An Effective Strengthening Strategy of Nano Carbide Precipitation and Cellular Microstructure Refinement in a Superalloy Fabricated by Selective Laser Melting Process
An effective strategy to strengthen a superalloy processed by selective laser melting (SLM) is proposed. The aim is to increase the yield strength of Inconel 718 fabricated by SLM to beyond 1400 MPa, which has never been achieved before. In this study, various NbC additions (0.0%, 0.5%, 1.0%, and 5....
Guardado en:
| Autores principales: | , , , , , , , |
|---|---|
| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
|
| Materias: | |
| Acceso en línea: | https://doaj.org/article/90db33ef8c6440188eb6e94b66b1f65e |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| id |
oai:doaj.org-article:90db33ef8c6440188eb6e94b66b1f65e |
|---|---|
| record_format |
dspace |
| spelling |
oai:doaj.org-article:90db33ef8c6440188eb6e94b66b1f65e2021-11-25T18:21:14ZAn Effective Strengthening Strategy of Nano Carbide Precipitation and Cellular Microstructure Refinement in a Superalloy Fabricated by Selective Laser Melting Process10.3390/met111116912075-4701https://doaj.org/article/90db33ef8c6440188eb6e94b66b1f65e2021-10-01T00:00:00Zhttps://www.mdpi.com/2075-4701/11/11/1691https://doaj.org/toc/2075-4701An effective strategy to strengthen a superalloy processed by selective laser melting (SLM) is proposed. The aim is to increase the yield strength of Inconel 718 fabricated by SLM to beyond 1400 MPa, which has never been achieved before. In this study, various NbC additions (0.0%, 0.5%, 1.0%, and 5.0% by weight) were added in the powder bed of Inconel 718, and two types of post-SLM heat treatments were investigated, i.e., solution heat treated plus aging (STA) and direct aging (DA). With NbC addition, smaller depth of melt pool and finer dendritic cells were obtained. Both STA and DA promoted the precipitations of γ′ and γ″. STA eliminated the cellular dendrites and induced grain growth while DA retained the as-built cellular dendrites, grain size, and nano-carbide from NbC addition, rendering a significant 326.2 MPa increase in yield strength. In this work, 0.5% NbC addition exhibited a record-high yield strength of 1461 MPa and ultimate tensile strength of 1575 MPa for Inconel 718 processed by laser manufacturing process according to literature data to-date.Kai-Chun ChangMeng-Yun LeeTzu-Hou HsuYao-Jen ChangKai-Chi LoHyoung Seop KimKuo-Kuang JenAn-Chou YehMDPI AGarticleselective laser meltingsuperalloycellular structuretensile propertiesMining engineering. MetallurgyTN1-997ENMetals, Vol 11, Iss 1691, p 1691 (2021) |
| institution |
DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
selective laser melting superalloy cellular structure tensile properties Mining engineering. Metallurgy TN1-997 |
| spellingShingle |
selective laser melting superalloy cellular structure tensile properties Mining engineering. Metallurgy TN1-997 Kai-Chun Chang Meng-Yun Lee Tzu-Hou Hsu Yao-Jen Chang Kai-Chi Lo Hyoung Seop Kim Kuo-Kuang Jen An-Chou Yeh An Effective Strengthening Strategy of Nano Carbide Precipitation and Cellular Microstructure Refinement in a Superalloy Fabricated by Selective Laser Melting Process |
| description |
An effective strategy to strengthen a superalloy processed by selective laser melting (SLM) is proposed. The aim is to increase the yield strength of Inconel 718 fabricated by SLM to beyond 1400 MPa, which has never been achieved before. In this study, various NbC additions (0.0%, 0.5%, 1.0%, and 5.0% by weight) were added in the powder bed of Inconel 718, and two types of post-SLM heat treatments were investigated, i.e., solution heat treated plus aging (STA) and direct aging (DA). With NbC addition, smaller depth of melt pool and finer dendritic cells were obtained. Both STA and DA promoted the precipitations of γ′ and γ″. STA eliminated the cellular dendrites and induced grain growth while DA retained the as-built cellular dendrites, grain size, and nano-carbide from NbC addition, rendering a significant 326.2 MPa increase in yield strength. In this work, 0.5% NbC addition exhibited a record-high yield strength of 1461 MPa and ultimate tensile strength of 1575 MPa for Inconel 718 processed by laser manufacturing process according to literature data to-date. |
