Nickel-based superalloy operating temperature determination via analysis of gamma/gamma' microstructure and coating/base material interdiffusion

Author(s)
Ham, Wendy D. (Wendy Decker)
Thumbnail
DownloadFull printable version (1.663Mb)
Other Contributors
Massachusetts Institute of Technology. Dept. of Materials Science and Engineering.
Advisor
Samuel M. Allen.
Terms of use
M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582
Metadata
Show full item record
Abstract
The average operating temperature of RENÉ N5® high pressure turbine blades was evaluated via [gamma]/[gamma]' microstructure and coating/base metal interdiffusion methods. The [gamma]' volume fraction was measured by point counting and direct area measurement. The data, however, were found inadequate to accurately determine the operating temperature. The interdiffusion between the platinum aluminide coating and the base material was modeled with an error function solution to Fick's Second Law. This method provided an estimation of the operating temperature that varied from the reported operating temperature by only 1%.
Description
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2005.
 
Includes bibliographical references (leaves 23-25).
 
Date issued
2005
URI
http://hdl.handle.net/1721.1/33397
Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Publisher
Massachusetts Institute of Technology
Keywords
Materials Science and Engineering.
Collections