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Advanced and High Performance Metallic Foams (Volume II)

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

Deadline for manuscript submissions: closed (20 October 2022) | Viewed by 3711

Special Issue Editor


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Guest Editor
1. Department of Materials Science and Engineering, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Budapest, Hungary
2. MTA-BME Lendület Composite Metal Foams Research Group, Hungarian Academy of Sciences, Budapest, Hungary
Interests: metallic foams; metal matrix composites; mechanical testing; fatigue; fracture mechanics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Metallic foams are continually developing. Today, advanced high-performance metallic foams (such as low-cost, high-strength, high-stiffness, excellent energy absorbers, etc.) are emerging. Researchers in the metallic foam community are pushing the boundaries further and further to produce stronger, lighter, higher-performance foams.

It is my pleasure to invite you to publish your metallic-foam-related research works in the Special Issue of Materials on “Advanced and High-Performance Metallic Foams” as a full paper, short communication, or review. This Special Issue covers all types and aspects of metallic foams from design through production and intensive testing, including but not limited to liquid- and solid-state and 3D additive production methods, blowing agents, foaming, macro-, meso-, and microstructures of foams, structural reverse engineering, modeling of metallic foams, quasi-static, dynamic and cyclic mechanical properties (compressive, tensile, and bending behavior, including blast protection and piercing) at room, elevated, or cryogenic temperature, mechanical damping, failure mechanisms and energy absorption of metallic foams, foam-filled structures and their mechanical stability, biocompatible foams, degradable and recyclable metallic foams, joining technologies (brazing, welding, gluing, etc.), forming of metallic foams, notch and hole sensitivity, applications, and case studies.

Dr. Imre Norbert Orbulov
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

  • metallic foams
  • foaming
  • mechanical testing
  • mechanical properties
  • mechanical damping
  • microstructure
  • additive manufacturing
  • reverse engineering
  • blast protection
  • failure mechanism
  • biocompatible foam

Published Papers (2 papers)

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Research

23 pages, 10361 KiB  
Article
Dynamic Response of Sandwich Tubes with Continuously Density-Graded Aluminum Foam Cores under Internal Explosion Load
by Anshuai Wang, Xuehui Yu, Han Wang, Yu Li, Jie Zhang and Xueling Fan
Materials 2022, 15(19), 6966; https://doi.org/10.3390/ma15196966 - 7 Oct 2022
Cited by 15 | Viewed by 1496
Abstract
In this paper, the dynamic response of continually density-graded aluminum foam sandwich tubes under internal explosion load was studied. A 3D mesoscopic finite-element model of continually density-graded aluminum foam sandwich tubes was established by the 3D-Voronoi technology. The finite-element results were compared with [...] Read more.
In this paper, the dynamic response of continually density-graded aluminum foam sandwich tubes under internal explosion load was studied. A 3D mesoscopic finite-element model of continually density-graded aluminum foam sandwich tubes was established by the 3D-Voronoi technology. The finite-element results were compared with the existing experimental results, and the rationality of the model was verified. The influences of the core density distribution, the core density gradient, and the core thickness on the blast resistance of the sandwich tubes were analyzed. The results showed that the blast resistance of the sandwich tube with the negative-gradient core is better than that of the sandwich tube with the uniform core. While the blast resistance of the sandwich tube with the positive-gradient core or the middle-hard-gradient core is worse than that of the sandwich tube with the uniform core. For the sandwich tube with the negative-gradient core, the core density gradient increased, and the blast resistance decreased. Increasing the thickness of the core can effectively decrease the deformation of the outer tube of the sandwich tube, but the specific energy absorption of both the whole sandwich tube and its core also decreases. Full article
(This article belongs to the Special Issue Advanced and High Performance Metallic Foams (Volume II))
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23 pages, 127799 KiB  
Article
Syntactic Iron Foams’ Properties Tailored by Means of Case Hardening via Carburizing or Carbonitriding
by Jörg Weise, Dirk Lehmhus, Jaqueline Sandfuchs, Matthias Steinbacher, Rainer Fechte-Heinen and Matthias Busse
Materials 2021, 14(16), 4358; https://doi.org/10.3390/ma14164358 - 4 Aug 2021
Cited by 4 | Viewed by 1687
Abstract
Metal foam inserts are known for their high potential for weight and vibration reduction in composite gear wheels. However, most metal foams do not meet the strength requirements mandatory for the transfer of sufficiently high levels of torque by the gears. Syntactic iron [...] Read more.
Metal foam inserts are known for their high potential for weight and vibration reduction in composite gear wheels. However, most metal foams do not meet the strength requirements mandatory for the transfer of sufficiently high levels of torque by the gears. Syntactic iron and steel foams offer higher strength levels than conventional two-phase metal foams, thus making them optimum candidates for such inserts. The present study investigates to what extent surface hardening treatments commonly applied to gear wheels can improve the mechanical properties of iron-based syntactic foams. Experiments performed thus focus on case hardening treatments based on carburizing and carbonitriding, with subsequent quenching and tempering to achieve surface hardening effects. Production of samples relied on the powder metallurgical metal injection molding (MIM) process. Syntactic iron foams containing 10 wt.% of S60HS hollow glass microspheres were compared to reference materials without such filler. Following heat treatments, the samples’ microstructure was evaluated metallographically; mechanical properties were determined via hardness measurements on reference samples and 4-point bending tests, on both reference and syntactic foam materials. The data obtained show that case hardening can indeed improve the mechanical performance of syntactic iron foams by inducing the formation of a hardened surface layer. Moreover, the investigation indicates that the respective thermo-chemical treatments can be applied to composite gear wheels in exactly the same way as to monolithic ones. In the surface region modified by the treatment, martensitic microstructures were observed, and as consequence, the bending limits of syntactic foam samples were increased by a factor of three. Full article
(This article belongs to the Special Issue Advanced and High Performance Metallic Foams (Volume II))
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