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Record W4386411217 · doi:10.5151/2594-5327-39902

AVALIAÇÃO DA FASE SIGMA E DE LAVES EM UM AÇO INOXIDÁVEL AUSTENO-FERRÍTICO MODIFICADO COM NIÓBIO POR MEIO DO SOFTWARE FACTSAGE

2023· article· pt· W4386411217 on OpenAlexaff
André Itman Filho, Karen Farias Cirilo, Pedro Henrique Lauret do Espirito Santo, Felipe Fardin Grillo, Rosana Vilarim da Silva

Bibliographic record

VenueABM Proceedings · 2023
Typearticle
Languagept
FieldEngineering
TopicMicrostructure and Mechanical Properties of Steels
Canadian institutionsDiscovery Air (Canada)
Fundersnot available
KeywordsPhysicsHumanitiesCrystallographyMaterials scienceChemistryPhilosophy

Abstract

fetched live from OpenAlex

PDF | O objetivo dessa pesquisa foi avaliar o efeito do nióbio em um aço inoxidável austeno-ferrítico convencional e modificado com 0,5% de nióbio na condição solubilizada e após aquecimento a 650 ºC durante uma hora. Foram feitas observações das microestruturas por meio de microscopia eletrônica de varredura (MEV). As composições químicas de sigma e Laves foram determinadas qualitativamente via energia dispersiva de raios X (EDS). É importante ressaltar a dificuldade em identificar os diferentes precipitados formados no resfriamento dos austeno-ferríticos com microscópios óticos e eletrônicos convencionais. Nesse contexto e para determinar as fases formadas nesses aços foi utilizada a simulação termodinâmica computacional com o software FactSage. Os resultados mostram que a simulação termodinâmica permite identificar vários precipitados. Com relação às análises microestruturais é possível observar a presença da fase sigma no austeno-ferrítico convencional somente após aquecimento, enquanto Laves aparece no modificado com nióbio nas duas condições. Fica evidente o efeito do nióbio na formação dessa fase com relação à sigma, pois o elemento tem pouca solubilidade na austenita. Conforme a literatura, sigma e Laves proporcionam um acréscimo na dureza da matriz e o nióbio nos inoxidáveis austeno-ferríticos é recomendável, quando a resistência ao desgaste é um fator importante a ser considerado.

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: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.006
Threshold uncertainty score0.020

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.001
Science and technology studies0.0000.000
Scholarly communication0.0010.001
Open science0.0000.000
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0060.001

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 head0.032
GPT teacher head0.246
Teacher spread0.214 · 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

Citations0
Published2023
Admission routes1
Has abstractyes

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