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Ceramic-Reinforced γ-TiAl-Based Composites: Synthesis, Structure, and Properties
In this study, new multilayer TiAl-based composites were developed and characterized. The materials were produced by spark plasma sintering (SPS) of elemental Ti and Al foils and ceramic particles (TiB(2) and TiC) at 1250 °C. The matrix of the composites consisted of α(2)-TiAl and γ-TiAl lamellas an...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6416548/ https://www.ncbi.nlm.nih.gov/pubmed/30791527 http://dx.doi.org/10.3390/ma12040629 |
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author | Lazurenko, Daria V. Stark, Andreas Esikov, Maksim A. Paul, Jonathan Bataev, Ivan A. Kashimbetova, Adelya A. Mali, Vyacheslav I. Lorenz, Uwe Pyczak, Florian |
author_facet | Lazurenko, Daria V. Stark, Andreas Esikov, Maksim A. Paul, Jonathan Bataev, Ivan A. Kashimbetova, Adelya A. Mali, Vyacheslav I. Lorenz, Uwe Pyczak, Florian |
author_sort | Lazurenko, Daria V. |
collection | PubMed |
description | In this study, new multilayer TiAl-based composites were developed and characterized. The materials were produced by spark plasma sintering (SPS) of elemental Ti and Al foils and ceramic particles (TiB(2) and TiC) at 1250 °C. The matrix of the composites consisted of α(2)-TiAl and γ-TiAl lamellas and reinforcing ceramic layers. Formation of the α(2) + γ structure, which occurred via a number of solid–liquid and solid–solid reactions and intermediate phases, was characterized by in situ synchrotron X-ray diffraction analysis. The combination of X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and energy dispersive X-ray (EDX) analysis revealed that an interaction of TiC with Ti and Al led to the formation of a Ti(2)AlC M(n+1)AX(n) (MAX) phase. No chemical reactions between TiB(2) and the matrix elements were observed. The microhardness, compressive strength, and creep behavior of the composites were measured to estimate their mechanical properties. The orientation of the layers with respect to the direction of the load affected the compressive strength and creep behavior of TiC-reinforced composites. The compressive strength of samples loaded in the perpendicular direction to layers was higher; however, the creep resistance was better for composites loaded in the longitudinal direction. The microhardness of the composites correlated with the microhardness of reinforcing components. |
format | Online Article Text |
id | pubmed-6416548 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-64165482019-03-29 Ceramic-Reinforced γ-TiAl-Based Composites: Synthesis, Structure, and Properties Lazurenko, Daria V. Stark, Andreas Esikov, Maksim A. Paul, Jonathan Bataev, Ivan A. Kashimbetova, Adelya A. Mali, Vyacheslav I. Lorenz, Uwe Pyczak, Florian Materials (Basel) Article In this study, new multilayer TiAl-based composites were developed and characterized. The materials were produced by spark plasma sintering (SPS) of elemental Ti and Al foils and ceramic particles (TiB(2) and TiC) at 1250 °C. The matrix of the composites consisted of α(2)-TiAl and γ-TiAl lamellas and reinforcing ceramic layers. Formation of the α(2) + γ structure, which occurred via a number of solid–liquid and solid–solid reactions and intermediate phases, was characterized by in situ synchrotron X-ray diffraction analysis. The combination of X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and energy dispersive X-ray (EDX) analysis revealed that an interaction of TiC with Ti and Al led to the formation of a Ti(2)AlC M(n+1)AX(n) (MAX) phase. No chemical reactions between TiB(2) and the matrix elements were observed. The microhardness, compressive strength, and creep behavior of the composites were measured to estimate their mechanical properties. The orientation of the layers with respect to the direction of the load affected the compressive strength and creep behavior of TiC-reinforced composites. The compressive strength of samples loaded in the perpendicular direction to layers was higher; however, the creep resistance was better for composites loaded in the longitudinal direction. The microhardness of the composites correlated with the microhardness of reinforcing components. MDPI 2019-02-20 /pmc/articles/PMC6416548/ /pubmed/30791527 http://dx.doi.org/10.3390/ma12040629 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Lazurenko, Daria V. Stark, Andreas Esikov, Maksim A. Paul, Jonathan Bataev, Ivan A. Kashimbetova, Adelya A. Mali, Vyacheslav I. Lorenz, Uwe Pyczak, Florian Ceramic-Reinforced γ-TiAl-Based Composites: Synthesis, Structure, and Properties |
title | Ceramic-Reinforced γ-TiAl-Based Composites: Synthesis, Structure, and Properties |
title_full | Ceramic-Reinforced γ-TiAl-Based Composites: Synthesis, Structure, and Properties |
title_fullStr | Ceramic-Reinforced γ-TiAl-Based Composites: Synthesis, Structure, and Properties |
title_full_unstemmed | Ceramic-Reinforced γ-TiAl-Based Composites: Synthesis, Structure, and Properties |
title_short | Ceramic-Reinforced γ-TiAl-Based Composites: Synthesis, Structure, and Properties |
title_sort | ceramic-reinforced γ-tial-based composites: synthesis, structure, and properties |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6416548/ https://www.ncbi.nlm.nih.gov/pubmed/30791527 http://dx.doi.org/10.3390/ma12040629 |
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