Plastic deformation mechanisms in a crept L12 hardened Co-base superalloy

Pyczak F, Bauer A, Göken M, Neumeier S, Lorenz U, Oehring M, Schell N, Schreyer A, Stark A, Symanzik F (2013)

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2013

Journal

Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing Elsevier

Publisher: Elsevier

Book Volume: 571

Pages Range: 13-18

DOI: 10.1016/j.msea.2013.02.007

Abstract

Plastic deformation mechanisms in a crept L1 hardened Co-base superalloy are investigated by transmission electron microscopy. The deformation happens mainly in the cobalt solid solution matrix by slip of ordinary a/2〈101〉{111} dislocations and rafting of the γ' precipitates perpendicular to the external compressive stress axis is observed. Dislocation structures are early stages of the development of γ/γ' interfacial dislocation networks. Furthermore, γ' precipitates are sheared by partial dislocations generating stacking faults which sometimes extend over matrix channels and neighbouring γ' precipitates. Due to the positive lattice mismatch at creep temperature the dislocation activity in matrix channels perpendicular to the compressive external stress axis is less pronounced compared to parallel channels. © 2013 Elsevier Ltd.

Authors with CRIS profile

Alexander Bauer Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Mathias Göken Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Steffen Neumeier Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)

Involved external institutions

Helmut-Schmidt-Universität - Universität der Bundeswehr Hamburg DE Germany (DE) Helmholtz-Zentrum Geesthacht Zentrum für Material- und Küstenforschung GmbH (HZG) DE Germany (DE)

How to cite

APA:

Pyczak, F., Bauer, A., Göken, M., Neumeier, S., Lorenz, U., Oehring, M.,... Symanzik, F. (2013). Plastic deformation mechanisms in a crept L12 hardened Co-base superalloy. Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 571, 13-18. https://doi.org/10.1016/j.msea.2013.02.007

MLA:

Pyczak, Florian, et al. "Plastic deformation mechanisms in a crept L12 hardened Co-base superalloy." Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 571 (2013): 13-18.

BibTeX: Download