Characterization of Sm-rich phase and properties of hypereutectic Al-Ni alloys modified by Sm.
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| Title: | Characterization of Sm-rich phase and properties of hypereutectic Al-Ni alloys modified by Sm. |
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| Authors: | Mo, Liling1 (AUTHOR), Duan, Shougang1 (AUTHOR), Lin, Mingxian1 (AUTHOR), Chen, Linbo1 (AUTHOR), Du, Jun1 (AUTHOR) tandujun@sina.com |
| Source: | Journal of Alloys & Compounds. Nov2024, Vol. 1005, pN.PAG-N.PAG. 1p. |
| Subjects: | Tensile strength, Thermal conductivity, Thermal expansion, Thermal properties, Alloys, Hypereutectic alloys |
| Abstract: | The impact of Samarium (Sm) addition on hypereutectic Al-Ni alloys was systematically investigated, focusing on microstructural changes and thermal-physical, mechanical properties. The addition of 0.1–0.5 wt% Sm resulted in the refinement of primary Al 3 Ni phases from coarse lath-like structures to small particles, enhancing mechanical properties and reducing thermal expansion coefficients (CTE). Thermal conductivity (TC) improved with 0.1–0.3 wt% Sm addition, but declined at the amount of 0.5 wt%. Excessive Sm addition leads to the formation of a Sm-rich phase, characterized by a two-phase mixed structure of Al 11 (Ni, Sm) 3 surrounded by Al 4 Sm. Sm addition lowered the precipitation temperature of the primary Al 3 Ni phase, inducing significant constitutional undercooling and exhibiting a phase refinement effect. The Al-9Ni-0.3Sm alloy showed excellent performance, with a TC of 211.8 W/(m·K), CTE of 17.3×10−6/K (@25–100 °C), ultimate tensile strength of 169.5 MPa, and elongation of 10.4 %. Optimal addition of Sm improved TC, mechanical properties as well as reduced the CTE in the Al alloy at the same time and showed a good modification effect. [Display omitted] • Sm addition refines the primary and eutectic Al 3 Ni phases in the Al-10Ni alloy. • Adding Sm lowers the initial solidification temperature, inducing constitutional undercooling for phase refinement. • Sm modification enhances both thermal-physical properties and mechanical properties. • A new Sm-rich structure forms at higher Sm content, affecting modification and refinement effects in the Al-10Ni alloy. • The Sm-rich structure is determined as a structure of the inner Al 11 (Sm, Ni) 3 phase wrapped by the outer Al 4 Sm phase. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Alloys & Compounds 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: 179465004 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Characterization of Sm-rich phase and properties of hypereutectic Al-Ni alloys modified by Sm. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Mo%2C+Liling%22">Mo, Liling</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Duan%2C+Shougang%22">Duan, Shougang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lin%2C+Mingxian%22">Lin, Mingxian</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Linbo%22">Chen, Linbo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Du%2C+Jun%22">Du, Jun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> tandujun@sina.com</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Alloys+%26+Compounds%22">Journal of Alloys & Compounds</searchLink>. Nov2024, Vol. 1005, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Tensile+strength%22">Tensile strength</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+conductivity%22">Thermal conductivity</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+expansion%22">Thermal expansion</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+properties%22">Thermal properties</searchLink><br /><searchLink fieldCode="DE" term="%22Alloys%22">Alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Hypereutectic+alloys%22">Hypereutectic alloys</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The impact of Samarium (Sm) addition on hypereutectic Al-Ni alloys was systematically investigated, focusing on microstructural changes and thermal-physical, mechanical properties. The addition of 0.1–0.5 wt% Sm resulted in the refinement of primary Al 3 Ni phases from coarse lath-like structures to small particles, enhancing mechanical properties and reducing thermal expansion coefficients (CTE). Thermal conductivity (TC) improved with 0.1–0.3 wt% Sm addition, but declined at the amount of 0.5 wt%. Excessive Sm addition leads to the formation of a Sm-rich phase, characterized by a two-phase mixed structure of Al 11 (Ni, Sm) 3 surrounded by Al 4 Sm. Sm addition lowered the precipitation temperature of the primary Al 3 Ni phase, inducing significant constitutional undercooling and exhibiting a phase refinement effect. The Al-9Ni-0.3Sm alloy showed excellent performance, with a TC of 211.8 W/(m·K), CTE of 17.3×10−6/K (@25–100 °C), ultimate tensile strength of 169.5 MPa, and elongation of 10.4 %. Optimal addition of Sm improved TC, mechanical properties as well as reduced the CTE in the Al alloy at the same time and showed a good modification effect. [Display omitted] • Sm addition refines the primary and eutectic Al 3 Ni phases in the Al-10Ni alloy. • Adding Sm lowers the initial solidification temperature, inducing constitutional undercooling for phase refinement. • Sm modification enhances both thermal-physical properties and mechanical properties. • A new Sm-rich structure forms at higher Sm content, affecting modification and refinement effects in the Al-10Ni alloy. • The Sm-rich structure is determined as a structure of the inner Al 11 (Sm, Ni) 3 phase wrapped by the outer Al 4 Sm phase. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Alloys & Compounds 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.jallcom.2024.175990 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Tensile strength Type: general – SubjectFull: Thermal conductivity Type: general – SubjectFull: Thermal expansion Type: general – SubjectFull: Thermal properties Type: general – SubjectFull: Alloys Type: general – SubjectFull: Hypereutectic alloys Type: general Titles: – TitleFull: Characterization of Sm-rich phase and properties of hypereutectic Al-Ni alloys modified by Sm. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Mo, Liling – PersonEntity: Name: NameFull: Duan, Shougang – PersonEntity: Name: NameFull: Lin, Mingxian – PersonEntity: Name: NameFull: Chen, Linbo – PersonEntity: Name: NameFull: Du, Jun IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 11 Text: Nov2024 Type: published Y: 2024 Identifiers: – Type: issn-print Value: 09258388 Numbering: – Type: volume Value: 1005 Titles: – TitleFull: Journal of Alloys & Compounds Type: main |
| ResultId | 1 |
