Xiadong Bharat Continuous Stiffness Review Sciencedirect

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.

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Acknowledgements

This research work was financially supported by China scholarship council (CSC) and College of Nuclear Science and Technology (CNST), Harbin engineering university (HEU), China.

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Authors and Affiliations

College of Nuclear Science and Technology, Harbin Engineering University, Harbin, 150000, China

Asmat Ullah, Qingyu Wang, Yushou Song & Muhammad Ado
School of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China

M. Mustafa Azeem
International Collaborative Laboratory of 2D, Materials for Optoelectronics Science and Technology, Shenzhen University, Shenzhen, 518060, China

Muhammad Sohail

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Correspondence to Asmat Ullah.

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Ullah, A., Wang, Q., Song, Y. et al. Continuous Stiffness Measurements and Nanoindentation Studies of bcc Mo: An Atomistic Approach. Trans Indian Inst Met 75, 1555–1561 (2022). https://doi.org/10.1007/s12666-022-02524-6

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Received: 16 October 2021
Accepted: 04 January 2022
Published: 09 February 2022
Issue Date: June 2022
DOI : https://doi.org/10.1007/s12666-022-02524-6

Keywords

Molecular dynamics
Spherical indenter
OVITO
Nanoindenation
Dynamic nanoindentation

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