Mathew, M. D. ; Parameswaran, P. ; Bhanu Sankara Rao, K. (2008) Microstructural changes in alloy 625 during high temperature creep Materials Characterization, 59 (5). pp. 508-513. ISSN 1044-5803
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S10445...
Related URL: http://dx.doi.org/10.1016/j.matchar.2007.03.007
Abstract
Microstructural changes in the nickel-base alloy 625 during creep deformation have been investigated in the temperature range of 923 to 1148 K for durations from 30 to 31,800 h. Intermetallic phases such as γ"-phase and δ-phase have been found to precipitate extensively within the austenitic matrix under most of the test conditions. The γ"-phase was observed at 973 K and δ-phase was observed at all temperatures above 973 K. The morphology of the needle-shaped δ-phase was influenced by time and temperature of exposure and stress. An almost continuous decoration of M23C6 type carbides was observed on the grain boundaries.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Materials Information Society. |
| Keywords: | Alloy 625; Creep; Microstructure; Delta-phase; γ-phase |
| ID Code: | 18310 |
| Deposited On: | 17 Nov 2010 12:49 |
| Last Modified: | 18 May 2011 05:07 |
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