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Analysis of hypervelocity impacts: the tungsten case

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Analysis of hypervelocity impacts: the tungsten case. / Fraile, Alberto; Dwivendi, Prashant; Bonny, Giovanni et al.
In: Nuclear Fusion, Vol. 62, No. 2, 026034, 05.01.2022.

Research output: Contribution to journal › Article › peer-review

HarvardHarvard

Fraile, A, Dwivendi, P, Bonny, G & Polcar, T 2022, 'Analysis of hypervelocity impacts: the tungsten case', Nuclear Fusion, vol. 62, no. 2, 026034. <https://iopscience.iop.org/article/10.1088/1741-4326/ac42f6/meta>

APA

Fraile, A., Dwivendi, P., Bonny, G., & Polcar, T. (2022). Analysis of hypervelocity impacts: the tungsten case. Nuclear Fusion, 62(2), Article 026034. https://iopscience.iop.org/article/10.1088/1741-4326/ac42f6/meta

CBE

Fraile A, Dwivendi P, Bonny G, Polcar T. 2022. Analysis of hypervelocity impacts: the tungsten case. Nuclear Fusion. 62(2):Article 026034.

MLA

Fraile, Alberto et al. "Analysis of hypervelocity impacts: the tungsten case". Nuclear Fusion. 2022. 62(2).

VancouverVancouver

Fraile A, Dwivendi P, Bonny G, Polcar T. Analysis of hypervelocity impacts: the tungsten case. Nuclear Fusion. 2022 Jan 5;62(2):026034.

Author

Fraile, Alberto ; Dwivendi, Prashant ; Bonny, Giovanni et al. / Analysis of hypervelocity impacts: the tungsten case. In: Nuclear Fusion. 2022 ; Vol. 62, No. 2.

RIS

TY - JOUR

T1 - Analysis of hypervelocity impacts: the tungsten case

AU - Fraile, Alberto

AU - Dwivendi, Prashant

AU - Bonny, Giovanni

AU - Polcar, Tomas

N1 - Validated without version as author emailed to say they couldn't get hold of a version

PY - 2022/1/5

Y1 - 2022/1/5

N2 - The atomistic mechanisms of damage initiation during high velocity (v up to 9 km s−1, kinetic energies up to 200 keV) impacts of W projectiles on a W surface have been investigated using parallel molecular-dynamics simulations involving large samples (up to 40 million atoms). Various aspects of the high velocity impacts, where the projectile and part of the target material undergo massive plastic deformation, breakup, melting, and vaporization, are analyzed. Different stages of the penetration process have been identified through a detailed examination of implantation, crater size and volume, sputtered atoms, and dislocations created by the impacts. The crater volume increases linearly with the kinetic energy for a given impactor; and the total dislocation length (TDL) increases with the kinetic energy but depends on the size of the impactor. We found that the TDL does not depend on the used interatomic potential. The results are rationalized based on the physical properties of bcc W.

AB - The atomistic mechanisms of damage initiation during high velocity (v up to 9 km s−1, kinetic energies up to 200 keV) impacts of W projectiles on a W surface have been investigated using parallel molecular-dynamics simulations involving large samples (up to 40 million atoms). Various aspects of the high velocity impacts, where the projectile and part of the target material undergo massive plastic deformation, breakup, melting, and vaporization, are analyzed. Different stages of the penetration process have been identified through a detailed examination of implantation, crater size and volume, sputtered atoms, and dislocations created by the impacts. The crater volume increases linearly with the kinetic energy for a given impactor; and the total dislocation length (TDL) increases with the kinetic energy but depends on the size of the impactor. We found that the TDL does not depend on the used interatomic potential. The results are rationalized based on the physical properties of bcc W.

M3 - Article

VL - 62

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 2

M1 - 026034

ER -