A new tungsten-free γ–γ’ Co–Al–Mo–Nb-based superalloy

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A new tungsten-free γ–γ’ Co–Al–Mo–Nb-based superalloy

Makineni, S.K.; Nithin, B.; Chattopadhyay, K.

Scripta materialia, 03/2015, Letnik: 98

Journal Article

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.

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Makineni, S.K. | Nithin, B. | Chattopadhyay, K.

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Leto	Faktor vpliva		Izdaja		Kategorija		Razvrstitev
Leto	JCR	SNIP	JCR	SNIP	JCR	SNIP	JCR	SNIP

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