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Advanced Light Metal and Alloys: Preparation, Characterization, and Applications (2nd Edition)

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

Deadline for manuscript submissions: 20 October 2024 | Viewed by 2477

Special Issue Editor

Dr. Pingping Liu

E-Mail Website
Guest Editor
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
Interests: beryllium; Cu-based shape memory alloys; microstructure; irradiation damage of materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Adopting light-weight equipment and reducing the quantity of materials used are new and essential trends in science and technology. Adopted to preserve our limited stores of natural resources and energy, these metals and alloys are materials of relatively low density and high strength-to-weight ratios, e.g., lithium (Li), beryllium (Be), aluminum (Al), magnesium (Mg), titanium (Ti), and so on. Light-weight metal and alloys are widely used in aerospace, automotive, architectural, lithographic, packaging, and electrical applications. For example, about 70% of commercial civil aircraft airframes are made from aluminium alloys and, without aluminium, civil aviation would not be economically viable. Saving even one kilogram of metal in the design and construction of an aircraft can result in important weight reductions, lowering construction costs and fuel requirements. Beryllium is used in aircraft components, missiles, spacecraft, satellite gyroscopes, scan mirrors, sports equipment, and electronics as a structural and functional material. This metal offers the beneficial attributes of high flexural rigidity, thermal stability, thermal conductivity and low density. The development of high-performance light-weight metals and alloys is increasing in pace and scale. Materials with high performance, stability, and low cost are critical for realizing a sustainable future.

The aim of this Special Issue, entitled “Advanced Light Metal and Alloys: Preparation, Characterization, and Applications”, is to present recent advancements in various aspects related to material design, processes and applications. Potential topics include, but are not limited to:

The development of advanced light-weight metals and alloys with high strength, high temperature resistance, corrosion resistance, and other excellent properties;

  • The design of high-performance light-weight metals and alloys using empirical, theoretical and computational methods, including DFT, deep learning, etc.;
  • The development of new process methods and heat treatment methods of light-weight metals and alloys including friction stir processing (FSP), additive manufacturing (AM), and related topics;
  • Microstructural evolution and related mechanism exploration in light-weight metals and alloys subjected to deformation, corrosion, creep and other processes.

We are pleased to invite you to submit full research papers, communications, and review papers to this Special Issue.

Dr. Pingping Liu
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. Materials is an international peer-reviewed open access semimonthly 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

  • light metal and alloys
  • Li
  • Be
  • Al
  • Mg
  • Ti
  • material design
  • additive manufacturing
  • friction stir welding
  • microstructure
  • strengthening mechanisms

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Published Papers (3 papers)

