The crack growth behavior of Incoloy 800H under fatigue and dwell-fatigue conditions at elevated temperature.
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| Title: | The crack growth behavior of Incoloy 800H under fatigue and dwell-fatigue conditions at elevated temperature. |
|---|---|
| Authors: | Kim, D.1 djkim@andong.ac.kr, Seo, D.2, Tsang, J.2, Yang, W.3, Lee, J.3, Saari, H.4, Seok, C.5 |
| Source: | Journal of Mechanical Science & Technology. Jul2012, Vol. 26 Issue 7, p2023-2027. 5p. |
| Subjects: | Fracture mechanics, Material fatigue, High temperatures, Fatigue crack growth, Mechanical loads, Oxidation, Materials science |
| Abstract: | Fatigue crack growth rate (FCGR) tests with different load ratios and dwell-fatigue crack growth rate (DFCGR) tests with different dwell times were conducted at 750°C for Incoloy 800H. As the load ratio increases from 0.1 to 0.5, the crack growth rate increased and the transition ΔK value from region I to region II (Paris regime) shifted leftward. In DFCGR tests with dwell time of 10 and 30 seconds, the Paris regime started at relatively lower ΔK level and the crack grew much faster than in FCGR tests. However, the crack growth rates between the 10 sec and 30 sec dwell times were relatively similar. The higher crack growth rates in the DFCGR tests compared to FCGR tests was associated with the reduction of the MC precipitates in the vicinity of the advancing crack by the Cr depletion, suggesting the crack propagation in DFCGR conditions was environmentally assisted. The crack growth rate was controlled by trans-granular mode regardless of the dwell time because the dwell time was not enough to cause creep damage. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Mechanical Science & Technology is the property of Springer Nature 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 | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 77684373 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: The crack growth behavior of Incoloy 800H under fatigue and dwell-fatigue conditions at elevated temperature. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Kim%2C+D%2E%22">Kim, D.</searchLink><relatesTo>1</relatesTo><i> djkim@andong.ac.kr</i><br /><searchLink fieldCode="AR" term="%22Seo%2C+D%2E%22">Seo, D.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Tsang%2C+J%2E%22">Tsang, J.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Yang%2C+W%2E%22">Yang, W.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Lee%2C+J%2E%22">Lee, J.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Saari%2C+H%2E%22">Saari, H.</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Seok%2C+C%2E%22">Seok, C.</searchLink><relatesTo>5</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Mechanical+Science+%26+Technology%22">Journal of Mechanical Science & Technology</searchLink>. Jul2012, Vol. 26 Issue 7, p2023-2027. 5p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Fracture+mechanics%22">Fracture mechanics</searchLink><br /><searchLink fieldCode="DE" term="%22Material+fatigue%22">Material fatigue</searchLink><br /><searchLink fieldCode="DE" term="%22High+temperatures%22">High temperatures</searchLink><br /><searchLink fieldCode="DE" term="%22Fatigue+crack+growth%22">Fatigue crack growth</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+loads%22">Mechanical loads</searchLink><br /><searchLink fieldCode="DE" term="%22Oxidation%22">Oxidation</searchLink><br /><searchLink fieldCode="DE" term="%22Materials+science%22">Materials science</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Fatigue crack growth rate (FCGR) tests with different load ratios and dwell-fatigue crack growth rate (DFCGR) tests with different dwell times were conducted at 750°C for Incoloy 800H. As the load ratio increases from 0.1 to 0.5, the crack growth rate increased and the transition ΔK value from region I to region II (Paris regime) shifted leftward. In DFCGR tests with dwell time of 10 and 30 seconds, the Paris regime started at relatively lower ΔK level and the crack grew much faster than in FCGR tests. However, the crack growth rates between the 10 sec and 30 sec dwell times were relatively similar. The higher crack growth rates in the DFCGR tests compared to FCGR tests was associated with the reduction of the MC precipitates in the vicinity of the advancing crack by the Cr depletion, suggesting the crack propagation in DFCGR conditions was environmentally assisted. The crack growth rate was controlled by trans-granular mode regardless of the dwell time because the dwell time was not enough to cause creep damage. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Mechanical Science & Technology is the property of Springer Nature 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: 10.1007/s12206-012-0507-3 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 5 StartPage: 2023 Subjects: – SubjectFull: Fracture mechanics Type: general – SubjectFull: Material fatigue Type: general – SubjectFull: High temperatures Type: general – SubjectFull: Fatigue crack growth Type: general – SubjectFull: Mechanical loads Type: general – SubjectFull: Oxidation Type: general – SubjectFull: Materials science Type: general Titles: – TitleFull: The crack growth behavior of Incoloy 800H under fatigue and dwell-fatigue conditions at elevated temperature. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Kim, D. – PersonEntity: Name: NameFull: Seo, D. – PersonEntity: Name: NameFull: Tsang, J. – PersonEntity: Name: NameFull: Yang, W. – PersonEntity: Name: NameFull: Lee, J. – PersonEntity: Name: NameFull: Saari, H. – PersonEntity: Name: NameFull: Seok, C. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 07 Text: Jul2012 Type: published Y: 2012 Identifiers: – Type: issn-print Value: 1738494X Numbering: – Type: volume Value: 26 – Type: issue Value: 7 Titles: – TitleFull: Journal of Mechanical Science & Technology Type: main |
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