Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Formation of Fractal Dendrites by Laser induced melting of Aluminum
  Alloys   We report on the fabrication of fractal dendrites by laser induced melting of
aluminum alloys. We target boron carbide (B4C) that is one of the most
effective radiation-absorbing materials which is characterised by a low
coefficient of thermal expansion. Due to the high fragility of B4C crystals we
were able to introduce its nanoparticles into a stabilization aluminum matrix
of AA385.0. The high intensity laser field action led to the formation of
composite dendrite structures under the effect of local surface melting. The
modelling of the dendrite cluster growth confirms its fractal nature and sheds
light on the pattern behavior of the resulting quasicrystal structure.

37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th