INFLUENCE OF PHASES PRECIPITATION IN β-METASTABLE TI-12MO-XNB ALLOYS
"2022-02-21" // app/Providers/../Base/Publico/Artigo/resources/show_includes/info_artigo.blade.php
App\Base\Administrativo\Model\Artigo {#1843 // app/Providers/../Base/Publico/Artigo/resources/show_includes/info_artigo.blade.php #connection: "mysql" +table: "artigo" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:35 [ "id" => 83326 "edicao_id" => 195 "trabalho_id" => 42 "inscrito_id" => 150 "titulo" => "INFLUENCE OF PHASES PRECIPITATION IN β-METASTABLE TI-12MO-XNB ALLOYS" "resumo" => "TITANIUM AND ITS ALLOYS HAVE BECOME ONE OF THE MOST ATTRACTIVE IMPLANT MATERIALS DUE TO THEIR LIGHT WEIGHT, HIGH BIOCORROSION RESISTANCE, BIOCOMPATIBILITY AND MECHANICAL PROPERTIES, INCLUDING LOWER ELASTIC MODULUS. THE BETA TITANIUM ALLOYS CAN BE CLASSIFIED INTO THREE CATEGORIES, STABLE BETA, METASTABLE BETA AND NEAR BETA , AS FUNCTION OF THE MOLYBDENUM EQUIVALENT [MO EQ]. IF THE [MO EQ] IS LOWER THAN 11 WT. %, MARTENSITIC TRANSFORMATION MAY OCCUR DURING QUENCHING FROM TEMPERATURES ABOVE THE BETA TRANSUS. THE TYPE OF MARTENSITE PHASE FORMED (ALPHA€™ OR ALPHA€™Â€™) DEPEND ON THE SOLUTE CONCENTRATION IN THE TITANIUM ALLOY. THE ALPHA€™ MARTENSITE PHASE FORMS IN DILUTED ALLOYS AND HAS A HCP STRUCTURE, WHILE THE ALPHA€™Â€™ PHASE IS FORMED IN CONCENTRATED ALLOYS WITH AN ORTHORHOMBIC CRYSTAL STRUCTURE . BESIDES, ANOTHER METASTABLE ω PHASE (HCP STRUCTURE) ALSO MAY PRECIPITATE IN THE BETA-TI MATRIX DURING QUENCHING. MECHANICAL PROPERTIES OF METASTABLE β-TI ALLOYS ARE HIGHLY DEPENDENT OF THE FINAL MICROSTRUCTURE WHICH IS CONTROLLED BY THE THERMOMECHANICAL TREATMENTS, IN PARTICULAR THE YOUNG€™S MODULUS. THESE ALLOYS FOR BIOMEDICAL APPLICATION REQUIRE HIGH MECHANICAL STRENGTH AND A LOW YOUNG€™S MODULUS TO AVOID STRESS SHIELDING. THE AIM OF THIS STUDY WAS TO ANALYZE THE INFLUENCE OF PHASES PRECITITATION IN THE TREATED TI-12MO-XNB (X = 0, 3, 8, 13, 17 AND 20) ALLOYS. THE ALLOYS WERE PREPARED FROM PURE ELEMENTS THROUGH ARC MELTING UNDER ARGON. THE OBTAINED INGOTS WERE SOLUTION TREATED AT 950 ºC UNDER ARGON ATMOSPHERE FOR 1 H INTO A TUBULAR FURNACE AND THEN QUENCHED IN WATER AT ROOM TEMPERATURE. THE MICROSTRUCTURES WERE ANALYZED BY TRANSMISSION ELECTRON MICROSCOPY (TEM) AND X-RAY DIFFRACTION (XRD). MECHANICAL PROPERTIES CHARACTERIZATION WAS BASED ON VICKERS MICROHARDNESS TESTS AND YOUNG€™S MODULUS MEASUREMENTS. THE RESULTED OF MICROSTRUCTURAL CHARACTERIZATION SHOWED THE PRESENCE OF α€™Â€™, ω IN THE BETA MATRIX FOR THE TI-12MO ALLOY. THE NB ADDITION RESULTED IN THE SUPPRESSION OF ALPHA€™Â€™ PHASE AND DECREASE OF THE ω PHASE, CONFIRMING THE EFFECT OF €œMO EQ€ ON BETA STABILIZATION. ALTHOUGH THE AMOUNT OF ω PHASE DECREASES FOR HIGHER NB CONTENTS, ω PRECIPITATES WITH A NEAR-SPHERICAL MORPHOLOGY CAN BE OBSERVED ON THIN FOIL OF TI-12MO-20NB ALLOY ALL THE ALLOYS PRODUCED IN THIS STUDY SHOWED POTENTIAL FOR BIOMEDICAL APPLICATION, PRESENTED A HIGHER HARDNESS/MODULUS RATIO THAN TI AND TI-6AL-4V ALLOY. HOWEVER, AMONG THE SIX ALLOYS, CP TI AND TI-6AL-4V ALLOY, THE TI-12MO ALLOY SHOWED A HIGHER HARDNESS/MODULUS RATIO WITH A MICROSTRUCTURE CONSISTING