Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1580819 | Materials Science and Engineering: A | 2010 | 6 Pages |
Abstract
The influence of phosphorus on the microstructure and stress-rupture properties of IN783 alloy, the newly developed low thermal expansion superalloy, was investigated. Addition of phosphorus markedly promotes the precipitation of β-NiAl phase which improves the intergranular oxidation resistance of high P-doped alloys. However, phosphorus segregation deteriorates the interfacial cohesion of intergranular β/γ matrix and induces many intergranular cracks. Consequently, the stress-rupture life is reduced in high P-doped alloys.
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Authors
L.X. Yu, Y.R. Sun, W.R. Sun, X.F. Sun, S.R. Guo, Z.Q. Hu,