Substructural evolution in a directionally solidified nickel-base superalloy during relaxation fatigue tests at 850 degrees C

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.

Full text not available from this repository.

Abstract

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.

Item Type:Article
Official URL/DOI:https://doi.org/10.1016/j.matlet.2018.07.124
Uncontrolled Keywords:Relaxation-fatigue test;Superalloy;Microstructure;Electron microscopy
Divisions:Material Science and Technology
ID Code:7902
Deposited By:Sahu A K
Deposited On:19 Sep 2019 12:27
Last Modified:19 Sep 2019 12:27
Related URLs:

Repository Staff Only: item control page