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Record W2071177498 · doi:10.1179/cmq.2005.44.4.523

THERMODYNAMIC MODELLING OF THE Mg-Al-Ca SYSTEM

2005· article· en· W2071177498 on OpenAlexafffund
Ф. Ислам, Mamoun Medraj

Bibliographic record

VenueCanadian Metallurgical Quarterly · 2005
Typearticle
Languageen
FieldMaterials Science
TopicMetallurgical and Alloy Processes
Canadian institutionsConcordia University
FundersNatural Sciences and Engineering Research Council of Canada
KeywordsGibbs free energyThermodynamicsPhase diagramTernary operationChemistryTernary numeral systemBase (topology)Phase (matter)Phase equilibriumPhysical chemistryPhysicsMathematics

Abstract

fetched live from OpenAlex

In this study, the ternary Mg-Al-Ca phase diagram was constructed by combining the three constituent binary systems of Mg-Al, Al-Ca and Mg-Ca. The Mg-Al system is taken from COST 507 database. The thermodynamic descriptions of the Mg-Ca and Al-Ca systems are obtained by modelling the Gibbs energy of all phases as a function of composition and temperature. The model parameters were optimized by minimizing Gibbs energy considering phase equilibria and thermodynamic data available in the literature. A self-consistent thermodynamic database was constructed with the optimized parameters of the three subsystems. The binary phase diagrams, their thermodynamic properties, the ternary phase diagram and the critical points were calculated from this database and compared with experimental results from the literature.Dans cette étude, on a construit le diagramme de phase ternaire Mg-Al-Ca en combinant les trois systèmes binaires constituants de Mg-Al, Al-Ca et Mg-Ca. Le système Mg-Al provient de la base de données COST 507. On a obtenu les descriptions thermodynamiques des systèmes Mg-Ca et Al-Ca en modélisant l’énergie de Gibbs de toutes les phases en fonction de la composition et de la température. On a optimisé les paramètres du modèle en minimisant l’énergie de Gibbs, en considérant les équilibres de phase et les données thermodynamiques disponibles dans la littérature. On a construit une base de données thermodynamiques auto-consistantes avec les paramètres optimisés des trois sous-systèmes. On a calculé les diagrammes de phase binaires, leurs propriétés thermodynamiques, le diagramme de phase ternaire et les points critiques à partir de cette base de données et on les a comparés aux résultats expérimentaux de la littérature.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.009
Threshold uncertainty score0.017

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0010.001
Science and technology studies0.0010.000
Scholarly communication0.0010.001
Open science0.0010.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0030.001

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.017
GPT teacher head0.202
Teacher spread0.185 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designSimulation or modeling
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations19
Published2005
Admission routes2
Has abstractyes

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