Abstract
Microstructural evolution and mechanical properties of MA754, an yttrium oxide dispersion-strengthened nickel-based superalloy, were investigated after friction stir welding (FSW). A tool rotation rate of 1000 revolution per minute and a traverse speed of 50.8 mm per minute were employed using a cermet (WC-Co) tool. After FSW, fine equiaxed grain structure with a high dislocation density and a random texture was achieved. Agglomeration of yttrium oxide dispersoids was observed in FSW MA754. Room-temperature tensile properties of FSW MA754 were compared to those of as-received MA754 alloy, and the results indicated that particle strengthening contribution decreased as a result of dispersoid agglomeration. © 2013 Elsevier B.V. All rights reserved.
Recommended Citation
J. Wang et al., "Microstructural Evolution and Mechanical Properties of Friction Stir Welded ODS Alloy MA754," Journal of Nuclear Materials, vol. 442, no. 1 thru 3, pp. 1 - 6, Elsevier, Sep 2013.
The definitive version is available at https://doi.org/10.1016/j.jnucmat.2013.08.012
Department(s)
Materials Science and Engineering
International Standard Serial Number (ISSN)
0022-3115
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Elsevier, All rights reserved.
Publication Date
23 Sep 2013
Comments
U.S. Department of Energy, Grant DE-FG07-08ID14925