Work

Incipient plasticity and indentation response of MgO surfaces using molecular dynamics

Year: 2018

Type: article

Abstract: The mechanical characteristics of magnesium oxide (MgO) based on nanoindentation are studied using molecular dynamics (MD) simulation. The effects of indenting speed and temperature on the structural deformation and loading-unloading curve are investigated. Results show that the strained surface of the MgO expands to produce a greater relaxation of atoms in the surroundings of the indent. The dislocation propagation and pile-up for MgO occur more significantly with the increasing temperature from 300 K to 973 K. In addition, with increasing temperature, the high strained atoms with a great perturbation appearing at the groove location.

Source: Materials Research Express

DOI: 10.1088/2053-1591/aac0d6

Authors: Anh-Son Tran, Zheng-Han Hong, Ming-Yuan Chen, Te-Hua Fang

Institutions: National Kaohsiung University of Science and Technology, Metal Industries Research & Development Centre

Language: English

Topic: Metal and Thin Film Mechanics

Subfield: Mechanics of Materials

Field: Engineering

Domain: Physical Sciences

Open Access status: bronze

Funder: Ministry of Science and Technology, Taiwan

Awards: G1274001682, G528124788, G5308801269, G7761879087, G939887807