Phosphorus and sulfur segregation in model heat resisting nickel alloy

Chabina E.B.
UDC
669.018.44:669.245
DOI
10.18577/2307-6046-2015-0-9-2-2
Article PDF (Russian) (1.06 MB)
How to cite
Chabina E.B. Phosphorus and sulfur segregation in model heat resisting nickel alloy // Proceedings of VIAM. 2015. No. 9. DOI: 10.18577/2307-6046-2015-0-9-2-2. URL: https://test.viam.ru/en/journal/2015/9/2
Abstract

Harmful impurity (sulfur and phosphorus) and microalloying additives (boron and lanthanum) competition at model heat resisting nickel alloy of Ni–Co–Cr–Al–Ti–W–Mo–Nb system inner interfaces segregations formation was investigated. It was shown that sulfur and phosphorus form segregation on grain boundaries and interphase interfaces «inclusion – matrix». Boron and lanthanum force out sulfur and phosphorus from interfaces, and these microalloying additives action mechanisms are different: boron refines and strengthens grain boundaries, and the lanthanum connects sulfur and phos-phorus in favorable morphology inclusions

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