Special Issue "Mechanical Behavior of Nanocrystalline Alloys"

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Crystal Engineering".

Deadline for manuscript submissions: 30 September 2020.

Special Issue Editors

Dr. Julian M. Rosalie
Website
Guest Editor
University of Leoben, Leoben, Austria
Interests: Microstructural characterisation; Severe plastic deformation; Solid-state phase transformations
Dr. Oliver Renk

Guest Editor
Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Leoben, Austria
Interests: nanomaterials; mechanical properties; grain boundaries and interfaces

Special Issue Information

Dear Colleagues,

Extensive research over the past two decades has lead to great advances in nanostructured alloys. Remarkable levels of hardness and strength have been demonstrated in a wide range of metals and alloys through both top-down and bottom-up production techniques. Significant progress has also been made in stabilising the grain structure and hence mechanical properties at higher temperatures via thermodynamic and kinetic approaches.  This Special Issue of Crystals considers the current understanding of mechanical properties in nanostructured alloys. The scope includes experimental and theoretical studies of nanocrystalline alloys, whether model or industrial systems. This special edition welcomes submissions that present detailed characterisation of the microstructure and its relation to the mechanical properties in addition to studies that address issues relating to controlling and optimising the mechanical behaviour of metallic nanocrystalline systems through alloying, processing and/or subsequent post-processing. This special edition will focus on moving beyond optimising hardness or yield strength alone, towards developing nanocrystalline materials which have a balance of the properties required for real-world applications including, but not limited to properties such as ductility, work hardening, fracture toughness and creep resistance.  

Dr. Julian M. Rosalie
Dr. Oliver Renk
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 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. Crystals 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 1600 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

  • Nanocrystalline alloys
  • Ultrafine-grained materials
  • Structure-property relationships
  • Mechanical properties
  • Materials characterisation

Published Papers (1 paper)

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Research

Open AccessArticle
Microstructures and Mechanical Properties of Nanocrystalline AZ31 Magnesium Alloy Powders with Submicron TiB2 Additions Prepared by Mechanical Milling
Crystals 2020, 10(6), 550; https://doi.org/10.3390/cryst10060550 - 26 Jun 2020
Abstract
In this work, nanocrystalline AZ31 magnesium alloy powders, reinforced by submicron TiB2 particles, were prepared via mechanical milling. It was found that TiB2 particles stimulated the fracture and welding of AZ31/TiB2 powders, leading to the acceleration of the milling process. [...] Read more.
In this work, nanocrystalline AZ31 magnesium alloy powders, reinforced by submicron TiB2 particles, were prepared via mechanical milling. It was found that TiB2 particles stimulated the fracture and welding of AZ31/TiB2 powders, leading to the acceleration of the milling process. Meanwhile, the TiB2 particles were refined to submicron-scale size during the milling process, and their distribution was uniform in the Mg matrix. In addition, the matrix was significantly refined during the milling process, which was also accelerated by the TiB2 particles. The formation of grain boundary segregation layers also led to the weakened TiB2 peaks in the XRD patterns during the mechanical milling. The grain sizes of AZ31–2.5 wt % TiB2, AZ31–5 wt % TiB2 and AZ31–10 wt % TiB2 powders were refined to 53 nm, 37 nm and 23 nm, respectively, after milling for 110 h. Under the combined effect of the nanocrystalline matrix and the well-dispersed submicron TiB2 particles, the AZ31/TiB2 composites exhibited excellent micro-hardness. For the AZ31–10 wt % TiB2 composite, the micro-hardness was enhanced to 153 HV0.5. Full article
(This article belongs to the Special Issue Mechanical Behavior of Nanocrystalline Alloys)
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