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Microstructural changes in alloy 625 during high temperature creep

✍ Scribed by M.D. Mathew; P. Parameswaran; K. Bhanu Sankara Rao

Book ID
113780119
Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
727 KB
Volume
59
Category
Article
ISSN
1044-5803

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✦ Synopsis

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 Ξ³β€³-phase and Ξ΄-phase have been found to precipitate extensively within the austenitic matrix under most of the test conditions. The Ξ³β€³-phase was observed at 973 K and Ξ΄-phase was observed at all temperatures above 973 K. The morphology of the needle-shaped Ξ΄-phase was influenced by time and temperature of exposure and stress. An almost continuous decoration of M 23 C 6 type carbides was observed on the grain boundaries.

πŸ“œ SIMILAR VOLUMES

132. Microstructural changes produced in
132. Microstructural changes produced in graphite by high temperature creep
✍ W.V Green; E.G Zukas πŸ“‚ Article πŸ“… 1969 πŸ› Elsevier Science 🌐 English βš– 111 KB

are considerably under-estimated. This difficulty must be understood before defect structure calculations can be carried out adequately for graphite. The Morse potential yields a much larger anharmonic coefficient than is deduced from thermal expansion measurements.