Please use this identifier to cite or link to this item:
Publisher DOI: 10.1557/s43578-022-00870-1
Title: Densification of nanoporous metals during nanoindentation: The role of structural and mechanical properties
Language: English
Authors: Huber, Norbert  
Ryl, I. 
Wu, Theodore Yao-tsu 
Hablitzel, Murilo P. 
Zandersons, Birthe 
Richert, Claudia 
Lilleodden, Erica 
Keywords: Densification; Finite element simulation; Image processing; Nanoindentation; Nanoporous metal
Issue Date: 2023
Source: Journal of Materials Research 38: 853-866 (2023)
Abstract (english): 
The analysis of the densification behavior of nanoporous metals in nanoindentation is challenging in simulations and experiments. A deeper understanding of the densification behavior provides valuable information about the different deformation mechanisms in nanoindentation and compression experiments. The developed two-scale model allows for predicting the densification field for variable microstructure and elastic–plastic behavior. It could be shown that the penetration depth of the densification field is mainly controlled by the ratio of the macroscopic work hardening rate to yield stress. The shape as well as the value at characteristic isolines of densification depend mainly on the macroscopic plastic response of the nanoporous material. This could be confirmed by nanoindentation experiments, where the densification under the indenter was measured for ligament sizes from 35 to 150 nm. Although the depth of the densification field was underpredicted by the simulations, the experiments confirmed the predicted trends.
DOI: 10.15480/882.4969
ISSN: 0884-2914
Journal: Journal of materials research 
Institute: Keramische Hochleistungswerkstoffe M-9 
Werkstoffphysik und -technologie M-22 
Document Type: Article
Project: SFB 986: Teilprojekt B04 - Mikromechanisches Materialverhalten hierarchischer Werkstoffe 
SFB 986: Teilprojekt B08 - Mikromechanisch-elektrochemische Kopplung von nanostrukturierten Festkörpern beschichtet mit leitfähigem Polymer 
SFB 986: Teilprojekt B02 - Feste und leichte Hybridwerkstoffe auf Basis nanoporöser Metalle 
License: CC BY 4.0 (Attribution) CC BY 4.0 (Attribution)
Appears in Collections:Publications with fulltext

Files in This Item:
File Description SizeFormat
s43578-022-00870-1.pdfVerlags-PDF5,74 MBAdobe PDFView/Open
Show full item record

Page view(s)

checked on Jun 3, 2023


checked on Jun 3, 2023

Google ScholarTM


Note about this record

Cite this record


This item is licensed under a Creative Commons License Creative Commons