Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the influence of alloy composition on the additive manufacturability
  of Ni-based superalloys   The susceptibility of nickel-based superalloys to processing-induced crack
formation during laser powder-bed additive manufacturing is studied. Twelve
different alloys -- some of existing (heritage) type but also other
newly-designed ones -- are considered. A strong inter-dependence of alloy
composition and processability is demonstrated. Stereological procedures are
developed to enable the two dominant defect types found -- solidification
cracks and solid-state ductility dip cracks -- to be distinguished and
quantified. Differential scanning calorimetry, creep stress relaxation tests at
1000$^\circ$C and measurements of tensile ductility at 800$^\circ$C are used to
interpret the effects of alloy composition. A model for solid-state cracking is
proposed, based on an incapacity to relax the thermal stress arising from
constrained differential thermal contraction; its development is supported by
experimental measurements using a constrained bar cooling test. A modified
solidification cracking criterion is proposed based upon solidification range
but including also a contribution from the stress relaxation effect. This work
provides fundamental insights into the role of composition on the additive
manufacturability of these materials.

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The categories of this paper are: mtrl-th
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The categories of this paper are: solv-int
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The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics
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The categories of this paper are: chem-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: comp-gas
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The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
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The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
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The categories of this paper are: eess
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The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
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The categories of this paper are: acc-phys