OF α€ + ω PRECIPITATES IN THE β MATRIX." "modalidade" => "Poster" "area_tematica" => "NEW MATERIALS FOR BIOLOGICAL APPLICATIONS" "palavra_chave" => "BIOMATERIALS, METALLIC, MICROSTRUCTURE, PROPERTIES, BIOMEDICAL APPLICATION" "idioma" => "Português" "arquivo" => "TRABALHO_EV170_MD4_SA101_ID150_22112021103330.pdf" "created_at" => "2022-02-16 10:17:52" "updated_at" => null "ativo" => 1 "autor_nome" => "SINARA BORBOREMA" "autor_nome_curto" => "BORBOREMA" "autor_email" => "sinarab@msn.com" "autor_ies" => "UNIVERSIDADE DO ESTADO DO RIO DE JANEIRO" "autor_imagem" => "" "edicao_url" => "anais-do-latin-american-congress-of-artificial-organs-and-biomaterials" "edicao_nome" => "Anais do XI Latin American Congress of Artificial Organs and Biomaterials (COLAOB)" "edicao_evento" => "XI Latin American Congress of Artificial Organs and Biomaterials" "edicao_ano" => 2022 "edicao_pasta" => "anais/colaob/2021" "edicao_logo" => null "edicao_capa" => "61fc15636d9b1_03022022144819.jpg" "data_publicacao" => "2022-02-21" "edicao_publicada_em" => "2022-01-26 10:43:13" "publicacao_id" => 91 "publicacao_nome" => "Revista do Latin American Congresso of Artificial Organs and Biomaterials (COLAOB)" "publicacao_codigo" => "978-65-86901-54-2" "tipo_codigo_id" => 2 "tipo_codigo_nome" => "ISBN" "tipo_publicacao_id" => 1 "tipo_publicacao_nome" => "ANAIS de Evento" ] #original: array:35 [ "id" => 83326 "edicao_id" => 195 "trabalho_id" => 42 "inscrito_id" => 150 "titulo" => "INFLUENCE OF PHASES PRECIPITATION IN β-METASTABLE TI-12MO-XNB ALLOYS" "resumo" => "TITANIUM AND ITS ALLOYS HAVE BECOME ONE OF THE MOST ATTRACTIVE IMPLANT MATERIALS DUE TO THEIR LIGHT WEIGHT, HIGH BIOCORROSION RESISTANCE, BIOCOMPATIBILITY AND MECHANICAL PROPERTIES, INCLUDING LOWER ELASTIC MODULUS. THE BETA TITANIUM ALLOYS CAN BE CLASSIFIED INTO THREE CATEGORIES, STABLE BETA, METASTABLE BETA AND NEAR BETA , AS FUNCTION OF THE MOLYBDENUM EQUIVALENT [MO EQ]. IF THE [MO EQ] IS LOWER THAN 11 WT. %, MARTENSITIC TRANSFORMATION MAY OCCUR DURING QUENCHING FROM TEMPERATURES ABOVE THE BETA TRANSUS. THE TYPE OF MARTENSITE PHASE FORMED (ALPHA€™ OR ALPHA€™Â€™) DEPEND ON THE SOLUTE CONCENTRATION IN THE TITANIUM ALLOY. THE ALPHA€™ MARTENSITE PHASE FORMS IN DILUTED ALLOYS AND HAS A HCP STRUCTURE, WHILE THE ALPHA€™Â€™ PHASE IS FORMED IN CONCENTRATED ALLOYS WITH AN ORTHORHOMBIC CRYSTAL STRUCTURE . BESIDES, ANOTHER METASTABLE ω PHASE (HCP STRUCTURE) ALSO MAY PRECIPITATE IN THE BETA-TI MATRIX DURING QUENCHING. MECHANICAL PROPERTIES OF METASTABLE β-TI ALLOYS ARE HIGHLY DEPENDENT OF THE FINAL MICROSTRUCTURE WHICH IS CONTROLLED BY THE THERMOMECHANICAL TREATMENTS, IN PARTICULAR THE YOUNG€™S MODULUS. THESE ALLOYS FOR BIOMEDICAL APPLICATION REQUIRE HIGH MECHANICAL STRENGTH AND A LOW YOUNG€™S MODULUS TO AVOID STRESS SHIELDING. THE AIM OF THIS STUDY WAS TO ANALYZE THE INFLUENCE OF PHASES PRECITITATION IN THE TREATED TI-12MO-XNB (X = 0, 3, 8, 13, 17 AND 20) ALLOYS. THE ALLOYS WERE PREPARED FROM PURE ELEMENTS THROUGH ARC MELTING UNDER ARGON. THE OBTAINED INGOTS WERE SOLUTION TREATED AT 950 ºC UNDER ARGON ATMOSPHERE FOR 1 H INTO A TUBULAR FURNACE AND THEN QUENCHED IN