N–Ti system

9 accepted literature values from 2 paper(s) (experimental 1, model 8); 0 calculated phase diagram(s). 16 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

Data: JSON · CSV · interactive explorer · phases (10) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	1
model	8

Accepted values by property group
Property group	Values
invariant reaction	7
phase transition	1
other property	1

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull TiN-08And-B · CALPHAD hull TiN-90Oht · CALPHAD hull TiN-91Vah · CALPHAD hull TiN-96Jon-LB · CALPHAD hull TiN-96Zen

Invariant reactions (literature)

Invariant reactions reported in the literature for the N–Ti system (7)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
2618	peritectic: Liquid + fcc-A1* -> hcp-A3	L: Ti 0.882; fcc-A1*: Ti 0.695; hcp-A3: Ti 0.793	model	[1] (ed.) 1998	Table I, p. 271, row 6 report
2268.6	peritectic: Liquid + hcp-A3 -> bcc-A2	L: Ti 0.967; hcp-A3: Ti 0.863; bcc-A2: Ti 0.932	model	[1] (ed.) 1998	Table I, p. 271, row 7 report
1551.1	peritectoid: fcc-A1 + hcp-A3 -> Ti4N3	fcc-A1: Ti 0.673; hcp-A3: Ti 0.784; Ti4N3: Ti 0.685	model	[1] (ed.) 1998	Table I, p. 271, row 1 report
1376.8	peritectoid: Ti4N3 + hcp-A3 -> Ti3N2	Ti4N3: Ti 0.685; hcp-A3: Ti 0.784; Ti3N2: Ti 0.71	model	[1] (ed.) 1998	Table I, p. 271, row 2 report
1354.8	peritectoid: fcc-A1* + Ti3N2 -> Ti2N	fcc-A1*: Ti 0.658; Ti3N2: Ti 0.685; Ti2N: Ti 0.667	model	[1] (ed.) 1998	Table I, p. 271, row 5 report
1348.5	eutectoid: Ti4N3 -> Ti2N + Ti3N2	Ti4N3: Ti 0.685; Ti2N: Ti 0.667; Ti3N2: Ti 0.71	model	[1] (ed.) 1998	Table I, p. 271, row 4 report
1336.2	eutectoid: Ti3N2 -> Ti2N + hcp-A3	Ti3N2: Ti 0.71; Ti2N: Ti 0.667; hcp-A3: Ti 0.787	model	[1] (ed.) 1998	Table I, p. 271, row 3 report

Other properties

Phase transition (1)

Phase transition, N–Ti system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Phase transition	3585 K	3585	congruent melting: fcc-A1 -> Liquid fcc-A1: Ti 0.533; L: Ti 0.541	model	[1] (ed.) 1998	Table I, p. 271, row 8 report

Other property (1)

Other property, N–Ti system
Property	Value	T (K)	Phases / composition	Class	Source	Location	Quote
Other printed: heat of combustion	-40.235 kcal/mole	298.15		experimental	[2] Ohtani 1990	p. 6 report	The heat of combustion of stoichiometric TiN was determined by Neumann et a1.(26) and Humphrey(27) who gave the values of -4O.l5kcal/mole and -40.235kcal/mole at 298K, respectively.

Sources

Reporting papers the values were read from (a value cited from another work names that work in its row).

I. Ansara, A. T. Dinsdale, M. H. Rand (eds.), COST 507: Thermochemical database for light metal alloys, Volume 2, EUR 18499 EN, Office for Official Publications of the European Communities, Luxembourg (1998), ISBN 92-828-3902-8.
H. Ohtani, M. Hillert, A thermodynamic assessment of the Ti-N system, Calphad 14, 289-306 (1990). doi:10.1016/0364-5916(90)90029-y

Please cite

R. Arróyave, J. Saal, D. Shin, ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23735569
R. Arróyave, J. Saal, D. Shin, ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD) (version 2026.10), Zenodo (2026). doi:10.5281/zenodo.23735891
R. Arróyave, J. Saal, D. Shin, ORCHID data: umbrella record of the ORCHID datasets (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23736065

Also cite the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work); A. Jain et al., The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013) 011002, https://doi.org/10.1063/1.4812323 (CC BY 4.0); J. E. Saal et al., JOM 65 (2013) 1501, https://doi.org/10.1007/s11837-013-0755-4 and S. Kirklin et al., npj Comput. Mater. 1 (2015) 15010, https://doi.org/10.1038/npjcompumats.2015.10 (CC BY 4.0); B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, https://doi.org/10.1016/j.calphad.2025.102833 (CC BY 4.0), and the original assessment named in each file. Version 1, machine-extracted: values were read by language-model readers constrained to quote their source and checked automatically, and the release was then audited on the printed pages by adversarial audits, an independent second review of fit-facing records and a preliminary human review of a frozen sample. Flags such as accepted and ESPEI-ready record screening results, not certification; known issues are listed in the release notes.

@misc{orchid_literature_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735569},
  url       = {https://doi.org/10.5281/zenodo.23735569},
  note      = {Version 1, machine-extracted}
}

@misc{orchid_hulls_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD)}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735891},
  url       = {https://doi.org/10.5281/zenodo.23735891}
}

@misc{orchid_data_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID data: umbrella record of the ORCHID datasets}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23736065},
  url       = {https://doi.org/10.5281/zenodo.23736065},
  note      = {Version 1, machine-extracted}
}