In-situ hardness evaluation of hard-faced coatings through eddy current NDE.
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| Title: | In-situ hardness evaluation of hard-faced coatings through eddy current NDE. |
|---|---|
| Authors: | Balakrishnan, Sasi1 (AUTHOR) sasib@igcar.gov.in, Das, CR1 (AUTHOR), Thirunavukkarasu, S1 (AUTHOR), Kumar, Anish1 (AUTHOR) |
| Source: | International Journal of Applied Electromagnetics & Mechanics. Jun2026, Vol. 80 Issue 5/6, p174-178. 5p. |
| Subjects: | Eddy current testing, Hardness testing, Plasma arcs, Nickel alloys, Stainless steel, Nondestructive testing, Surface coatings |
| Abstract: | In order to improve galling resistance of nuclear components that are made of AISI type 316 (LN) stainless steel, Plasma Transferred Arc Welding (PTAW) is being followed for hard facing of nickel based alloys. However, the change in welding deposition parameters highly influences the required property of coatings. The quality of coating is assessed widely through chemical composition and hardness in production stage. The assessment on the inner diameter side of smaller diameter tubes due to inaccessibility of those measurements demand for the requirement of a quality control tool. In view of this, Eddy current (EC) non-destructive technique, which is sensitive to change in electrical conductivity and magnetic permeability of the material is utilised. EC phase angle measurement shows good sensitivity to the increase in iron content on the top surface of the coating resulted due to the increase in deposition current. Quadratic relationship between iron content in the coating and measured EC phase angle has been established. Hardness is observed to decrease with increasing iron content in the coating. Well correlated response between measured hardness and phase angle measurement promises a good in-situ tool for hardness evaluation of hard-faced coatings on small diameter tubes. [ABSTRACT FROM AUTHOR] |
| Copyright of International Journal of Applied Electromagnetics & Mechanics is the property of Sage Publications Inc. 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: 193983016 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: In-situ hardness evaluation of hard-faced coatings through eddy current NDE. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Balakrishnan%2C+Sasi%22">Balakrishnan, Sasi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> sasib@igcar.gov.in</i><br /><searchLink fieldCode="AR" term="%22Das%2C+CR%22">Das, CR</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Thirunavukkarasu%2C+S%22">Thirunavukkarasu, S</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kumar%2C+Anish%22">Kumar, Anish</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Applied+Electromagnetics+%26+Mechanics%22">International Journal of Applied Electromagnetics & Mechanics</searchLink>. Jun2026, Vol. 80 Issue 5/6, p174-178. 5p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Eddy+current+testing%22">Eddy current testing</searchLink><br /><searchLink fieldCode="DE" term="%22Hardness+testing%22">Hardness testing</searchLink><br /><searchLink fieldCode="DE" term="%22Plasma+arcs%22">Plasma arcs</searchLink><br /><searchLink fieldCode="DE" term="%22Nickel+alloys%22">Nickel alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Stainless+steel%22">Stainless steel</searchLink><br /><searchLink fieldCode="DE" term="%22Nondestructive+testing%22">Nondestructive testing</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+coatings%22">Surface coatings</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In order to improve galling resistance of nuclear components that are made of AISI type 316 (LN) stainless steel, Plasma Transferred Arc Welding (PTAW) is being followed for hard facing of nickel based alloys. However, the change in welding deposition parameters highly influences the required property of coatings. The quality of coating is assessed widely through chemical composition and hardness in production stage. The assessment on the inner diameter side of smaller diameter tubes due to inaccessibility of those measurements demand for the requirement of a quality control tool. In view of this, Eddy current (EC) non-destructive technique, which is sensitive to change in electrical conductivity and magnetic permeability of the material is utilised. EC phase angle measurement shows good sensitivity to the increase in iron content on the top surface of the coating resulted due to the increase in deposition current. Quadratic relationship between iron content in the coating and measured EC phase angle has been established. Hardness is observed to decrease with increasing iron content in the coating. Well correlated response between measured hardness and phase angle measurement promises a good in-situ tool for hardness evaluation of hard-faced coatings on small diameter tubes. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of International Journal of Applied Electromagnetics & Mechanics is the property of Sage Publications Inc. 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: 10.1177/13835416251346120 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 5 StartPage: 174 Subjects: – SubjectFull: Eddy current testing Type: general – SubjectFull: Hardness testing Type: general – SubjectFull: Plasma arcs Type: general – SubjectFull: Nickel alloys Type: general – SubjectFull: Stainless steel Type: general – SubjectFull: Nondestructive testing Type: general – SubjectFull: Surface coatings Type: general Titles: – TitleFull: In-situ hardness evaluation of hard-faced coatings through eddy current NDE. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Balakrishnan, Sasi – PersonEntity: Name: NameFull: Das, CR – PersonEntity: Name: NameFull: Thirunavukkarasu, S – PersonEntity: Name: NameFull: Kumar, Anish IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 06 Text: Jun2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 13835416 Numbering: – Type: volume Value: 80 – Type: issue Value: 5/6 Titles: – TitleFull: International Journal of Applied Electromagnetics & Mechanics Type: main |
| ResultId | 1 |
