Misfit in Inconel-Type Superalloy
Joint Authors
Davydov, Vadim
Beran, Přemysl
Strunz, Pavel
Petrenec, Martin
Polák, Jaroslav
Source
Advances in Materials Science and Engineering
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-12-16
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
An important parameter for the characterization of microstructural changes in nickel base superalloys is the misfit - the relative difference between lattice parameters of γ matrix and γ′ precipitates.
The misfit in IN738LC superalloy was examined at POLDI time-of-flight (TOF) neutron diffractometer both at room temperature and in situ at elevated temperatures using a high-temperature furnace.
A careful out-of-furnace measurement yielded the lattice parameters of both γ and γ′ phase at room temperature (aγ=3.58611(10) Å, aγ′=3.58857(17) Å) as well as the misfit (equal to 6.9(6)×10-4).
The in situ measurement at elevated temperatures provided the temperature dependence of the lattice parameters of γ (up to 1120°C) and γ′ (up to 1000°C).
Using these data, the evolution of the misfit with temperature was calculated.
The misfit decreases with increasing temperature until it reaches zero value at a temperature around 800°C.
Above 800°C, it becomes negative.
American Psychological Association (APA)
Strunz, Pavel& Petrenec, Martin& Davydov, Vadim& Polák, Jaroslav& Beran, Přemysl. 2013. Misfit in Inconel-Type Superalloy. Advances in Materials Science and Engineering،Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-469787
Modern Language Association (MLA)
Strunz, Pavel…[et al.]. Misfit in Inconel-Type Superalloy. Advances in Materials Science and Engineering No. 2013 (2013), pp.1-7.
https://search.emarefa.net/detail/BIM-469787
American Medical Association (AMA)
Strunz, Pavel& Petrenec, Martin& Davydov, Vadim& Polák, Jaroslav& Beran, Přemysl. Misfit in Inconel-Type Superalloy. Advances in Materials Science and Engineering. 2013. Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-469787
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-469787