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Special Issue "In Situ Metal Matrix Composites: Theory and Applications—Celebration on the 40th Teaching Anniversary of Prof. Chunxiang Cui"

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Metals and Alloys".

Deadline for manuscript submissions: 20 July 2023 | Viewed by 914

Special Issue Editors

Key Laboratory for New Type of Functional Materials of Hebei Province, School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300400, China
Interests: solidification behavior of light alloys; bulk metallic glass composites; strengthening and toughening of metals and their fatigue behavior; functional metal materials for water treatment
Special Issues, Collections and Topics in MDPI journals
Key Laboratory for New Type of Functional Materials of Hebei Province, School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300400, China
Interests: biodegradable metals; bone tissue engineering scaffolds; porous Zn-based scaffolds; metal matrix composites; corrosion; magnesium alloys; micro-arc oxidation

Special Issue Information

Dear Colleagues,

In situ composite theory originates from the classical metallurgical concept of in situ crystallization, that is, the second phase or reinforcement phase is produced in situ during the formation of materials to obtain good interface bonding. After over 50 years of development, the strategy of in situ synthesis has been extended to a wider range of material systems, such as alloys, ceramics, carbon-based composite materials, and polymer materials, playing an important role in material design and product manufacturing. In situ metal matrix composites (in situ MMCs), which benefit from in situ synthesis reaction, have shown the characteristics of tight interface bonding, controllable reinforcement phase morphology and volume fraction, and low production cost and excellent performance. Related commercial products have received significant attention in aerospace, automotive, consumer electronics, robots, equipment manufacturing, environmental protection, new energy, biomedical materials, and other fields.

Professor Chunxiang Cui, as one of the first Chinese scholars who paid attention to the in situ synthesis theory, has been engaged in the research of MMCs for a long time, and has made outstanding achievements in the fields of high strength and high conductivity copper matrix composites, high modulus aluminum matrix composites, advanced titanium aluminum matrix composites, nano magnetic composites, etc. Moreover, he retraced the idea of in situ synthesis from the field of composite design to the field of metallurgy, proposed the concept of in situ composite inoculant (or master alloy) which is prepared by nano crystallization and used as modifying and refining agents to modify and refine aluminum alloys, titanium aluminum alloys, and alloy steels. This new concept was applied in improving the traditional metal metallurgy technology, effectively improving the metallurgical quality and service performance of common metal materials. This academic idea has aroused great attention in the field of iron and steel metallurgy, and has inspired a series of new developments in the current era of traditional technologies, such as inoculation or modification. At present, he has published more than 490 academic papers related to in situ MMCs, and has applied for 65 invention patents, making outstanding contributions to the development of MMCs in China. In October 2020, he won the International Advanced Materials Scientist Award issued by the International Society for Advanced Materials.

Professor Chunxiang Cui, as one of the first to attain the major of Material Science and Engineering in China, has been engaged in the field of higher education for 40 years. He is good at teaching students in accordance with their aptitude, teaching them in a method that works best for them. He has trained a large number of talents engaged in the research of MMCs and other field of materials. In order to celebrate the 40th anniversary of Professor Chunxiang Cui becoming a teacher, we invite you to contribute to this commemorative Special Issue, which focuses on the following topics: in situ synthesis technology, composite microstructure characterization, mechanical behavior and deformation mechanism, functional properties and their physical essence, interface microstructure representation, interface reconstruction and interface structure regulation, in situ surface engineering, etc. This Special Issue will cover all aspects of the above topics, including computation, simulation, theoretical and experimental research, and both research papers and review articles are welcomed.

Dr. Xin Wang
Dr. Lichen Zhao
Guest Editors

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.

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2300 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

  • metal matrix composite
  • in situ synthesis
  • interface microstructure
  • aluminium alloys
  • titanium alloys
  • magnesium alloy
  • alloy steels
  • biomaterial
  • new energy materials

Published Papers (2 papers)

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Research

Article
Fast Degradation of Azo Dyes by In Situ Mg-Zn-Ca-Sr Metallic Glass Matrix Composite
Materials 2023, 16(6), 2201; https://doi.org/10.3390/ma16062201 - 09 Mar 2023
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Abstract
Mg-based metallic glass (MG) has attracted extensive attention in the field of wastewater treatment due to its high decolorization rate in degrading azo dyes. However, the azo dye degradation rate of Mg-based MGs is strongly dependent on the particle size. Improving the intrinsic [...] Read more.
Mg-based metallic glass (MG) has attracted extensive attention in the field of wastewater treatment due to its high decolorization rate in degrading azo dyes. However, the azo dye degradation rate of Mg-based MGs is strongly dependent on the particle size. Improving the intrinsic degradation efficiency using large particles is of great interest for future applications. In this work, in-situ metallic glass matrix composites (MGMCs) with high Mg content were successfully prepared by melt spinning. It is found that when the Mg content is 79–82%, the as-spun sample shows typical glassy characteristics. The SEM and XRD tests confirm that the as-spun sample is composed of α-Mg dendrite, multiple Mg-Zn intermetallic particles and an MG matrix. The degradation experiment using Direct Blue 6 and a 500 μm particle sample demonstrate that the Mg82Zn14Ca3Sr1 MGMC sample degrades azo dyes faster than typical Mg-Zn-Ca MG alloy. It can be attributed to the galvanic cell effect on the α-Mg/MG interface, which reduces the waste of active Mg atoms in the MG matrix according to the corrosion protection mechanism by the α-Mg anode sacrifice. This result provides a new perspective and insight into the design of azo dye degradation alloys and the understanding of degradation mechanisms. Full article
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Article
Grain Refinement Mechanisms of TiC0.5N0.5 Nanoparticles in Aluminum
Materials 2023, 16(3), 1214; https://doi.org/10.3390/ma16031214 - 31 Jan 2023
Viewed by 404
Abstract
In this study, TiC0.5N0.5 nanoparticles (NPs) are shown to induce a remarkable grain refinement of aluminum at various cooling rates. The grain refinement mechanisms are systematically investigated by microstructure observation, edge-to-edge matching (E2EM) model prediction, and first-principles calculations. The experimental [...] Read more.
In this study, TiC0.5N0.5 nanoparticles (NPs) are shown to induce a remarkable grain refinement of aluminum at various cooling rates. The grain refinement mechanisms are systematically investigated by microstructure observation, edge-to-edge matching (E2EM) model prediction, and first-principles calculations. The experimental results suggest that as the cooling rates increase from 10 K/s to 70 K/s, a transition from intergranular to intragranular distribution of NPs occurs and the Al/TiC0.5N0.5 interface varies from incoherent to coherent. Based on the E2EM analysis combined with first-principles calculation, it is found that TiC0.5N0.5 can act as a potent nucleant for the heterogeneous nucleation of α-Al. By analyzing the NP effects on the nucleation and growth of α-Al, the grain growth restriction and nucleation promotion mechanisms are proposed to elucidate the refinement phenomena at low and high cooling conditions, respectively. Full article
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