Multiphysics modeling femtosecond laser ablation of Ti6Al4V with material transient properties

Yusi Chen, Haipeng Sun, Gen Lin, Shangyin Song, Pengfei Ji*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Femtosecond laser ablation associates with a series of multiphysics phenomena (electron thermalization, electron thermal conduction, electron-phonon coupled energy transport, melting, vaporization and phase explosion) and the instant variation of material transient properties, which impacts the laser energy absorption and the subsequent material removal. In this work, a multiphysics model with material transient properties is developed to study the femtosecond laser ablation of Ti6Al4V. A two-dimensional axisymmetric simulation is performed. The predicted ablation depth and ablation diameter with material transient properties show good agreements with the experimental data. The necessity of material transient properties for femtosecond laser ablation is demonstrated. Besides analyzing the roles of material transient properties on femtosecond laser ablation, the ablation thresholds of Ti6Al4V are probed for different pulse durations. In addition, the impact of pulse duration on femtosecond laser heat affected zone is studied. This work contributes to understand roles of material transient properties in femtosecond laser ablation.

Original languageEnglish
Article number175360
JournalJournal of Alloys and Compounds
Volume1002
DOIs
Publication statusPublished - 15 Oct 2024

Keywords

  • Femtosecond laser
  • Heat affected zone
  • Material transient properties
  • Two-temperature model

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Chen, Y., Sun, H., Lin, G., Song, S., & Ji, P. (2024). Multiphysics modeling femtosecond laser ablation of Ti6Al4V with material transient properties. Journal of Alloys and Compounds, 1002, Article 175360. https://doi.org/10.1016/j.jallcom.2024.175360