STRUCTURAL AND MICROESTRUCTURAL CHARACTERIZATION OF AlTi TITANIUM - BASE ALUMINIUM ALLOYS.
The structural and microstructural characterization by means of X-ray diffraction (XRD) of the aluminum-titanium alloys (AlTi, 0.5 ≤ x ≤ 0:20) is presented. The analysis showed the occurrence of an order-disorder phase transition in the studied compositional range. The presence of a minor fcc phase...
| Published in: | Revista Cubana de Física Vol. 39; no. 1; pp. 37 - 44 |
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| Main Authors: | , , , |
| Format: | Article |
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Universidad de La Habana
jul2022
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| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=lth&AN=158052310&site=ehost-live header: @attributes: shortDbName: lth uiTerm: 158052310 longDbName: MedicLatina uiTag: AN controlInfo: bkinfo: jinfo: jid: 02539268 UEW jtl: Revista Cubana de Física issn: 02539268 maglogo: N pubinfo: dt: jul2022 vid: 39 iid: 1 pid: 21208 pub: Universidad de La Habana artinfo: ui: 158052310 ppf: 37 ppct: 7 formats: fmt: @attributes: type: P size: 1MB tig: atl: STRUCTURAL AND MICROESTRUCTURAL CHARACTERIZATION OF AlTi TITANIUM - BASE ALUMINIUM ALLOYS. aug: au: PENTÓN-MADRIGAL, A. DOS SANTOS-BRANCO, A. CONCEPCIÓN-ROSABAL, B. DE OLIVEIRA, L. A. S. affil: Facultad de Física - IMRE, Universidad de La Habana, San Lazaro y L, C. Habana, CP 10400, Cuba Instituto de Ciencia y Tecnología de Materiales - IMRE, Universidad de La Habana, San Lazaro y L, C. Habana, CP 10400 Núcleo Multidisciplinar de Pesquisas em Nanotecnoligia, Campus Prof. Geraldo Cidade, Universidade Federal do Rio de Janeiro, Rodovia Washington Luiz, km 105. 25240-005, Duque de Caxias, RJ, Brazil su: Crystal structure Face centered cubic structure Titanium X-ray diffraction Aluminum Phase transitions Microstructure Order-disorder transitions Crystal defects Alloys sug: subj: Crystal structure Face centered cubic structure Titanium X-ray diffraction Aluminum Phase transitions Microstructure Order-disorder transitions Crystal defects Alloys ab: The structural and microstructural characterization by means of X-ray diffraction (XRD) of the aluminum-titanium alloys (AlTi, 0.5 ≤ x ≤ 0:20) is presented. The analysis showed the occurrence of an order-disorder phase transition in the studied compositional range. The presence of a minor fcc phase within the hcp matrix of the AlTialloy showed evidence of the presence of stacking faults. The probability of occurrence of this type of defect depends on the chemical composition and on the distance between atomic layers (order parameter). The microstructural analysis using the Warren-Averbach and Williamson-Hall methods shows that a decrease of Al content not only decreases the probability of occurrence of planar defects but also leads to a decrease in the average crystallite size and to an increase of the average non uniform microstrain value in the alloy. Deformation defects (α) predominate in this type of alloy. Se presentala caracterización estructural y microestructural de aleaciones de aluminio - titanio (AlTi, 0.5 ≤ x ≤ 0.20) por medio de la técnica de difracción de rayos-X (DRX). El análisis mostró la ocurrencia de una transición de fase orden - desorden en el rango de composición estudiado. La presencia de una fase minoritaria fcc en la matriz hcp de la aleación AlTi mostró evidencia de la presencia de defectos de apilado, cuya probabilidad de ocurrencia depende de la composición química y la distancia entre capas atómicas (parámetro de orden). El análisis microestructural usando los métodos de Warren-Averbach y Williamson-Hall mostró que unadisminución del contenido de Al, no solo disminuye la probabilidad de ocurrencia de defectos planares sino que propicia una disminución del tamaño promedio de cristalitas y aun aumento del valor medio de la microdeformación no uniforme en la aleación. Los defectos de deformación (α) predominan en este tipo de aleación. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y custom: Copyright of Revista Cubana de Física is the property of Universidad de La Habana and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. item: Revista Cubana de Física holder: Universidad de La Habana dt: @attributes: year: 2022 holdings: @attributes: islocal: N |
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