Strain partitioning between matrix and precipitates during fatigue deformation of 2.25Cr-Mo steel
IR@NML: CSIR-National Metallurgical Laboratory, Jamshedpur
View Archive Info| Field | Value | |
| Title |
Strain partitioning between matrix and precipitates during fatigue deformation of 2.25Cr-Mo steel
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| Creator |
Rajpurohit, R S
Jena, P S M Mahato, B Sahu, J K |
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| Subject |
Steel Metallurgy
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| Description |
The influence of stress rate on load/strain partitioning between different phases of a micro-alloyed 2.25Cr-Mo steel during stress-controlled fatigue deformation at room temperature (RT) was studied by conducting asymmetrical ratcheting fatigue tests employing values of 50-450 MPa/s. Fatigue life (N-f) significantly reduced for tests conducted by employing = 50 MPa/s compared to 450 MPa/s, i.e. N-f = 510 and 24,983 cycles respectively. From TEM studies, it is confirmed that due to load/strain partitioning stacking faults (SFs)/micro-twin formed in M23C6 carbides during high fatigue deformation, whereas dislocation cells are formed in low fatigue deformation. A plausible explanation to account for different cycle life with change in of fatigue deformation is offered.
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| Publisher |
Taylor & francis inc.
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| Date |
2020-05
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| Type |
Article
PeerReviewed |
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| Relation |
http:// 10.1080/02670836.2020.1762981
http://eprints.nmlindia.org/8151/ |
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| Identifier |
Rajpurohit, R S and Jena, P S M and Mahato, B and Sahu, J K (2020) Strain partitioning between matrix and precipitates during fatigue deformation of 2.25Cr-Mo steel. Material Science and Technology (IF-1.835).
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