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.
Copyright Owner
AIP Publishing
Copyright Date
2013
Language
en
File Format
application/pdf
Recommended Citation
Hwang, Yong Seok and Levitas, Valery I., "Phase field simulation of kinetic superheating and melting of aluminum nanolayer irradiated by pico- and femtosecond laser" (2013). Aerospace Engineering Publications. 41.
https://lib.dr.iastate.edu/aere_pubs/41
Included in
Aerospace Engineering Commons, Materials Science and Engineering Commons, Mechanical Engineering Commons
Comments
This article is from Applied Physics Letters103 (2013): 263107, doi:10.1063/1.4858395Posted with permission.