Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Solute softening and vacancy generation by diffusion-less climb in
  magnesium alloys   Active room temperature diffusion-less climb of the <a> edge dislocations in
model Mg-Al alloys was observed using molecular dynamics simulations.
Dislocations on prismatic and pyramidal I planes climb through the basal plane
to overcome solute obstacles. This out-of-plane dislocation motion softens the
high resistance pyramidal I glide and significantly reduces the anisotropy of
dislocation mobility, and could help improve the ductility of Mg. The flow
stress scales linearly with solute concentration, cAl. Dislocations climb
predominantly in the negative direction, with climb angle on the order of
0.01cAl, producing very high vacancy concentration on the order of 10-4.

35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an