Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Uncharacteristic second order martensitic transformation in metals via
  epitaxial stress fields   While most phase transformations, e.g. ferroelectric or ferromagnetic, can be
first or second order depending on external applied fields, martensitic
transformations in metallic alloys are nearly universally first order. We
demonstrate that epitaxial stress originating from the incorporation of a
tailored second phase can modify the free energy landscape that governs the
phase transition and change its order from first to second. High-fidelity
molecular dynamics simulations show a remarkable change in the character of the
martensitic transformation in Ni-Al alloys near the critical point. We observe
the continuous evolution of the transformation order parameter and scaling with
power-law exponents comparable to those in other ferroic transitions exhibiting
critical behavior. Our theoretical work provides a foundation to recent
experimental and computational results on martensites near critical points.

6
The categories of this paper are: astro-ph
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The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
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The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
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The categories of this paper are: adap-org
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th