Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Domain structures and the transitional state of ordering in long-period
  stacking ordered (LPSO) structures in Mg-Al-Gd alloy   The transitional state of ordering in the long-period stacking ordered (LPSO)
structure in Mg-Al-Gd alloy has been investigated by scanning transmission
electron microscopy. It is found that the domains are the origin of observed
transitional state. Three new patterns of clusters at this state can be fully
explained by the superimposition of L12 type clusters located in different
domains. The domains are further verified by different tilted views. Growth of
preferred domains during ageing process will result in final ordered LPSO
structure. Based on the idea of domains, less ordered LPSO structure in other
dilute alloys can be also understood.

22
The categories of this paper are: chao-dyn
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci