Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effect of alloying and microstructure on formability of advanced
  high-strength steels processed via quenching and partitioning   The article focuses on the effect of alloying and microstructure on
formability of advanced high strength steels (AHSSs) processed via quenching
and partitioning (Q&P). Three different Q&P steels with different combination
of alloying elements and volume fraction of retained austenite are subjected to
uniaxial tensile and Nakajima testing. Tensile mechanical properties are
determined, and the forming limit diagrams (FLDs) are plotted. Microstructure
of the tested samples is analyzed, and dramatic reduction of retained austenite
fraction is detected. It is demonstrated that all steels are able to accumulate
much higher amount of plastic strain when tested using Nakajima method. The
observed phenomenon is related to the multiaxial stress state and strain
gradients through the sheet thickness resulting in a fast transformation of
retained austenite, as well as the ability of the tempered martensitic matrix
to accumulate plastic strain. Surprisingly, a Q&P steel with the highest volume
fraction of retained austenite and highest tensile ductility shows the lowest
formability among studied grades. The latter observation is related to the
highest sum of fractions of initial fresh martensite and stress/strain induced
martensite promoting formation of microcracks. Their role and ability of
tempered martensitic matrix to accumulate plastic deformation during forming of
Q&P steels is discussed.

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The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
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The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th