| format |
article |
| author |
Kai-Chun Chang Meng-Yun Lee Tzu-Hou Hsu Yao-Jen Chang Kai-Chi Lo Hyoung Seop Kim Kuo-Kuang Jen An-Chou Yeh |
| author_facet |
Kai-Chun Chang Meng-Yun Lee Tzu-Hou Hsu Yao-Jen Chang Kai-Chi Lo Hyoung Seop Kim Kuo-Kuang Jen An-Chou Yeh |
| author_sort |
Kai-Chun Chang |
| title |
An Effective Strengthening Strategy of Nano Carbide Precipitation and Cellular Microstructure Refinement in a Superalloy Fabricated by Selective Laser Melting Process |
| title_short |
An Effective Strengthening Strategy of Nano Carbide Precipitation and Cellular Microstructure Refinement in a Superalloy Fabricated by Selective Laser Melting Process |
| title_full |
An Effective Strengthening Strategy of Nano Carbide Precipitation and Cellular Microstructure Refinement in a Superalloy Fabricated by Selective Laser Melting Process |
| title_fullStr |
An Effective Strengthening Strategy of Nano Carbide Precipitation and Cellular Microstructure Refinement in a Superalloy Fabricated by Selective Laser Melting Process |
| title_full_unstemmed |
An Effective Strengthening Strategy of Nano Carbide Precipitation and Cellular Microstructure Refinement in a Superalloy Fabricated by Selective Laser Melting Process |
| title_sort |
effective strengthening strategy of nano carbide precipitation and cellular microstructure refinement in a superalloy fabricated by selective laser melting process |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/90db33ef8c6440188eb6e94b66b1f65e |
| work_keys_str_mv |
AT kaichunchang aneffectivestrengtheningstrategyofnanocarbideprecipitationandcellularmicrostructurerefinementinasuperalloyfabricatedbyselectivelasermeltingprocess AT mengyunlee aneffectivestrengtheningstrategyofnanocarbideprecipitationandcellularmicrostructurerefinementinasuperalloyfabricatedbyselectivelasermeltingprocess AT tzuhouhsu aneffectivestrengtheningstrategyofnanocarbideprecipitationandcellularmicrostructurerefinementinasuperalloyfabricatedbyselectivelasermeltingprocess AT yaojenchang aneffectivestrengtheningstrategyofnanocarbideprecipitationandcellularmicrostructurerefinementinasuperalloyfabricatedbyselectivelasermeltingprocess AT kaichilo aneffectivestrengtheningstrategyofnanocarbideprecipitationandcellularmicrostructurerefinementinasuperalloyfabricatedbyselectivelasermeltingprocess AT hyoungseopkim aneffectivestrengtheningstrategyofnanocarbideprecipitationandcellularmicrostructurerefinementinasuperalloyfabricatedbyselectivelasermeltingprocess AT kuokuangjen aneffectivestrengtheningstrategyofnanocarbideprecipitationandcellularmicrostructurerefinementinasuperalloyfabricatedbyselectivelasermeltingprocess AT anchouyeh aneffectivestrengtheningstrategyofnanocarbideprecipitationandcellularmicrostructurerefinementinasuperalloyfabricatedbyselectivelasermeltingprocess AT kaichunchang effectivestrengtheningstrategyofnanocarbideprecipitationandcellularmicrostructurerefinementinasuperalloyfabricatedbyselectivelasermeltingprocess AT mengyunlee effectivestrengtheningstrategyofnanocarbideprecipitationandcellularmicrostructurerefinementinasuperalloyfabricatedbyselectivelasermeltingprocess AT tzuhouhsu effectivestrengtheningstrategyofnanocarbideprecipitationandcellularmicrostructurerefinementinasuperalloyfabricatedbyselectivelasermeltingprocess AT yaojenchang effectivestrengtheningstrategyofnanocarbideprecipitationandcellularmicrostructurerefinementinasuperalloyfabricatedbyselectivelasermeltingprocess AT kaichilo effectivestrengtheningstrategyofnanocarbideprecipitationandcellularmicrostructurerefinementinasuperalloyfabricatedbyselectivelasermeltingprocess AT hyoungseopkim effectivestrengtheningstrategyofnanocarbideprecipitationandcellularmicrostructurerefinementinasuperalloyfabricatedbyselectivelasermeltingprocess AT kuokuangjen effectivestrengtheningstrategyofnanocarbideprecipitationandcellularmicrostructurerefinementinasuperalloyfabricatedbyselectivelasermeltingprocess AT anchouyeh effectivestrengtheningstrategyofnanocarbideprecipitationandcellularmicrostructurerefinementinasuperalloyfabricatedbyselectivelasermeltingprocess |
| _version_ |
1718411271330594816 |