Substructural evolution in a directionally solidified nickel-base superalloy during relaxation fatigue tests at 850 degrees C
IR@NML: CSIR-National Metallurgical Laboratory, Jamshedpur
View Archive Info| Field | Value | |
| Title |
Substructural evolution in a directionally solidified nickel-base superalloy during relaxation fatigue tests at 850 degrees C
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| Creator |
Rai, R K
Sahu, J K |
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| Subject |
Materials Charcterization
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| Description |
This paper reports new dislocation configurations responsible for cyclic hardening/softening behaviour of a directionally solidified nickel base superalloy after relaxation fatigue tests at 850 degrees C with hold durations of 1 and 5 min. Dislocation interactions in the gamma (gamma)-matrix and the formation of new dislocation configurations during relaxation fatigue (RF) test with 1 min hold duration is responsible for the cyclic hardening behaviour, whereas, the coarsening of gamma prime (gamma')-precipitates are attributed to the cyclic softening behaviour during 5 min hold testing. (C) 2018 Elsevier B.V. All rights reserved.
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| Publisher |
Elsevier
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| Date |
2018
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| Type |
Article
PeerReviewed |
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| Relation |
https://doi.org/10.1016/j.matlet.2018.07.124
http://eprints.nmlindia.org/7902/ |
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| Identifier |
Rai, R K and Sahu, J K (2018) Substructural evolution in a directionally solidified nickel-base superalloy during relaxation fatigue tests at 850 degrees C. Materials Letters, 230 (IF-3.019). pp. 241-244.
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