Special Issue "Metallic Materials and Manufacturing"

A special issue of Metals (ISSN 2075-4701).

Deadline for manuscript submissions: 31 October 2018

Special Issue Editor

Guest Editor
Dr. Denni Kurniawan

Department of Mechanical Engineering, Curtin University, Miri 98009, Malaysia
Website | E-Mail
Interests: manufacturing processes; biomaterials; composites; mechanical properties

Special Issue Information

Dear Colleagues,

This Special Issue covers all aspects of metals from its materials engineering and technology, as well as their manufacturing. Any type of article aligned with the journal (original research, case study, technical report, short communication, and reviews), within the scope of materials and manufacturing of metals is welcome for this Special Issue. Additionally included are selected papers from the 3rd International Materials, Industrial, and Manufacturing Engineering Conference (MIMEC2017) in Miri, Malaysia (www.mimec.me) and the 2nd International Conference on Materials and Manufacturing Engineering and Technology (CoMMET 2018) in Bali, Indonesia (www.commet.me). Please consider contributing to this Special Issue. Thank you and wishing you all the best. 

Dr. Denni  Kurniawan
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 papers will be 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 1200 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

  • Metals as engineering materials
  • Metallic biomaterials and medical devices
  • Functional materials, including semiconductors
  • Nanomaterials and nanotechnology
  • Surface engineering (coating, thin films, wear)
  • Materials characterization and testing, including non destructive test/evaluation
  • Manufacturing processes, including machining, metal forming, joining, and additive manufacturing
  • Modelling and simulations
  • Corrosion and degradation of metals

Published Papers (3 papers)

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Research

Open AccessArticle An Efficient Approach to Address Issues of Graphene Nanoplatelets (GNPs) Incorporation in Aluminium Powders and Their Compaction Behaviour
Metals 2018, 8(2), 90; doi:10.3390/met8020090
Received: 12 October 2017 / Revised: 31 December 2017 / Accepted: 22 January 2018 / Published: 25 January 2018
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Abstract
The exceptional potential of the graphene has not been yet fully translated into the Al matrix to achieve high-performance Al nanocomposite. This is due to some critical issues faced by graphene during its processing such as the dispersion uniformity, structure damage, compatibility/wettability, and
[...] Read more.
The exceptional potential of the graphene has not been yet fully translated into the Al matrix to achieve high-performance Al nanocomposite. This is due to some critical issues faced by graphene during its processing such as the dispersion uniformity, structure damage, compatibility/wettability, and low graphene embedding content in Al matrix. In the present work, a new integrative method was adopted and named as “solvent dispersion and ball milling” (SDBM) to address the issues above efficiently in a single approach. This strategy involves effective graphene nanoplatelets (GNPs) solvent dispersion via surfactant decoration and solution ball milling employed to polyvinyl alcohol (PVA) coated Al with various GNPs content (0.5, 1 and 1.5 wt. %). Flaky Al powder morphology attained by optimizing ball milling parameters and used for further processing with GNPs. Detailed powders characterizations were conducted to investigate morphology, graphene dispersion, group functionalities by FTIR (Fourier transform infrared spectroscopy) spectroscopy and crystallinity by powder XRD (X-ray diffraction)analysis. Compaction behaviour and spring back effect of the GNPs/Al powders was also investigated at different compaction pressure (300 to 600 Mpa) and varying GNPs fractions. In response, green and sintered relative density (%) along with effect on the hardness of the nanocomposites samples were examined. Conclusively, in comparison with the unreinforced Al, GNP/Al nanocomposite with 1.5 wt. % GNPs exhibited the highest hardness gives 62% maximum increase than pure Al validates the effectiveness of the approach produces high fraction uniformly dispersed GNPs in Al matrix. Full article
(This article belongs to the Special Issue Metallic Materials and Manufacturing)
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Open AccessArticle Guidelines for Selecting Plugs Used in Thin-Walled Tube Drawing Processes of Metallic Alloys
Metals 2017, 7(12), 572; doi:10.3390/met7120572
Received: 18 November 2017 / Revised: 11 December 2017 / Accepted: 13 December 2017 / Published: 18 December 2017
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Abstract
In this paper, some practical guidelines to select the plug or set of plugs more adequate to carry out drawing processes of thin-walled tubes carried out with fixed conical inner plug are presented. For this purpose, the most relevant input parameters have been
[...] Read more.
In this paper, some practical guidelines to select the plug or set of plugs more adequate to carry out drawing processes of thin-walled tubes carried out with fixed conical inner plug are presented. For this purpose, the most relevant input parameters have been considered in this study: the tube material, the most important geometrical parameters of the process (die semiangle, α , and cross-sectional area reduction, r ) and the friction conditions (Coulomb friction coefficients, μ 1 , between the die and the tube outer surface, and μ 2 , between the plug and the tube inner surface). Three work-hardening materials are analyzed: the annealed copper UNS C11000, the aluminum UNS A91100, and the stainless steel UNS S34000. The analysis is realized by means of the upper bound method (UBM), modelling the plastic deformation zone by triangular rigid zones (TRZ), under the validated assumption that the process occurs under plane strain conditions. The obtained results allow establishing, for each material, a group of geometrical parameters, friction conditions, a set of plugs that make possible to carry out the process under good conditions, and the optimum plug to carry out the process using the minimum amount of energy. The proposed model is validated by means of an own finite element analysis (FEA) carried out under different conditions and, in addition, by other finite element method (FEM) simulations and real experiments taken from other researchers found in the literature (called literature simulations and literature experimental results, respectively). As a main conclusion, it is possible to affirm that the plug that allows carrying out the process with minimum quantity of energy is cylindrical in most cases. Full article
(This article belongs to the Special Issue Metallic Materials and Manufacturing)
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Open AccessArticle Experimental Investigation of Forming Forces in Frictional Stir Incremental Forming of Aluminum Alloy AA6061-T6
Metals 2017, 7(11), 484; doi:10.3390/met7110484
Received: 4 September 2017 / Revised: 2 October 2017 / Accepted: 17 October 2017 / Published: 7 November 2017
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Abstract
The incremental sheet forming (ISF) process is an emerging flexible sheet-forming process, which is adequate for the manufacturing of unique or small-volume batches. Single-point incremental forming (SPIF) is the original technology of incremental sheet-forming processes. In this article, frictional stir-assisted SPIF was used
[...] Read more.
The incremental sheet forming (ISF) process is an emerging flexible sheet-forming process, which is adequate for the manufacturing of unique or small-volume batches. Single-point incremental forming (SPIF) is the original technology of incremental sheet-forming processes. In this article, frictional stir-assisted SPIF was used to deform AA6061-T6 aluminum alloy. Experimental tests were conducted to measure the forming forces during this process for the concerned lightweight material. The influence of process parameters was investigated, which included tool rotation speed, feed rate, step size and tool diameter on the produced forming forces. A Taguchi technique for the design of experiment (DOE) and the varying wall angle conical frustum (VWACF) test was employed in this study. The results show that the rotation spindle speed was the most dominant parameter that affects the forming forces, followed by the step size, feed rate and tool diameter. In addition, the interaction between the feed rate and step size has a notable impact on the values of the forming forces. Full article
(This article belongs to the Special Issue Metallic Materials and Manufacturing)
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