Intermediate Co/Ni-base model superalloys - Thermophysical properties, creep and oxidation

Zenk C, Neumeier S, Engl N, Fries SG, Dolotko O, Weiser M, Virtanen S, Göken M (2016)


Publication Status: Published

Publication Type: Journal article

Publication year: 2016

Journal

Publisher: PERGAMON-ELSEVIER SCIENCE LTD

Book Volume: 112

Pages Range: 83-86

DOI: 10.1016/j.scriptamat.2015.09.018

Abstract

The mechanical properties of gamma'-strengthened Co-Ni-Al-W-Cr model superalloys extending from pure Ni-base to pure Co-base superalloys have been assessed. Differential scanning calorimetry measurements and thermodynamic calculations match well and show that the gamma' solvus temperature decreases with increasing Co-content The gamma/gamma' lattice misfit is negative on the Ni- and positive on the Co-rich side. High Ni-contents decelerate the oxidation kinetics up to a factor of 15. The creep strength of the Ni-base alloy increases by an order of magnitude with additions of Co before it deteriorates strongly upon higher additions despite an increasing gamma' volume fraction. (C) 2015 Elsevier Ltd. All rights reserved.

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APA:

Zenk, C., Neumeier, S., Engl, N., Fries, S.G., Dolotko, O., Weiser, M.,... Göken, M. (2016). Intermediate Co/Ni-base model superalloys - Thermophysical properties, creep and oxidation. Scripta Materialia, 112, 83-86. https://dx.doi.org/10.1016/j.scriptamat.2015.09.018

MLA:

Zenk, Christopher, et al. "Intermediate Co/Ni-base model superalloys - Thermophysical properties, creep and oxidation." Scripta Materialia 112 (2016): 83-86.

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