Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effects of temperature and surface step on the incipient plasticity in
  strained aluminium studied by atomistic simulations   Atomistic simulations using an EAM potential are carried out to investigate
the first stages of plasticity in aluminum slabs, in particular the effect of
both temperature and step geometry on the nucleation of dislocations from
surface steps. Temperature is shown to significantly reduce the elastic limit,
and to activate the nucleation of dislocation half-loops. Twinning occurs by
successive nucleations in adjacent glide planes. The presence of a kinked step
is shown to have no influence on the nucleation mechanisms.

5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg