Nanoindentation of NiAl and Ni3Al crystals on (100), (110), and (111) surfaces: A molecular dynamics study

Abstract : Molecular dynamics simulations were performed to study the nanoindentation of NiAl and Ni3Al crystals on three surfaces: (100), (110), and (111). The calculated load-displacement curves show discrete drops at certain indentation depths, indicating dislocation bursts during indentation. The hardness values for the two materials were found to depend significantly on the indented crystallographic plane: the (100) surface is the softest for NiAl and the hardest for Ni3Al. We also found distinctive deformation activities in the subsurface region in Ni3Al crystals, while dislocation loops propagate deep into the substrate in NiAl systems.
Liste complète des métadonnées

Cited literature [30 references]  Display  Hide  Download

https://hal.laas.fr/hal-01496618
Contributor : Anne Hemeryck <>
Submitted on : Monday, March 27, 2017 - 4:33:35 PM
Last modification on : Thursday, January 11, 2018 - 6:28:06 AM
Document(s) archivé(s) le : Wednesday, June 28, 2017 - 3:28:08 PM

File

Seymour_APL104_2014.pdf
Publisher files allowed on an open archive

Identifiers

Citation

Richard Seymour, Anne Hémeryck, Ken-Ichi Nomura, Weiqiang Wang, Rajiv Kalia, et al.. Nanoindentation of NiAl and Ni3Al crystals on (100), (110), and (111) surfaces: A molecular dynamics study. Applied Physics Letters, American Institute of Physics, 2014, 104 (14), pp.141904 - 84907. 〈http://aip.scitation.org/doi/full/10.1063/1.4867168〉. 〈10.1063/1.4867168〉. 〈hal-01496618〉

Share

Metrics

Record views

54

Files downloads

39