Document Type

Article

Publication Date

2013

Journal or Book Title

Applied Physics Letters

Volume

103

First Page

263107-1

Last Page

263107-4

DOI

10.1063/1.4858395

Abstract

Two melting mechanisms are reproduced and quantified for superheating and melting of Al nanolayer irradiated by pico- and femtosecond laser using the advanced phase-field approach coupled with mechanics and a two-temperature model. At heating rates Q≤79.04  K/ps induced by picosecond laser, two-sided barrierless surface melting forms two solid-melt interfaces, which meet near the center of a sample. The temperature for surface melting is a linear function, and for complete melting it is a cubic function, of logQ . At Q≥300 K/ps induced by femtosecond laser, barrierless and homogeneous melting (without nucleation) at the sample center occurs faster than due to interface propagation. Good agreement with experimental melting time was achieved in a range of 0.95≤Q≤1290 K/ps without fitting of material parameters.

Comments

This article is from Applied Physics Letters103 (2013): 263107, doi:10.1063/1.4858395Posted with permission.

Copyright Owner

AIP Publishing

Language

en

Date Available

2014-06-06

File Format

application/pdf

Available for download on Saturday, January 01, 8000

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