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Cyclic deformation behavior of Mg–SiC nanocomposites on the macroscale and nanoscale

Hübler, Daniela ; Winkler, Kai ; Riedel, Ralf ; Kamrani, Sepideh ; Fleck, Claudia (2022):
Cyclic deformation behavior of Mg–SiC nanocomposites on the macroscale and nanoscale. (Publisher's Version)
In: Fatigue & Fracture of Engineering Materials & Structures, 45 (2), pp. 386-399. John Wiley & Sons, e-ISSN 1460-2695,
DOI: 10.26083/tuprints-00020994,
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Item Type: Article
Origin: Secondary publication DeepGreen
Status: Publisher's Version
Title: Cyclic deformation behavior of Mg–SiC nanocomposites on the macroscale and nanoscale
Language: English
Abstract:

Metal‐ceramic nanocomposites are promising candidates for applications necessitating light weight and excellent fatigue resistance. We produced Mg–SiC nanocomposites from mechanically milled powders, yielding a homogeneous nanocrystalline structure and excellent quasistatic strength values. Little is known, however, about the fatigue behavior of such composites. Here, we used load increase tests on the macroscale to yield estimation values of the fatigue endurance limit. Fatigue strength increased significantly for the materials processed by the powder metallurgical route. We further investigated the cyclic deformation behavior under stress‐controlled conditions on the macroscale and nanoscale. Cyclic nanoindentation showed that indentation depth and cyclic plastic deformation decreased with increasing reinforcement content, hinting to a higher cyclic strength and corroborating the results from the macroscopic load increase tests. Our results therefore show that cyclic nanoindentation reliably determines the plastic deformation behavior of Mg nanocomposites offering the possibility of fast material analysis.

Journal or Publication Title: Fatigue & Fracture of Engineering Materials & Structures
Volume of the journal: 45
Issue Number: 2
Place of Publication: Darmstadt
Publisher: John Wiley & Sons
Uncontrolled Keywords: cyclic deformation behavior, cyclic nanoindentation, fatigue behavior, load increase test, Mg–SiC nanocomposite
Classification DDC: 500 Naturwissenschaften und Mathematik > 540 Chemie
600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids
Date Deposited: 11 Jul 2022 13:32
Last Modified: 08 Sep 2022 08:35
DOI: 10.26083/tuprints-00020994
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-209946
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/20994
PPN: 49896986X
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