WATER AT ROOM TEMPERATURE. THE MICROSTRUCTURES WERE ANALYZED BY TRANSMISSION ELECTRON MICROSCOPY (TEM) AND X-RAY DIFFRACTION (XRD). MECHANICAL PROPERTIES CHARACTERIZATION WAS BASED ON VICKERS MICROHARDNESS TESTS AND YOUNG€™S MODULUS MEASUREMENTS. THE RESULTED OF MICROSTRUCTURAL CHARACTERIZATION SHOWED THE PRESENCE OF α€™Â€™, ω IN THE BETA MATRIX FOR THE TI-12MO ALLOY. THE NB ADDITION RESULTED IN THE SUPPRESSION OF ALPHA€™Â€™ PHASE AND DECREASE OF THE ω PHASE, CONFIRMING THE EFFECT OF €œMO EQ€ ON BETA STABILIZATION. ALTHOUGH THE AMOUNT OF ω PHASE DECREASES FOR HIGHER NB CONTENTS, ω PRECIPITATES WITH A NEAR-SPHERICAL MORPHOLOGY CAN BE OBSERVED ON THIN FOIL OF TI-12MO-20NB ALLOY ALL THE ALLOYS PRODUCED IN THIS STUDY SHOWED POTENTIAL FOR BIOMEDICAL APPLICATION, PRESENTED A HIGHER HARDNESS/MODULUS RATIO THAN TI AND TI-6AL-4V ALLOY. HOWEVER, AMONG THE SIX ALLOYS, CP TI AND TI-6AL-4V ALLOY, THE TI-12MO ALLOY SHOWED A HIGHER HARDNESS/MODULUS RATIO WITH A MICROSTRUCTURE CONSISTING OF α€ + ω PRECIPITATES IN THE β MATRIX." "modalidade" => "Poster" "area_tematica" => "NEW MATERIALS FOR BIOLOGICAL APPLICATIONS" "palavra_chave" => "BIOMATERIALS, METALLIC, MICROSTRUCTURE, PROPERTIES, BIOMEDICAL APPLICATION" "idioma" => "Português" "arquivo" => "TRABALHO_EV170_MD4_SA101_ID150_22112021103330.pdf" "created_at" => "2022-02-16 10:17:52" "updated_at" => null "ativo" => 1 "autor_nome" => "SINARA BORBOREMA" "autor_nome_curto" => "BORBOREMA" "autor_email" => "sinarab@msn.com" "autor_ies" => "UNIVERSIDADE DO ESTADO DO RIO DE JANEIRO" "autor_imagem" => "" "edicao_url" => "anais-do-latin-american-congress-of-artificial-organs-and-biomaterials" "edicao_nome" => "Anais do XI Latin American Congress of Artificial Organs and Biomaterials (COLAOB)" "edicao_evento" => "XI Latin American Congress of Artificial Organs and Biomaterials" "edicao_ano" => 2022 "edicao_pasta" => "anais/colaob/2021" "edicao_logo" => null "edicao_capa" => "61fc15636d9b1_03022022144819.jpg" "data_publicacao" => "2022-02-21" "edicao_publicada_em" => "2022-01-26 10:43:13" "publicacao_id" => 91 "publicacao_nome" => "Revista do Latin American Congresso of Artificial Organs and Biomaterials (COLAOB)" "publicacao_codigo" => "978-65-86901-54-2" "tipo_codigo_id" => 2 "tipo_codigo_nome" => "ISBN" "tipo_publicacao_id" => 1 "tipo_publicacao_nome" => "ANAIS de Evento" ] #changes: [] #casts: array:14 [ "id" => "integer" "edicao_id" => "integer" "trabalho_id" => "integer" "inscrito_id" => "integer" "titulo" => "string" "resumo" => "string" "modalidade" => "string" "area_tematica" => "string" "palavra_chave" => "string" "idioma" => "string" "arquivo" => "string" "created_at" => "datetime" "updated_at" => "datetime" "ativo" => "boolean" ] #classCastCache: [] #attributeCastCache: [] #dates: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: false #hidden: [] #visible: [] +fillable: array:13 [ 0 => "edicao_id" 1 => "trabalho_id" 2 => "inscrito_id" 3 => "titulo" 4 => "resumo" 5 => "modalidade" 6 => "area_tematica" 7 => "palavra_chave" 8 => "idioma" 9 => "arquivo" 10 => "created_at" 11 => "updated_at" 12 => "ativo" ] #guarded: array:1 [ 0 => "*" ] }