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Metals
Special Issues
Experimental and Numerical Simulation of Metallic Materials
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Experimental and Numerical Simulation of Metallic Materials

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Computation and Simulation on Metals".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 8054

Special Issue Editors

Prof. Dr. Valentin Ştefan Oleksik

E-Mail Website
Guest Editor
Faculty of Engineering, Lucian Blaga University of Sibiu, 550024 Sibiu, Romania
Interests: finite element analysis; explicit dynamics analysis; metal forming technologies; incremental forming process; material characterization; biomechanics
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Adinel Gavrus

E-Mail Website
Guest Editor
National Institute of Applied Sciences of Rennes - INSA Rennes, 35708 Rennes, France
Interests: materials mechanics; rapid dynamics; material constitutive behaviour; rheology; tribology; materials properties identification; numerical modelling; numerical inverse analysis

Special Issue Information

Dear Colleagues,

Although over the last decade a multitude of unconventional materials have been commonly used, the importance of metallic materials remains as high as before, regardless of the branch of industry in which they are used: automotive, aerospace, industry dedicated to medical devices, consumer goods etc. These metallic materials can be conventional materials, such as carbon steels, alloy steels, aluminium alloys, or new materials, such as titanium alloys, rare metals, precious metals, composite materials with a metal matrix, etc., and can be obtained either by conventional technologies or new technologies, such as 3D printing, selective laser sintering or additive manufacturing. The evaluation of the behaviour of metallic materials in different domains can be realized through theoretical research, numerical simulation and experimental research that validates the theoretical results. This Special Issue intends to invite authors to publish their most recent progress through original high-quality work in the field of experimental and numerical simulation of metallic materials. Special attention will be dedicated, but not limited, to innovative materials which are able to improve the mechanical behaviour of a structural component and innovative manufacturing processes of metallic materials.

Prof. Dr. Valentin Ştefan Oleksik
Prof. Dr. Adinel Gavrus
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.

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

  • Numerical simulation
  • experimental research
  • finite element analysis
  • metallic materials characterization
  • metallic materials and their alloys
  • additive manufacturing
  • selective laser sintering
  • manufacturing processes
  • laser welding
  • innovative manufacturing process

Published Papers (3 papers)

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Research

12 pages, 4657 KiB  
Article
Structures and Mechanical Properties of Some Dual-Phase Steels with Low Manganese Content
by Constantin Dulucheanu, Traian Lucian Severin, Delia Aurora Cerlinca and Luminita Irimescu
Metals 2022, 12(2), 189; https://doi.org/10.3390/met12020189 (registering DOI) - 20 Jan 2022
Cited by 6 | Viewed by 1923
Abstract
In recent years, to reduce cars costs, research has been conducted on dual-phase steels with low manganese content (below 1.0%). This study investigated the influence of technological parameters of heat treatment (heating temperature and cooling medium) on such steels’ structures and mechanical properties. [...] Read more.
In recent years, to reduce cars costs, research has been conducted on dual-phase steels with low manganese content (below 1.0%). This study investigated the influence of technological parameters of heat treatment (heating temperature and cooling medium) on such steels’ structures and mechanical properties. The ferrite-martensitic structures, specific for dual-phase steels, were obtained by intercritical quenching: heating of samples (made of alloys with 0.511% Mn, respectively 0.529% Mn) to temperatures located between critical points Ac1 and Ac3, followed by cooling in water without mechanical agitation and in water activated with ultrasounds at the frequency of 59 kHz. Through metallographic analyses and tensile tests, it was possible to determine the volume fraction of martensite, the ferrite microhardness, the ultimate tensile strength, the total elongation, and with the obtained data, their variations with the heating temperature and the cooling medium were established. Raising the heating temperature (between 760 °C and 820 °C) and using ultrasounds at cooling increased the volume fraction of martensite and the ferrite microhardness. This fact has increased the mechanical strength and reduced the deformability of the studied dual-phase steels. Intercritical quenching in water activated with ultrasounds provided values of structural characteristics and mechanical properties very close to those obtained by quenching in water without mechanical agitation, but was accomplished using a higher-temperature heating. The results obtained were compared with those determined in previous research, performed on dual-phase steel with 1.90% Mn. Full article
(This article belongs to the Special Issue Experimental and Numerical Simulation of Metallic Materials)
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21 pages, 50867 KiB  
Article
Effect of Side Blowing on Fluid Flow and Mixing Phenomenon in Gas-Stirred Ladle
by Rong Cheng, Liangjin Zhang, Yanbin Yin and Jiongming Zhang
Metals 2021, 11(2), 369; https://doi.org/10.3390/met11020369 (registering DOI) - 23 Feb 2021
Cited by 16 | Viewed by 2410
Abstract
To investigate the gas agitation characteristics of side blowing, the fluid flow and mixing phenomenon in a 1:3 scale model ladle of a 150 t industrial gas-stirred ladle with bottom and side plugs were studied by using physical and numerical modelings together. Side [...] Read more.
To investigate the gas agitation characteristics of side blowing, the fluid flow and mixing phenomenon in a 1:3 scale model ladle of a 150 t industrial gas-stirred ladle with bottom and side plugs were studied by using physical and numerical modelings together. Side blowing enhanced the horizontal flow of water in the model ladle. Compared with bottom blowing, side blowing that is close to the ladle bottom with more than two plugs increases the average velocity of water, which represents the agitation power, improves the uniformity of water velocity distribution, reduces the stagnant region rate, and shortens the mixing time. The mixing time of dual bottom plugs is almost 1.5 times of that of four side plugs at 116 mm under the same flow rate. The mixing time is not only influenced by the agitation power but also by the uniformity of water velocity distribution. Although the agitation power of four side plugs at 450 mm under the flow rate of 1.8 m3/h is about 1.5 times of that at 116 mm with 0.6 m3/h. The mixing time of the 1.8 m3/h flow rate is about 1.2 times of that of the 0.6 m3/h because of the different water velocity distributions. Full article
(This article belongs to the Special Issue Experimental and Numerical Simulation of Metallic Materials)
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18 pages, 7787 KiB  
Article
Modeling of the Effect of the Building Strategy on the Thermomechanical Response of Ti-6Al-4V Rectangular Parts Manufactured by Laser Directed Energy Deposition
by Xufei Lu, Miguel Cervera, Michele Chiumenti, Junjie Li, Xianglin Ji, Guohao Zhang and Xin Lin
Metals 2020, 10(12), 1643; https://doi.org/10.3390/met10121643 - 6 Dec 2020
Cited by 17 | Viewed by 2898
Abstract
Part warpage and residual stress are two of the main challenges for metal additive manufacturing (AM) as they result in lower geometric precision and poor mechanical properties of the products. This work investigates the effect of the building strategy on the heat transfer [...] Read more.
Part warpage and residual stress are two of the main challenges for metal additive manufacturing (AM) as they result in lower geometric precision and poor mechanical properties of the products. This work investigates the effect of the building strategy on the heat transfer process and the evolution of the thermally induced mechanical variables in laser directed energy deposition (L-DED) in order to minimize residual stresses and deformations. A 3D finite element (FE) thermo-mechanical model is firstly calibrated through in-situ experiments of rectangular workpieces fabricated by L-DED technology, and, secondly, the coupled thermo-mechanical responses for different process parameters and scanning patterns are discussed in detail. On the calibration stage, the remarkable agreement is achieved between predicted results and experimental data. Regarding the modeling stage, the numerical results indicate that minimization of the part warpage is achieved by reducing the back speed and shortening the scanning lines during the building process. Both residual stress and deformation can be further reduced if preheating the baseplate is added before L-DED. Full article
(This article belongs to the Special Issue Experimental and Numerical Simulation of Metallic Materials)
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