Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: 3D Characterisation of the Fe-rich intermetallic phases in Al-5%Cu
  alloys by synchrotron X-ray microtomography and skeletonisation   Synchrotron X-ray microtomography and skeletonisation method were used to
study the true 3D network structures and morphologies of the Fe-rich
intermetallic phases in Al-5.0%Cu-0.6%Mn alloys with 0.5% and 1.0% Fe. It was
found that, the Fe-phases in the 1.0%Fe alloy have node lengths of 5-25m; while
those in the 0.5%Fe alloy are of 3-17 m. The Fe-phases in the 1.0%Fe alloy also
developed sharper mean curvature with wider distribution than those in the
0.5%Fe alloy. Combining SEM studies of the deeply-etched samples, the true 3D
structures of 4 different type Fe-phases in both alloys are also revealed and
demonstrated.

36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th