Special Issue "Research on Machining Methods and Mechanical Properties of Alloys"

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Manufacturing Processes and Systems".

Deadline for manuscript submissions: 31 May 2021.

Special Issue Editor

Prof. Marcin Nabialek
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Guest Editor
Department of Physics, Faculty of Production Engineering and Materials Technology; Częstochowa University of Technology, Czestochowa, Poland
Interests: amorphous materials; nanoscience; properties; magnetism; titanium alloys; biomaterials; methods of production of supercooled materials; foundry engineering; new technology; nanomaterials; annealing methods; materials science; physics; chemical engineering; engineering
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Special Issue Information

Dear Colleagues,

Technological development is associated with the consumption of vast amounts of energy. Increases in environmental pollution and the greenhouse effect are driving the search for improvements (and savings) in the field of materials engineering. Therefore, modern construction and functional materials must feature increasingly improved mechanical and performance parameters. The development of these materials relies on the search for new, as well as the improvement of existing, production, and material processing methods for alloys.

An example of a class of modern materials is that of titanium-based alloys—which are used as construction materials. The interest surrounding titanium-based alloys is generated by their very good mechanical properties, concurrent with their low specific weight. Due to their high bio-conformity and absence of cytotoxicity, titanium-based alloys can be applied as medical implants.

Another promising group of materials is that of bulk metallic glasses. These materials usually exhibit better mechanical properties than their crystalline counterparts.

Both titanium-based alloys and bulk metallic glasses require continuous improvements. Their processing methods are constantly being improved. For the titanium-based alloys, surface processing is commonly used, which improves their hardness and corrosion resistance. Due to their structure and properties of bulk, metallic glasses are more difficult to process. In practice, the mechanical properties of the metallic glasses can be controlled by their thermal treatment. This method can lead to structural relaxation or partial crystallization, which influences the hardness and/or malleability of these materials.

Composite materials make up an important target in the development of construction and functional materials. It is well known that composites should exhibit better properties than their individual constituents. Composite materials find wide application in many areas of technology; for example, the sports and electronics industries.

The Special Issue of “Research on Machining Methods and Mechanical Properties of Alloys” concerns all aspects related to the mechanical properties of conventional alloys, amorphous alloys, and metal-based composites. We welcome articles related to the machining and thermal treatment of conventional and amorphous alloys. It is my pleasure to invite the submission of manuscripts for this Special Issue.

Prof. Marcin Nabialek
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. 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 2000 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

  • Machining methods
  • Mechanical properties
  • New technology
  • Unique properties
  • Special properties
  • Hardness
  • Abrasion resistance
  • Annealing process
  • Improvement of properties
  • Crystalline face
  • Crystalline grain
  • Nanomaterial
  • Crystalline structure

Published Papers (2 papers)

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Research

Open AccessArticle
Developing an Analytical Model and Computing Tool for Optimizing Lapping Operations of Flat Objects Made of Alloyed Steels
Materials 2020, 13(6), 1343; https://doi.org/10.3390/ma13061343 - 16 Mar 2020
Abstract
Lapping is a finishing process where loose abrasive grains contained in a slurry are pressed against a workpiece to reduce its surface roughness. To perform a lapping operation, the user needs to set the values of the respective lapping conditions (e.g., pressure, depth [...] Read more.
Lapping is a finishing process where loose abrasive grains contained in a slurry are pressed against a workpiece to reduce its surface roughness. To perform a lapping operation, the user needs to set the values of the respective lapping conditions (e.g., pressure, depth of cut, the rotational speed of the pressing lap plate, and alike) based on some material properties of the workpiece, abrasive grains, and slurry, as well as on the desired surface roughness. Therefore, a mathematical model is needed that establishes the relationships among the abovementioned parameters. The mathematical model can be used to develop a lapping operation optimization system, as well. To this date, such a model and system are not available mainly because the relationships among lapping conditions, material properties of abrasive grains and slurry, and surface roughness are difficult to establish. This study solves this problem. It presents a mathematical model establishing the required relationships. It also presents a system developed based on the mathematical model. In addition, the efficacy of the system is also shown using a case study. This study thus helps systematize lapping operations in regard to real-world applications. Full article
(This article belongs to the Special Issue Research on Machining Methods and Mechanical Properties of Alloys)
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Open AccessArticle
Surface Quality Assessment after Milling AZ91D Magnesium Alloy Using PCD Tool
Materials 2020, 13(3), 617; https://doi.org/10.3390/ma13030617 - 30 Jan 2020
Abstract
Surface roughness is among the key indicators describing the quality of machined surfaces. Although it is an aggregate of several factors, the condition of the surface is largely determined by the type of tool and the operational parameters of machining. This study sought [...] Read more.
Surface roughness is among the key indicators describing the quality of machined surfaces. Although it is an aggregate of several factors, the condition of the surface is largely determined by the type of tool and the operational parameters of machining. This study sought to examine the effect that particular machining parameters have on the quality of the surface. The investigated operation was the high-speed dry milling of a magnesium alloy with a polycrystalline diamond (PCD) cutting tool dedicated for light metal applications. Magnesium alloys have low density, and thus are commonly used in the aerospace or automotive industries. The state of the Mg surfaces was assessed using the 2D surface roughness parameters, measured on the lateral and the end face of the specimens, and the end-face 3D area roughness parameters. The description of the surfaces was complemented with the surface topography maps and the Abbott–Firestone curves of the specimens. Most 2D roughness parameters were to a limited extent affected by the changes in the cutting speed and the axial depth of cut, therefore, the results from the measurements were subjected to statistical analysis. From the data comparison, it emerged that PCD-tipped tools are resilient to changes in the cutting parameters and produce a high-quality surface finish. Full article
(This article belongs to the Special Issue Research on Machining Methods and Mechanical Properties of Alloys)
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