Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Molecular dynamics simulation of Ga penetration along Al grain
  boundaries under a constant strain rate condition   While diverse fracture characteristics have been observed in liquid metal
embrittlement (LME) depending on the solid-liquid metal pairs, the penetration
of nanometer-thick liquid metal films along the grain boundary has been
identified as one of the key mechanisms for embrittlement in many classical LME
systems, such as Al-Ga, Cu-Bi and Ni-Bi. For example, liquid Ga quickly
penetrates deep into grain boundaries in Al, leading to intergranular fracture
under very small stresses. We report on a series of molecular dynamics
simulations of liquid Ga in contact with an Al bicrystal under a constant
strain rate. We identify the grain boundary dislocations that are nucleated at
the grain boundary groove tip and climb down along the grain boundary during Ga
penetration and characterize their atomic structures based on topological
method.

30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org