| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1565343 | Journal of Nuclear Materials | 2013 | 6 Pages |
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 50.8Â 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.
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Authors
Jiye Wang, Wei Yuan, Rajiv S. Mishra, Indrajit Charit,