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Advanced Technologies for Materials Characterization

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Materials Characterization".

Deadline for manuscript submissions: closed (15 November 2020) | Viewed by 5573

Special Issue Editor


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Guest Editor
University of Manchester, Manchester, United Kingdom
Interests: plasticity; material science; materials characterization; mechanics of materials; theoretical physics; high strain rates; severe plastic deformation; numerical simulations

Special Issue Information

Dear Colleagues,

This Special Issue on “Advanced Technologies for Materials Characterization” is intended to highlight and popularize prominent ideas and methods from the different branches of materials characterization. Recent decades have brought new exciting experimental and computational opportunities with unexpected challenges for all researchers in this area. The set of modern experimental technologies, such as 3D EBSD, HRTEM, high-energy synchrotron tomography, high-speed photography and many others, opened new horizons for investigations of materials at different length scales, from atomic to polycrystalline. This has happened along with increases in computational power, which makes it possible to involve several new theoretical approaches, such as molecular dynamics simulations, big data analysis, or machine learning techniques. All these developments and opportunities allow for a qualitatively new level of understanding of the processes occurring inside the materials under the action of special conditions. Among others, it opened possibilities for the modern state of art investigations of complex dynamical systems.

Studies using modern approaches in material characterization, experimental, theoretical, and computational, are very welcome for this issue. Topics of special interest include the following:

  • Characterization of materials at extreme states of any kind, including high-strain-rate and severe plastic deformation conditions;
  • New experimental techniques in materials characterization;
  • Computational methods for characterization of material structure evolution in complex dynamical processes, including new techniques in molecular dynamics simulation;
  • New methods for characterization of complex material microstructures in composites and biomaterials.
Dr. Elijah Borodin
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

  • Materials characterization
  • Microstructure
  • Extreme states of matter
  • 3D EBSD
  • HRTEM
  • Molecular dynamics simulations

Published Papers (2 papers)

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Research

17 pages, 4391 KiB  
Article
Indentation Induced Mechanical Behavior of Spark Plasma Sintered WC-Co Cemented Carbides Alloyed with Cr3C2, TaC-NbC, TiC, and VC
by Piotr Siwak
Materials 2021, 14(1), 217; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14010217 - 05 Jan 2021
Cited by 6 | Viewed by 2202
Abstract
The focus of this paper is on examining the mechanical behavior of spark plasma sintered WC-Co based composites doped with Cr3C2, TaC-NbC, TiC, and VC, as well as defining some parameters characterizing deformation and fracture processes during hardness measurement. [...] Read more.
The focus of this paper is on examining the mechanical behavior of spark plasma sintered WC-Co based composites doped with Cr3C2, TaC-NbC, TiC, and VC, as well as defining some parameters characterizing deformation and fracture processes during hardness measurement. The calculated microhardness of WC-Co cemented carbides for all the studied compositions is found to be higher than the results obtained during hardness testing. Therefore, the ratio of the experimental and calculated values of microhardness is shown to be an approximate indication of WC-Co cemented carbide sensitivity to damage processes during indentation. Some parameters characterizing the microstructure–microhardness relationship are defined, and the nanomechanical properties of WC-Co cemented carbide phases are examined in order to separate the deformation and fracture processes during the indentation process. Strain gradient linear function parameters are calculated for 10-cycle nanoindentation. It was found that the nanoindentation curve after 10 cycles shows anomalous behavior of the WC grains, which indicates their fracture processes. Full article
(This article belongs to the Special Issue Advanced Technologies for Materials Characterization)
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15 pages, 15674 KiB  
Article
An Experimental Study of Temperature Effect on Properties of Nitride Layers on X37CrMoV51 Tool Steel Used in Extrusion Aluminium Industry
by Rafał Hubicki, Maria Richert and Marcel Wiewióra
Materials 2020, 13(10), 2311; https://0-doi-org.brum.beds.ac.uk/10.3390/ma13102311 - 17 May 2020
Cited by 9 | Viewed by 2992
Abstract
The paper concerns the effect of annealing time and temperature on the properties of the nitride layer on X37CrMoV51 tool steel used in the extrusion aluminium industry. Samples made from X37CrMoV51 steel were hardened and tempered, and then nitrided at 530 °C. After [...] Read more.
The paper concerns the effect of annealing time and temperature on the properties of the nitride layer on X37CrMoV51 tool steel used in the extrusion aluminium industry. Samples made from X37CrMoV51 steel were hardened and tempered, and then nitrided at 530 °C. After nitriding, the samples were annealed in a furnace at 470 °C for 8 h, 12 h, 24 h, 30 h and 60 h, and additionally for 20 h at 270 °C. The samples were tested for structure, hardness and abrasion immediately after nitriding and again after annealing. It was found that annealing the nitrided samples leads to degradation of the nitride layer, accounting for the decrease of hardness. The annealing of the samples at 470 °C, over 12 h causes a decrease in mean hardness value from 1176 HV to 1103 HV, and annealing the samples over 30 h at this temperature leads to a decrease in hardness to 964 HV. The changes in nitrogen content in the white (compound) and diffusion layers and the resulting consequences of changes in phase composition and properties were evaluated. Annealing over 30 h at 470 °C caused the white layer to disappear and the average nitrogen content in the diffusion layer to decrease to the level of about 5–6 at%. Full article
(This article belongs to the Special Issue Advanced Technologies for Materials Characterization)
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