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Research

12 pages, 4889 KiB  
Article
Blistering Behavior of Beryllium and Beryllium Alloy under High-Dose Helium Ion Irradiation
by Ping-Ping Liu, Qi-Cong Wang, Yu-Mei Jia, Wen-Tuo Han, Xiao-Ou Yi, Qian Zhan and Fa-Rong Wan
Materials 2024, 17(16), 3997; https://doi.org/10.3390/ma17163997 - 11 Aug 2024
Viewed by 617
Abstract
Beryllium (Be) has been selected as the solid neutron multiplier material for a tritium breeding blanket module in ITER, which is also the primary option of the Chinese TBM program. But the irradiation swelling of beryllium is severe under high temperature, high irradiation [...] Read more.
Beryllium (Be) has been selected as the solid neutron multiplier material for a tritium breeding blanket module in ITER, which is also the primary option of the Chinese TBM program. But the irradiation swelling of beryllium is severe under high temperature, high irradiation damage and high doses of transmutation-induced helium. Advanced neutron multipliers with high stability at high temperature are desired for the demonstration power plant (DEMO) reactors and the China Fusion Engineering Test Reactor (CFETR). Beryllium alloys mainly composed of Be12M (M is W or Ti) phase were fabricated by HIP, which has a high melting point and high beryllium content. Beryllium and beryllide (Be12Ti and Be12W) samples were irradiated by helium ion with 30 keV and 1 × 1018 cm−2 at RT. The microstructures of Be, Be12Ti and Be12W samples were analyzed by SEM and TEM before and after ion irradiation. The average size of the first blistering on the surface of Be-W alloy is about 0.8 μm, and that of secondary blistering is about 79 nm. The surface blistering rates of the beryllium and beryllide samples were also compared. These results may provide a preliminary experimental basis for evaluating the irradiation swelling resistance of beryllium alloy. Full article
(This article belongs to the Special Issue Advanced Light Metal and Alloys: Preparation, Characterization, and Applications (2nd Edition))
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15 pages, 11626 KiB  
Article
Effect of Deposition Parameters and Deposition Height on the Microstructure and Properties of Laser–Cold Metal Transfer Composite Additively Manufactured 2319 Aluminum Alloy
by Mingrui Chen, Shuncun Luo, Xiaming Chen, Xiaonan Wang, Zhikang Wu, Hiromi Nagaumi and Zengrong Hu
Materials 2024, 17(12), 2914; https://doi.org/10.3390/ma17122914 - 14 Jun 2024
Cited by 2 | Viewed by 524
Abstract
The 2319-Al alloy is widely used in aviation industry. The crack-free 2319 alloy thin-walled sample was fabricated utilizing the laser-CMT composite additive manufacturing technique, achieving a material utilization rate of 96.43%. The impact of deposition parameters and deposition height on the microstructure and [...] Read more.
The 2319-Al alloy is widely used in aviation industry. The crack-free 2319 alloy thin-walled sample was fabricated utilizing the laser-CMT composite additive manufacturing technique, achieving a material utilization rate of 96.43%. The impact of deposition parameters and deposition height on the microstructure and mechanical properties was studied. The microhardness of the additive manufacturing samples exhibited a gradual decrease from construction direction, with values reaching 90 HV, 78 HV, and 72 HV, respectively. The tensile property also exhibited a gradual decrease from the bottom to the top; the highest tensile strength was 296 MPa. The grain size along the construction direction of the deposited sample gradually increased, exhibiting respective sizes of 34.7 um, 36.6 um, and 45.7 um. With the increase in the height of the second phase, the segregation at the grain boundary is intensified, and as the size inside the grain increases, the corresponding density decreases. The good laser-CMT composite additively manufactured 2319 aluminum alloy samples could be obtained under the optimized deposition parameters. Full article
(This article belongs to the Special Issue Advanced Light Metal and Alloys: Preparation, Characterization, and Applications (2nd Edition))
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21 pages, 11248 KiB  
Article
Effects of Heat-Treatment and Cold-Rolling on Mechanical Properties and Impact Failure Resistance of New Al 6082 Aluminum Alloy by Continuous Casting Direct Rolling Process
by Jun-Ren Zhao, Fei-Yi Hung and Jian-Hong Chen
Materials 2024, 17(4), 805; https://doi.org/10.3390/ma17040805 - 7 Feb 2024
Viewed by 906
Abstract
Al 6082 aluminum alloy has excellent corrosion resistance, strength, and formability. However, owing to the recrystallization effect of a hot working process, coarse grains form easily in this material, which reduces its strength and service life. The novel continuous casting direct rolling (CCDR) [...] Read more.
Al 6082 aluminum alloy has excellent corrosion resistance, strength, and formability. However, owing to the recrystallization effect of a hot working process, coarse grains form easily in this material, which reduces its strength and service life. The novel continuous casting direct rolling (CCDR) method can prevent the deterioration of this material. Thus, we used CCDR Al 6082 aluminum alloy as the research material in this study. By subjecting a CCDR Al 6082 aluminum alloy to heat treatment (T4 and T6) and cold rolling, the influence of recrystallization effect on its mechanical properties and on impact failure resistance were explored. The results demonstrated that the specimen subjected to T4 heat treatment had a higher elongation and that the specimen subjected to T6 heat treatment had a higher strength. After cold rolling, the hardness and strength of the specimens subjected to different heat treatments (coded T4R4 and T6R4) increased because of the work’s hardening effect. Moreover, the elongations of both specimens decreased, but they were higher than the industrial standard (>10%). The strength of specimen T6R4 was higher (up to 400 MPa) than specimen T4R4. Moreover, relative to specimen T4R4, specimen T6R4 had greater tensile and Charpy impact failure toughness. Full article
(This article belongs to the Special Issue Advanced Light Metal and Alloys: Preparation, Characterization, and Applications (2nd Edition))
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