Continuous Stiffness Measurements and Nanoindentation Studies of bcc Mo: An Atomistic Approach

Abstract

Molecular dynamics (MD) simulations were performed to examine the continuous stiffness measurements (CSM) and nanoindentation behavior at 300 K temperature for body-centered cubic molybdenum (Mo). The nanomechanical behavior was examined by using a spherical indenter and the values of elastic modulus and hardness were extracted. In the nanoindentation model, we made use of a sinusoidal load in order to obtain the dynamical properties such as storage modulus, mechanical damping factor, and loss modulus. Open visualization tool (OVITO) was used to visualize the dislocation analysis, to track the indenter depth and grains response to the applied load. Dislocation loops were generated and found an increase in their areas as the indenter penetrated deep into the sample. This work provides useful insights toward a broad understanding of the structural, nano-mechanical, and damping properties of pure Mo.

Department(s)

Civil, Architectural and Environmental Engineering

Second Department

Mechanical and Aerospace Engineering

Comments

Center for Nanoscale Science and Technology, Grant None

Keywords and Phrases

Dynamic nanoindentation; Molecular dynamics; Nanoindenation; OVITO; Spherical indenter

International Standard Serial Number (ISSN)

0975-1645; 0972-2815

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Springer, All rights reserved.

Publication Date

01 Jun 2022

Link to Full Text

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