Modelling the effect of intrinsic radiation damage on mechanical properties : the crystalline-to-amorphous transition in zircon

Mechanical modelling using the level-cut Gaussian random field approach has been employed to simulate the effect of radiation induced amorphization on the Young´s modulus, Poisson´s ratio and hardness of zircon (ZrSiO4). A good agreement with previous nanoindentation experiments has been achieved. Two percolation transitions occur at 6% and 4% amorphous volume fraction, leading to deviations from linearity in the evolution of the Young´s modulus. Interface regions between crystalline and amorphous areas stabilise the hardness for a considerable amount of amorphous fraction. The modelling approach is promising for predicting the intrinsic radiation damage related evolution of the mechanical properties of various materials.

Subjects

Amorphization

Interfaces

Micromechanical modelling

Nanoindentation

Polyphase microstructure

DDC Class

510: Mathematik

530: Physik

540: Chemie

550: Geowissenschaften

620: Ingenieurwissenschaften

Lizenz

https://creativecommons.org/licenses/by-nc-nd/4.0/

Name

1-s2.0-S1359646221000695-main.pdf

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1.95 MB

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Adobe PDF

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Modelling the effect of intrinsic radiation damage on mechanical properties : the crystalline-to-amorphous transition in zircon