Makineni, S.K. ; Nithin, B. ; Chattopadhyay, K. (2015) A new tungsten-free γ–γ’ Co–Al–Mo–Nb-based superalloy Scripta Materialia, 98 . pp. 36-39. ISSN 13596462
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Official URL: http://doi.org/10.1016/j.scriptamat.2014.11.009
Related URL: http://dx.doi.org/10.1016/j.scriptamat.2014.11.009
Abstract
We present the first report of a tungsten-free cobalt-based superalloy having a composition Co–10Al–5Mo–2Nb. The alloy is strengthened by cuboidal precipitates of metastable Co3(Al,Mo,Nb) distributed throughout the microstructure. The precipitates are coherent with the face-centred cubic γ-Co matrix and possess ordered L12 structure. The microstructure is identical to the popular γ–γ’ type nickel-based superalloys and that of recently reported Co–Al–W-based alloys. Being tungsten free, the reported alloy has higher specific proof stress compared to existing cobalt-based superalloys.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Ltd |
| ID Code: | 135296 |
| Deposited On: | 20 Jan 2023 11:00 |
| Last Modified: | 20 Jan 2023 11:00 |
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