Decomposition of the Laves phase in the fusion zone of the Inconel 718/ATI 718Plus® welded joint during isothermal holding at a temperature of 649 °C.
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| Title: | Decomposition of the Laves phase in the fusion zone of the Inconel 718/ATI 718Plus® welded joint during isothermal holding at a temperature of 649 °C. |
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| Authors: | Kruk, Adam1 (AUTHOR), Cempura, Grzegorz1 (AUTHOR) cempura@agh.edu.pl |
| Source: | Materials Characterization. Feb2023, Vol. 196, pN.PAG-N.PAG. 1p. |
| Subjects: | Laves phases (Metallurgy), Isothermal temperature, Inconel, Dendritic crystals, Edge dislocations, Welded joints |
| Abstract: | The results of a microstructural investigation of the Laves phase decomposition during annealing at 649 °C using analytical and high-resolution transmission electron microscopy methods are presented. 3D imaging using the FIB-SEM tomography technique was used to analyze the morphology of the C14 (MgZn 2) Laves particles and to visualize the spatial distribution of its decay products. The research showed that the Laves phase decays while annealing into other phases such as δ-Ni 3 Nb, α-Cr and secondary carbides. The results of the 3D analysis showed the complex morphology of the Laves phase precipitation and the spatial distribution of the precipitated Cr-rich phase particles. The δ phase had plate-like morphology nucleates and grew into the surrounding Laves phase that had a longer annealing time and continued to grow in the γ matrix. A high-resolution analysis of the δ/Laves and δ/γ interphase boundaries was performed. • The IN718/718Plus weld has a dendritic structure with a significant degree of segregation into the interdendritic areas of elements such as C and Nb. • Annealing of the welded joint at a temperature of about 649°C, causes the decomposition Laves phase into other, more thermodynamically stable phases. • The morphology of the Laves phase particles is complex. • Precipitates of Cr-rich particles are nucleated on both the Laves/Gamma interphase surface as well as inside the volume of Laves phase. • The volume fraction of the Cr-rich phase increased from 0.32% for 50 hours to 4.7% for 500 hours of annealing. • The mean equivalent diameter of Cr-rich phase, inside Laves phase increased from 27.7 ± 11.6 nm for 50 h to 104.2 ± 60.6 nm for 500 hours. • Nb-rich secondary carbides was observed in the Laves phase. The decay reaction can be written as Laves → Laves + δ + α-Cr + MC(II) secondary. • A mismatch in the distribution of the crystallographic planes between the δ-phase plate and the Laves phase is compensated by the edge dislocation. • There was a semi-coherent δ/Laves boundary. [ABSTRACT FROM AUTHOR] |
| Copyright of Materials Characterization is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 161362679 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Decomposition of the Laves phase in the fusion zone of the Inconel 718/ATI 718Plus® welded joint during isothermal holding at a temperature of 649 °C. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Kruk%2C+Adam%22">Kruk, Adam</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cempura%2C+Grzegorz%22">Cempura, Grzegorz</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> cempura@agh.edu.pl</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Materials+Characterization%22">Materials Characterization</searchLink>. Feb2023, Vol. 196, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Laves+phases+%28Metallurgy%29%22">Laves phases (Metallurgy)</searchLink><br /><searchLink fieldCode="DE" term="%22Isothermal+temperature%22">Isothermal temperature</searchLink><br /><searchLink fieldCode="DE" term="%22Inconel%22">Inconel</searchLink><br /><searchLink fieldCode="DE" term="%22Dendritic+crystals%22">Dendritic crystals</searchLink><br /><searchLink fieldCode="DE" term="%22Edge+dislocations%22">Edge dislocations</searchLink><br /><searchLink fieldCode="DE" term="%22Welded+joints%22">Welded joints</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The results of a microstructural investigation of the Laves phase decomposition during annealing at 649 °C using analytical and high-resolution transmission electron microscopy methods are presented. 3D imaging using the FIB-SEM tomography technique was used to analyze the morphology of the C14 (MgZn 2) Laves particles and to visualize the spatial distribution of its decay products. The research showed that the Laves phase decays while annealing into other phases such as δ-Ni 3 Nb, α-Cr and secondary carbides. The results of the 3D analysis showed the complex morphology of the Laves phase precipitation and the spatial distribution of the precipitated Cr-rich phase particles. The δ phase had plate-like morphology nucleates and grew into the surrounding Laves phase that had a longer annealing time and continued to grow in the γ matrix. A high-resolution analysis of the δ/Laves and δ/γ interphase boundaries was performed. • The IN718/718Plus weld has a dendritic structure with a significant degree of segregation into the interdendritic areas of elements such as C and Nb. • Annealing of the welded joint at a temperature of about 649°C, causes the decomposition Laves phase into other, more thermodynamically stable phases. • The morphology of the Laves phase particles is complex. • Precipitates of Cr-rich particles are nucleated on both the Laves/Gamma interphase surface as well as inside the volume of Laves phase. • The volume fraction of the Cr-rich phase increased from 0.32% for 50 hours to 4.7% for 500 hours of annealing. • The mean equivalent diameter of Cr-rich phase, inside Laves phase increased from 27.7 ± 11.6 nm for 50 h to 104.2 ± 60.6 nm for 500 hours. • Nb-rich secondary carbides was observed in the Laves phase. The decay reaction can be written as Laves → Laves + δ + α-Cr + MC(II) secondary. • A mismatch in the distribution of the crystallographic planes between the δ-phase plate and the Laves phase is compensated by the edge dislocation. • There was a semi-coherent δ/Laves boundary. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Materials Characterization is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.matchar.2022.112560 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Laves phases (Metallurgy) Type: general – SubjectFull: Isothermal temperature Type: general – SubjectFull: Inconel Type: general – SubjectFull: Dendritic crystals Type: general – SubjectFull: Edge dislocations Type: general – SubjectFull: Welded joints Type: general Titles: – TitleFull: Decomposition of the Laves phase in the fusion zone of the Inconel 718/ATI 718Plus® welded joint during isothermal holding at a temperature of 649 °C. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Kruk, Adam – PersonEntity: Name: NameFull: Cempura, Grzegorz IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 02 Text: Feb2023 Type: published Y: 2023 Identifiers: – Type: issn-print Value: 10445803 Numbering: – Type: volume Value: 196 Titles: – TitleFull: Materials Characterization Type: main |
| ResultId | 1 |
