Investigation on Fracture Behavior of Modified 9Cr-1Mo Steel Base and Welded Joint in As-Weld and Post-Weld Heat-Treated Condition.
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| Title: | Investigation on Fracture Behavior of Modified 9Cr-1Mo Steel Base and Welded Joint in As-Weld and Post-Weld Heat-Treated Condition. |
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| Authors: | Singh, Brajesh Kumar1,2 (AUTHOR), Krishnan, S. A.1,3 (AUTHOR) sakrish@igcar.gov.in, Dutt, B. Shashank3 (AUTHOR), Nikhil, R.3 (AUTHOR), Moitra, A.1,3 (AUTHOR) |
| Source: | Journal of Materials Engineering & Performance. Dec2025, Vol. 34 Issue 24, p30542-30554. 13p. |
| Subjects: | Fracture toughness, Welded joints, Brittle fractures, Ductile fractures, Heat treatment, Temperature effect, Chromium molybdenum steel, Fracture mechanics |
| Abstract: | Fracture resistance behavior of Mod. 9Cr-1Mo steel base and its all-weld metal in as-weld and post-weld heat-treated (PWHT) conditions has been investigated at room temperature, 350, 450 and 550 °C. The fracture resistance behavior and fracture toughness (JIc) of the weld joint have been evaluated as per ASTM E 1820 and ISO 15653. The base metal's fracture toughness decreased with rising temperature from 352 kJm−2 at room temperature to 248 kJm−2 at 550 °C. The as-welded metal exhibited brittle fracture across all test temperatures. Its fracture toughness was significantly low, ranging from 13 to 17 kJm−2. PHWT improved the weld metal's fracture toughness; values ranged from 468 to 256 kJm−2, with the lowest toughness of 256 kJm−2 at 350 °C. The fractography studies reveal ductile dimples in both the base metal and PWHT specimens, and cleavage facets in as-welded specimens with few small dimples. Additionally, a sharp gradient in hardness profile across the weld interface further confirms the brittle nature of the as-weld joint. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Materials Engineering & Performance 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 | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 190298213 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Investigation on Fracture Behavior of Modified 9Cr-1Mo Steel Base and Welded Joint in As-Weld and Post-Weld Heat-Treated Condition. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Singh%2C+Brajesh+Kumar%22">Singh, Brajesh Kumar</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Krishnan%2C+S%2E+A%2E%22">Krishnan, S. A.</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<i> sakrish@igcar.gov.in</i><br /><searchLink fieldCode="AR" term="%22Dutt%2C+B%2E+Shashank%22">Dutt, B. Shashank</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nikhil%2C+R%2E%22">Nikhil, R.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Moitra%2C+A%2E%22">Moitra, A.</searchLink><relatesTo>1,3</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Materials+Engineering+%26+Performance%22">Journal of Materials Engineering & Performance</searchLink>. Dec2025, Vol. 34 Issue 24, p30542-30554. 13p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Fracture+toughness%22">Fracture toughness</searchLink><br /><searchLink fieldCode="DE" term="%22Welded+joints%22">Welded joints</searchLink><br /><searchLink fieldCode="DE" term="%22Brittle+fractures%22">Brittle fractures</searchLink><br /><searchLink fieldCode="DE" term="%22Ductile+fractures%22">Ductile fractures</searchLink><br /><searchLink fieldCode="DE" term="%22Heat+treatment%22">Heat treatment</searchLink><br /><searchLink fieldCode="DE" term="%22Temperature+effect%22">Temperature effect</searchLink><br /><searchLink fieldCode="DE" term="%22Chromium+molybdenum+steel%22">Chromium molybdenum steel</searchLink><br /><searchLink fieldCode="DE" term="%22Fracture+mechanics%22">Fracture mechanics</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Fracture resistance behavior of Mod. 9Cr-1Mo steel base and its all-weld metal in as-weld and post-weld heat-treated (PWHT) conditions has been investigated at room temperature, 350, 450 and 550 °C. The fracture resistance behavior and fracture toughness (JIc) of the weld joint have been evaluated as per ASTM E 1820 and ISO 15653. The base metal's fracture toughness decreased with rising temperature from 352 kJm−2 at room temperature to 248 kJm−2 at 550 °C. The as-welded metal exhibited brittle fracture across all test temperatures. Its fracture toughness was significantly low, ranging from 13 to 17 kJm−2. PHWT improved the weld metal's fracture toughness; values ranged from 468 to 256 kJm−2, with the lowest toughness of 256 kJm−2 at 350 °C. The fractography studies reveal ductile dimples in both the base metal and PWHT specimens, and cleavage facets in as-welded specimens with few small dimples. Additionally, a sharp gradient in hardness profile across the weld interface further confirms the brittle nature of the as-weld joint. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Materials Engineering & Performance 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/s11665-025-12327-7 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 13 StartPage: 30542 Subjects: – SubjectFull: Fracture toughness Type: general – SubjectFull: Welded joints Type: general – SubjectFull: Brittle fractures Type: general – SubjectFull: Ductile fractures Type: general – SubjectFull: Heat treatment Type: general – SubjectFull: Temperature effect Type: general – SubjectFull: Chromium molybdenum steel Type: general – SubjectFull: Fracture mechanics Type: general Titles: – TitleFull: Investigation on Fracture Behavior of Modified 9Cr-1Mo Steel Base and Welded Joint in As-Weld and Post-Weld Heat-Treated Condition. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Singh, Brajesh Kumar – PersonEntity: Name: NameFull: Krishnan, S. A. – PersonEntity: Name: NameFull: Dutt, B. Shashank – PersonEntity: Name: NameFull: Nikhil, R. – PersonEntity: Name: NameFull: Moitra, A. IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 12 Text: Dec2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 10599495 Numbering: – Type: volume Value: 34 – Type: issue Value: 24 Titles: – TitleFull: Journal of Materials Engineering & Performance Type: main |
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