF process to fabricate advanced microcrack-free composites with high-strength through a careful selection of ceramic reinforcement materials. Journal Article Journal of Materials Science 56 2 1768 1782 Springer Science and Business Media LLC 0022-2461 1573-4803 1 1 2021 2021-01-01 10.1007/s10853-020-05327-6 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2020-11-10T13:41:14.3231768 2020-09-28T10:48:07.1347260 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Quanquan Han 1 Yuchen Gu 2 Heng Gu 3 Yingyue Yin 4 Jun Song 5 Zhenhua Zhang 6 Shwe Soe 7 55265__18630__f3fe2255d522449aaf34c9942b24b551.pdf 55265.pdf 2020-11-10T13:39:49.0290516 Output 1921580 application/pdf Accepted Manuscript true 2021-09-21T00:00:00.0000000 true eng
title Laser powder bed fusion of WC-reinforced Hastelloy-X composite: microstructure and mechanical properties
spellingShingle Laser powder bed fusion of WC-reinforced Hastelloy-X composite: microstructure and mechanical properties
Yuchen Gu
title_short Laser powder bed fusion of WC-reinforced Hastelloy-X composite: microstructure and mechanical properties
title_full Laser powder bed fusion of WC-reinforced Hastelloy-X composite: microstructure and mechanical properties
title_fullStr Laser powder bed fusion of WC-reinforced Hastelloy-X composite: microstructure and mechanical properties
title_full_unstemmed Laser powder bed fusion of WC-reinforced Hastelloy-X composite: microstructure and mechanical properties
title_sort Laser powder bed fusion of WC-reinforced Hastelloy-X composite: microstructure and mechanical properties
author_id_str_mv 615b64048381eea559251d5953bb3cd6
author_id_fullname_str_mv 615b64048381eea559251d5953bb3cd6_***_Yuchen Gu
author Yuchen Gu
author2 Quanquan Han
Yuchen Gu
Heng Gu
Yingyue Yin
Jun Song
Zhenhua Zhang
Shwe Soe
format Journal article
container_title Journal of Materials Science
container_volume 56
container_issue 2
container_start_page 1768
publishDate 2021
institution Swansea University
issn 0022-2461
1573-4803
doi_str_mv 10.1007/s10853-020-05327-6
publisher Springer Science and Business Media LLC
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
document_store_str 1
active_str 0
description Nickel-based superalloys such as Hastelloy X (HX) are widely used in gas turbine engines for their exceptional oxidation resistance and high-temperature strength. The addition of ceramic reinforcement further enhances these superalloys’ mechanical performance and high-temperature properties. For this reason, this paper investigates the microstructure and mechanical property of laser powder bed fusion (LPBF) additively manufactured HX–1 wt% WC (tungsten carbide) composite specimens. The results demonstrate that the LPBF-fabricated composite was observed to have several pores and microcracks, whilst only pores were detected in the as-fabricated pure HX. Compared to the fabricated pure HX, the tensile yield strength of such HX composite parts was increased by 13% without undue sacrifices to ductility, suggesting that the very limited number of microcracks were not sufficient to degrade the mechanical performance. The significantly increased dislocations were considered to be the primary contributor for the mechanical performance enhancement in the LPBF-fabricated composite material. The findings offer a promising pathway to employ LPBF process to fabricate advanced microcrack-free composites with high-strength through a careful selection of ceramic reinforcement materials.
published_date 2021-01-01T04:09:21Z
_version_ 1763753655576559616
score 11.017797

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