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Deformation mechanisms in the directionally solidified nickel-based CM247LC at room temperature.
- Source :
-
Philosophical Magazine Letters . May/Jun2022, Vol. 102 Issue 5/6, p190-199. 10p. - Publication Year :
- 2022
-
Abstract
- After solutionizing and aging at 980°C for various durations, the compressive deformation behaviour and mechanisms of the directionally solidified nickel-based superalloy CM247LC are investigated at room temperature. Experimental results show that the yield strength decreases gradually from 991 ± 1.2–672 ± 7.5 MPa with increasing the γ′ precipitate size from 145 ± 2–604 ± 19 nm. Transmission electron microscope observations on the slightly deformed specimens reveal that, in contrast to previous researches, plastic deformation of all the specimens is controlled by strongly coupled dislocations cutting through γ′ precipitates. Based on these experimental results, the relationship between the yield strength and precipitate size is discussed. [ABSTRACT FROM AUTHOR]
- Subjects :
- *MATERIAL plasticity
*DEFORMATIONS (Mechanics)
*TRANSMISSION electron microscopes
Subjects
Details
- Language :
- English
- ISSN :
- 09500839
- Volume :
- 102
- Issue :
- 5/6
- Database :
- Academic Search Index
- Journal :
- Philosophical Magazine Letters
- Publication Type :
- Academic Journal
- Accession number :
- 157982866
- Full Text :
- https://doi.org/10.1080/09500839.2022.2049908