Special Issue "Advances in Ultrafine-Grained Metals Research"

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

Deadline for manuscript submissions: 20 March 2020.

Special Issue Editor

Guest Editor
Prof. Marcello Cabibbo

DIISM—Department of Industrial Engineering and Mathematics, Università Politecnica delle Marche, Via Brecce Bianche—60131, Ancona, Italy
Website | E-Mail
Interests: light alloys (aluminum, magnesium, and titanium); steels (carbon-steels, HSLA, TRIP, TWIP, stainless-steels, and tool-steels); superalloys (Co-based); nanostructured coatings (DLC, N-based, and B-based); severe plastic deformation techniques (ECAP, HPT); hot-deformation (creep, hot torsion); TEM; FEGSEM; XRD; nanoindentation

Special Issue Information

Dear Colleagues,

This Special Issue aims at presenting the state-of-the-art, and new concepts and principles of UFG obtained by both a top-down approach (SPD) and a bottom-up approach (BM and SPS). In recent years, much progress has been made in the filling of UFG metallic materials for advanced structural and functional use. The newest achievements are mainly associated with the development of novel technological processes for the fabrication of bulk UFG materials using severe plastic deformation (SPD) techniques, and the investigation of fundamental mechanisms leading to improved properties. Great scientific and technologic interest is based on the fact that grain size can be regarded as a key microstructural factor affecting nearly all aspects of the physical and mechanical behaviour of polycrystalline metals. Hence, control over grain size has long been recognized as a way to design materials with desired properties. Most of the mechanical and chemical-physical properties benefit greatly from grain size reduction. As the race for better materials performance is never ending, attempts to develop viable techniques for microstructure refinement continue. The contributions of the present Special Issue include the different major techniques nowadays in use to produce sound and reliable UFG metallic materials. These include light alloys and steels.

Prof. Marcello Cabibbo
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 1500 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

  • Ultrafine-grained metals
  • Severe Plastic Deformation (SPD)
  • Top-down approach
  • Bottom-up approach
  • Equal-Channel Angular Pressing (ECAP)
  • Hot-Pressure Torsion (HPT)
  • Accumulative Roll Bonding (ARB)
  • Ball Milling (BM)
  • Spark-Plasma Sintering (SPS)

Published Papers (1 paper)

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Research

Open AccessArticle
Grain Size Effect on the Mechanical Behavior of Metastable Fe-23Cr-8.5Ni Alloy
Metals 2019, 9(7), 734; https://doi.org/10.3390/met9070734
Received: 3 June 2019 / Revised: 19 June 2019 / Accepted: 25 June 2019 / Published: 29 June 2019
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Abstract
An Fe-23Cr-8.5Ni alloy was used as a model material to study the grain size effect on the mechanical behavior of metastable duplex metal. Alloy samples with different grain sizes ranging from 0.1 to 2 μm were prepared by cold-rolling and annealing. A structural [...] Read more.
An Fe-23Cr-8.5Ni alloy was used as a model material to study the grain size effect on the mechanical behavior of metastable duplex metal. Alloy samples with different grain sizes ranging from 0.1 to 2 μm were prepared by cold-rolling and annealing. A structural refinement to about 0.1 μm results in a high yield strength but very limited ductility. A significant improvement of ductility occurred at the grain size of about 0.4 μm. A further increase in grain size results in a decreased strength and a slightly improved ductility. The alloy with a grain size of about 0.4 μm exhibits an excellent combination of strength and ductility, where the yield strength and tensile elongation are increased up to 738 MPa and 29% as compared to 320 MPa and 33% of a coarse-grained (about 2 μm) sample, respectively. The origin of the excellent mechanical properties was attributed to the unique deformation characteristics associated with the transformation induced plasticity and the development of back stress. Full article
(This article belongs to the Special Issue Advances in Ultrafine-Grained Metals Research)
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