DTIprojectECCCpaperassubmittedDec2008.pdf (2.44 MB)
Microstructural evolution in creep exposed IN617
conference contribution
posted on 2009-10-13, 14:56 authored by Ram Krishna, Sarah V. Hainsworth, S.P.A. Gill, A. Strang, Helen V. AtkinsonInconel alloys are currently being investigated for high temperature applications such as HP and IP valve chest and rotor forgings in advanced steam power plant operating at temperatures of 700°C and above.
One of the preferred alloys for these components is IN617. This is a solid solution strengthened austenitic
Ni-based alloy containing ~23% Cr, 12% Co, and 9% Mo with small additions of Ti and Al which can
contribute some additional precipitation strengthening. In the solution treated condition, the
microstructure consists of equiaxed austenite containing M23C6 at the grain boundaries and occasional
TiN particles within the matrix. Owing to high temperature exposure and the creep deformation processes
that occur in-service, evolution of the microstructure occurs in the form of precipitation, precipitate
coarsening and recovery effects. This paper discusses microstructural evolution occurring in this alloy in
samples that have been exposed to temperatures up to 700°C and for durations up to 45,000 hours using
advanced FEGSEM, TEM and XRD techniques.
History
Citation
2nd ECCC International Conference on Creep and Fracture in High Temperature Components: Design and Life Assessment Issues, 21-23 April 2009, Zurich, Proceedings of.Published in
2nd ECCC International Conference on Creep and Fracture in High Temperature Components: Design and Life Assessment IssuesPublisher
Institute of Materials, Minerals and MiningAvailable date
2009-10-13Publisher version
http://www.iom3.org/events/2nd-eccc-international-conference-creep-and-fracture-high-temperature-components-design-and-lNotes
This paper was presented at, and appears in the Proceedings of, the 2nd ECCC International Conference on Creep and Fracture in High Temperature Components: Design and Life Assessment Issues, 21 Apr 2009-23 Apr 2009, Zurich, Switzerland.Language
enAdministrator link
Usage metrics
Categories
No categories selectedLicence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC