Advanced Machining Techniques for Metals and Alloys

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Casting, Forming and Heat Treatment".

Deadline for manuscript submissions: closed (31 July 2023) | Viewed by 1856

Special Issue Editors


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Guest Editor
Department of Mechanical Engineering, RMK College of Engineering and Technology, RSM Nagar, Puduvoyal, Tiruvallur Dist., Anna University, Chennai 601206, Tamil Nadu, India
Interests: machining; optimization; welding

E-Mail Website
Guest Editor
Department of Mechanical Engineering, RMK College of Engineering and Technology, RSM Nagar, Puduvoyal, Tiruvallur Dist., Anna University, Chennai 601206, Tamil Nadu, India
Interests: machining; MMC; PMC; DoE; optimization

Special Issue Information

Dear Colleagues,

Manufacturing of alloys and metals products with complex shapes using conventional machining process has turned out to be challenging for the industries as well as for the researcher in terms of achieving high accuracy and a sufficient surface finish. The use of appropriate advanced machining techniques is the route to meeting the current industrial requirements. Advanced machining technologies include ultrasonic machining, water jet machining, abrasive jet machining, chemical–mechanical polishing, electrochemical micromachining (ECMM), wire electrical discharge machining (WEDM), laser beam machining, electron/ion beam machining, and photochemical machining, among others. These advanced techniques are popular and economical to implement, and they allow the required profile and surface finish in metals and alloys to be achieved. Conventional metals are subjected to alloying and certain treatments to achieve the intended properties for desired applications. Further machining of property-enhanced metals/alloys becomes difficult and requires appropriate selection machining technique, an issue that is still under exploration.

In this Special Issue, we invite original and review articles that focus on but are not limited to the following:

  • Machining parameter investigation,
  • Surface quality,
  • Wear analysis,
  • Influence of thermal/chemical effects on the materials, optimization, and
  • Implementation of AI/ML

in all of the aforementioned machining techniques.

Dr. Manickam Balasubramanian
Dr. Thozhuvur Govindaraman Loganathan
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

  • machining parameter investigation
  • surface quality
  • wear analysis
  • influence of thermal/chemical effects on the materials, optimization
  • implementation of AI/ML

Published Papers (2 papers)

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Research

20 pages, 6124 KiB  
Article
Determination of the Feasibility of Using Eco-Friendly Walnut Shell Abrasive Particles for Pocket Milling of Titanium Workpieces by Abrasive Waterjet Technology
by Nikolaos E. Karkalos and Panagiotis Karmiris-Obratański
Metals 2023, 13(10), 1645; https://doi.org/10.3390/met13101645 - 25 Sep 2023
Cited by 1 | Viewed by 774
Abstract
Abrasive waterjet technology is nowadays a well established non-conventional method with significant capabilities for material removal with high productivity and minimum environmental impact compared to other processes. However, in order to be in line with the green transition directives, further steps are required [...] Read more.
Abrasive waterjet technology is nowadays a well established non-conventional method with significant capabilities for material removal with high productivity and minimum environmental impact compared to other processes. However, in order to be in line with the green transition directives, further steps are required to ensure the sustainability of manufacturing processes and reduce the risk of material depletion by employing recyclable materials. For this purpose, an eco-friendly abrasive material such as walnut shell is employed for pocket machining of a titanium alloy workpiece. Due to the relatively low hardness of this material, compared to common abrasive materials such as garnet or alumina, it is required to determine the appropriate range of process parameters in order to obtain high-quality pockets with high productivity. Thus, in this work, a comprehensive experimental study is conducted in order to determine the effect of various process parameters on pocket depth, pocket width, material removal rate, flatness and parallelism error of produced pockets. The results prove the feasibility of using walnut shell as abrasive material for pocket milling, although MRR is almost an order of magnitude lower than the values commonly obtained for usual abrasives. Moreover, it is not recommended to use jet pressure values over 250 MPa so dimensional accuracy, flatness and parallelism error are maintained in acceptable values. Full article
(This article belongs to the Special Issue Advanced Machining Techniques for Metals and Alloys)
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10 pages, 5289 KiB  
Communication
A Method for Preparing AgNWs with Accelerated Seed–Wire Conversion Time
by Xianjie Tang, Guoyou Gan, Xianglei Yu and Junpeng Li
Metals 2023, 13(4), 738; https://doi.org/10.3390/met13040738 - 10 Apr 2023
Cited by 1 | Viewed by 770
Abstract
A synthetic method was developed to produce silver nanowires. The method utilized TBAC (tetrabutylammonium chloride) instead of conventional metal halides as crystal seed additives to obtain purer silver nanowires. Our synthesis strategy relies on accelerating the rate of seed–wire conversion. The method allows [...] Read more.
A synthetic method was developed to produce silver nanowires. The method utilized TBAC (tetrabutylammonium chloride) instead of conventional metal halides as crystal seed additives to obtain purer silver nanowires. Our synthesis strategy relies on accelerating the rate of seed–wire conversion. The method allows for the control of the nanowire aspect ratio by tuning the ratio of Ag+ ions to polyvinylpyrrolidone (PVP) monomer units and the molar mass of TBAC. The observed synthesis improvements meet the basic requirements of current industrial manufacturing. Full article
(This article belongs to the Special Issue Advanced Machining Techniques for Metals and Alloys)
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