Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Solid solution decomposition and Guinier-Preston zone formation in Al-Cu
  alloys: A kinetic theory with anisotropic interactions   Using methods of statistical kinetic theory parametrized with
first-principles interatomic interactions that include chemical and strain
contributions, we investigated the kinetics of decomposition and microstructure
formation in Al-Cu alloys as a function of temperature and alloy concentration.
We show that the decomposition of the solid solution forming platelets of
copper, known as Guinier-Preston (GP) zones, includes several stages and that
the transition from GP1 to GP2 zones is determined mainly by kinetic factors.
With increasing temperature, the model predicts a gradual transition from
platelet-like precipitates to equiaxial ones and at intermediate temperatures
both precipitate morphologies may coexist.

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The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
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The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
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The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin