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Metals
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Intermetallic-Based Materials and Composites
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Intermetallic-Based Materials and Composites

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Matrix Composites".

Deadline for manuscript submissions: closed (30 September 2023) | Viewed by 7969

Special Issue Editor

Dr. Daria V Lazurenko

E-Mail Website
Guest Editor
Materials Sience Department, Novosibirsk State Technical University, Novosibirsk, Novosibirsl, 630073, Russian Federation
Interests: Ti-based alloys; Ti-Al intermetallics; multilayered composites; phase transformations; non-equilibrium structures; diffraction analysis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In recent decades, intermetallic-based alloys and composites have attracted more and more attention from the research society and industry. These materials possess superior physical and mechanical characteristics to traditional materials, including high specific properties, corrosion resistance, and exceptional high-temperature behavior.  

The development of novel intermetallic alloys and intermetallic-based composites is associated with the search for appropriate composition, providing the required properties and a choice of beneficial matrix and reinforcment combinations.

This Special Issue focuses on the new solutions in the field of intermetallics and composites with intermetallic matrices and metal-matrix materials with intermetallic reinforcement. We welcome reviews and articles in the areas of alloy design, formulation of composite structures, manufacturing aspects, and characterization of novel materials with regard to the structure–properties relationship.

Dr. Daria V Lazurenko
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Metals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • intermetallics
  • intermetallic-matrix composites
  • intermetallic reinforcement
  • multilayer structures
  • microstructural characterization
  • specific properties
  • high-temperature behavior
  • physical and chemical properties

Published Papers (6 papers)

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Research

13 pages, 7039 KiB  
Article
Structure and Properties of WC-Fe-Ni-Co Nanopowder Composites for Use in Additive Manufacturing Technologies
by Maksim Krinitcyn, Natalia V. Svarovskaya, Nikolay Rodkevich, Egor Ryumin and Marat Lerner
Metals 2024, 14(2), 167; https://doi.org/10.3390/met14020167 - 29 Jan 2024
Viewed by 1082
Abstract
In this work, the samples of the WC-Fe-Ni-Co composition were obtained and studied. Alloy NiCo 29-18 is used as a binder (Fe-Ni-Co). In this paper, a comparative analysis of the samples obtained using commercial micron-sized WC powder and the samples obtained is carried [...] Read more.
In this work, the samples of the WC-Fe-Ni-Co composition were obtained and studied. Alloy NiCo 29-18 is used as a binder (Fe-Ni-Co). In this paper, a comparative analysis of the samples obtained using commercial micron-sized WC powder and the samples obtained is carried out using nano-WC synthesized via the electric explosion of wire (EEW) method. The samples were subjected to vacuum sintering, then their structure, density, and porosity, as well as microhardness and oxidation resistance, were studied. Five different additives were used to stabilize sintering: VC, Cr3C2, NbC, Y2O3, and Nd2O3. All these additives are described in the literature as additives that are used in the sintering of materials of the WC-Co system. Also, the samples from the WC-Fe-Ni-Co material were obtained using additive manufacturing technology with material extrusion. Bending strength and hardness of the additively fabricated samples were determined. Full article
(This article belongs to the Special Issue Intermetallic-Based Materials and Composites)
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0 pages, 3732 KiB  
Article
Achieving High Self-Lubricating Performance of Al-Bi-Sm-Ti Alloys Based on the Intermetallic Compounds
by Tiannan Man, Lin Zhang, Zhisheng Nong, Shaowei Lu and Engang Wang
Metals 2023, 13(11), 1836; https://doi.org/10.3390/met13111836 - 1 Nov 2023
Viewed by 924
Abstract
Al-Bi immiscible alloys, as wear resistance material, have attracted increasing attention in the past. The solidification processing of alloys plays a significant role in the final solidification microstructure and properties of immiscible alloys. Here, we present a strategy to produce a homogeneous microstructure [...] Read more.
Al-Bi immiscible alloys, as wear resistance material, have attracted increasing attention in the past. The solidification processing of alloys plays a significant role in the final solidification microstructure and properties of immiscible alloys. Here, we present a strategy to produce a homogeneous microstructure in Al-Bi alloys based on intermetallic compounds. With the addition of Sm and Ti, the effect on the microstructure and properties was discussed in detail. The Al-Bi-Sm-Ti alloys achieve high self-lubricating performance, referring to the values of the coefficient of friction and wear rate. The intermetallic compounds formed were regarded as the main anti-friction and anti-wear factors. The results of numerical simulation indicate that microsegregation in Al-Bi alloys was retarded based on the intermetallic compounds. The coefficient of friction of the Al-Bi-1Sm-2Ti alloy was 46.2% lower than that of the Al-Bi alloys at 300 m. This research provides a new perspective and guidance for designing and fabricating composites with superior self-lubricating properties. Full article
(This article belongs to the Special Issue Intermetallic-Based Materials and Composites)
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12 pages, 2806 KiB  
Article
Explanatory Machine Learning Accelerates the Design of Graphene-Reinforced Aluminium Matrix Composites with Superior Performance
by Jingteng Xue, Jingtao Huang, Mingwei Li, Jiaying Chen, Zongfan Wei, Yuan Cheng, Zhonghong Lai, Nan Qu, Yong Liu and Jingchuan Zhu
Metals 2023, 13(10), 1690; https://doi.org/10.3390/met13101690 - 4 Oct 2023
Cited by 1 | Viewed by 1145
Abstract
Addressing the exceptional properties of aluminium alloy composites reinforced with graphene, this study presents an interpretable machine learning approach to aid in the rapid and efficient design of such materials. Initially, data on these composites were gathered and optimised in order to create [...] Read more.
Addressing the exceptional properties of aluminium alloy composites reinforced with graphene, this study presents an interpretable machine learning approach to aid in the rapid and efficient design of such materials. Initially, data on these composites were gathered and optimised in order to create a dataset of composition/process-property. Several machine learning algorithms were used to train various models. The SHAP method was used to interpret and select the best performing model, which happened to be the CatBoost model. The model achieved accurate predictions of hardness and tensile strength, with coefficients of determination of 0.9597 and 0.9882, respectively, and average relative errors of 6.02% and 5.01%, respectively. The results obtained from the SHAP method unveiled the correlation between the composition, process and properties of aluminium alloy composites reinforced with graphene. By comparing the predicted and experimental data in this study, all machine learning models exhibited prediction errors within 10%, confirming their ability to generalise. This study offers valuable insights and support for designing high-performance aluminium matrix composites reinforced with graphene and showcases the implementation of machine learning in materials science. Full article
(This article belongs to the Special Issue Intermetallic-Based Materials and Composites)
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13 pages, 8342 KiB  
Article
Simultaneous Improvement in Strength and Ductility of TC4 Matrix Composites Reinforced with Ti1400 Alloy and In Situ-Synthesized TiC
by Ni He, Mingjia Li, Guodong Sun, Junjie Xu, Mingyang Li, Longlong Dong and Yusheng Zhang
Metals 2023, 13(5), 965; https://doi.org/10.3390/met13050965 - 16 May 2023
Cited by 3 | Viewed by 1382
Abstract
To overcome the tradeoff between strength and ductility of materials and obtain titanium matrix composites with excellent mechanical properties, in this study, the in situ-synthesized TiC particles and Ti-Al-V-Mo-Cr (Ti1400) alloy-reinforced Ti6Al4V (TC4) matrix composites ((Ti1400 + TiC)/TC4) were fabricated by low-energy ball [...] Read more.
To overcome the tradeoff between strength and ductility of materials and obtain titanium matrix composites with excellent mechanical properties, in this study, the in situ-synthesized TiC particles and Ti-Al-V-Mo-Cr (Ti1400) alloy-reinforced Ti6Al4V (TC4) matrix composites ((Ti1400 + TiC)/TC4) were fabricated by low-energy ball milling and spark plasma sintering. The inhomogeneous distribution of TiC particles and Ti1400 alloy, as well as the compositional and structural transition zone, were characterized. The TiC/TC4 composite displayed a significantly higher yield strength and tensile strength compared to the TC4 alloy. However, the total elongation of the TiC/TC4 composite was only 57% of that in the TC4 alloy. In contrast, the (Ti1400 + TiC)/TC4 composites exhibited noticeably higher total elongation than the TiC/TC4 composite. Furthermore, the tensile strength of the composite increased with the increase in Ti1400 alloy content. The increase in strength can be attributed to solid solution strengthening and fine grain strengthening. The compositional and structural transition zone, formed by element diffusion, provided a better interface combination between the reinforcements and TC4 matrix. In the transition zone and Ti1400 region, a large number of α/β interfaces can effectively alleviate the stress concentration, and the increase in the β phase can bear more plastic deformation, which is conducive to improving the elongation of the composite. As a result, the (Ti1400 + TiC)/TC4 composites exhibited simultaneous improvements in strength and ductility. Full article
(This article belongs to the Special Issue Intermetallic-Based Materials and Composites)
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10 pages, 1541 KiB  
Article
Peculiarities of the Electro- and Magnetotransport in Semimetal MoTe2
by Alexandra N. Perevalova, Sergey V. Naumov and Vyacheslav V. Marchenkov
Metals 2022, 12(12), 2089; https://doi.org/10.3390/met12122089 - 6 Dec 2022
Cited by 1 | Viewed by 1345
Abstract
Weyl semimetal MoTe2 single crystal was grown by the chemical vapor transport method. Electrical resistivity, magnetoresistivity, and Hall effect in MoTe2 were studied in detail. It was shown that both the electrical resistivity in the absence of a magnetic field and [...] Read more.
Weyl semimetal MoTe2 single crystal was grown by the chemical vapor transport method. Electrical resistivity, magnetoresistivity, and Hall effect in MoTe2 were studied in detail. It was shown that both the electrical resistivity in the absence of a magnetic field and the conductivity in the field depend on temperature according to a quadratic law in a wide temperature range. It has been suggested that the quadratic temperature dependence of the conductivity in a magnetic field at low temperatures might be associated with the “electron-phonon-surface” interference scattering mechanism. The analysis of data on the Hall effect in MoTe2 was carried out using single-band and two-band models. Apparently, the two-band model is preferable in such systems containing different groups of current carriers. Full article
(This article belongs to the Special Issue Intermetallic-Based Materials and Composites)
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20 pages, 7161 KiB  
Article
Structure and Oxidation Behavior of NiAl-Based Coatings Produced by Non-Vacuum Electron Beam Cladding on Low-Carbon Steel
by Tatiana S. Ogneva, Alexey A. Ruktuev, Daria V. Lazurenko, Kemal I. Emurlaev, Yulia N. Malyutina, Mikhail G. Golkovsky, Kirill D. Egoshin and Ivan A. Bataev
Metals 2022, 12(10), 1679; https://doi.org/10.3390/met12101679 - 8 Oct 2022
Cited by 5 | Viewed by 1440
Abstract
NiAl-based intermetallic coatings were obtained using non-vacuum electron beam cladding on low-carbon steel. The structure of the coatings was investigated using optical microscopy, scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), electron backscatter diffraction (EBSD), and X-ray diffraction (XRD). The coatings mostly [...] Read more.
NiAl-based intermetallic coatings were obtained using non-vacuum electron beam cladding on low-carbon steel. The structure of the coatings was investigated using optical microscopy, scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), electron backscatter diffraction (EBSD), and X-ray diffraction (XRD). The coatings mostly consisted of grains elongated perpendicular to the substrates, with a strong <100> texture along the grain growth direction. The coatings contained about 14 at. % Fe, which appeared due to the partial melting of the steel substrate. At the bottom of the coatings, an inhomogeneous mixing zone with an increased concentration of Fe was formed; at the “substrate–coating” interface, a thick layer with a Fe50-Ni25-Al25 at. % composition was observed. The samples exhibited weight gains of 0.1, 0.8, 2.14, and 3.4 mg/cm2 after 100 h of oxidation at 700, 800, 900, and 1000 °C, respectively. The oxide layer contained α-Al2O3 and θ-Al2O3, and the presence of iron atoms contributed to the formation of a small amount of spinel. During the oxidation process, a layer with a high Fe content (~60 at. %) formed along the boundary between the oxide film and the NiAl-based material, which had a positive effect on the formation of a non-porous “oxide–coating” interface. Full article
(This article belongs to the Special Issue Intermetallic-Based Materials and Composites)
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