Special Issue "Tool Steels"

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

Deadline for manuscript submissions: 30 November 2019

Special Issue Editor

Guest Editor
Prof. Paolo Matteis

Department of Applied Science and Technology, Politecnico di Torino, Torino, Italy
Website | E-Mail
Interests: steels; aluminum alloys; microstructures; heat treatments; processing and welding technologies; mechanical behavior (including quasi-static, cyclic, and dynamic properties)

Special Issue Information

Dear Colleagues,

Ferrous tools have been fabricated from the very beginning of the iron age, and tools, including weapons, were, for millennia, the main applications of iron alloys.

However, the development of the main contemporary tool steel classes started in the second half of the 19th century, together with an earlier scientific understanding of the relationships among processing, microstructure and performance, and has continued ever since, greatly contributing to the progress of manufacturing technologies.

For a long time, the development of tool steels has been focused on strength, toughness and fatigue performance, at the relevant service temperatures, and, therefore, on steelmaking and forming technologies and on final heat treatments, which has allowed to achieve such performances. Furthermore, in more recent times, considerable efforts have been devoted to processing by means of powder metallurgy, surface modification, and additive manufacturing techniques.

In this Special Issue, we will seek to provide a set of articles on various aspects of tool steels, including both research papers and review papers, informing readers on the latest ongoing research and development activities, on the current state-of-the-art, and on prior history.

The Special Issue will seek to encompass (but will not be limited to) the following topics: elemental composition, including standard and innovative grades; production methods, including bulk steelmaking, powder metallurgy, and additive manufacturing; microstructures and their development, including phase equilibria and transformations, thermal stability, and heat treating; bulk mechanical performance, including strength, toughness, fracture mechanics, and fatigue behavior, at relevant service temperatures and loading rates; wear behavior; surface modification technologies, including thermo-chemical surface transformation techniques, PVD and CVD coating methods, and their performance; resistance to environmental degradation, including wet and hot corrosion, hydrogen embrittlement, and interaction with liquid metals; economic, industrial and societal impact; and history.

Prof. Paolo Matteis
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 1200 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

  • Tool steels
  • Steelmaking
  • Powder metallurgy
  • Additive manufacturing
  • Mechanical performance
  • Fracture mechanics
  • Fatigue & thermal fatigue
  • Surface modification
  • Environmental degradation

Published Papers (1 paper)

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Research

Open AccessArticle Effect of the Parameters of Semi-Solid Processing on the Elimination of Sharp-Edged Primary Chromium Carbides from Tool Steel
Metals 2018, 8(9), 713; https://doi.org/10.3390/met8090713
Received: 26 July 2018 / Revised: 6 September 2018 / Accepted: 7 September 2018 / Published: 12 September 2018
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Abstract
Although conventional tool steels have been heat treated on a routine basis for decades, the search continues for new ways to eliminate their troublesome sharp-edged primary chromium carbides, which impair toughness. One of the available techniques is semi-solid processing, which involves partial melting
[...] Read more.
Although conventional tool steels have been heat treated on a routine basis for decades, the search continues for new ways to eliminate their troublesome sharp-edged primary chromium carbides, which impair toughness. One of the available techniques is semi-solid processing, which involves partial melting of the workpiece. The structure after semi-solid processing consisted of a austenite and carbide-austenite network. The network can be broken up and its fragments distributed uniformly by subsequent forming with appropriate parameters. In this experimental study, X210Cr12 tool steel was heated to a semi-solid state, and after cooling to a solid state, worked in a hydraulic press. Suitable soaking temperatures were sought within an interval between 1200 °C and 1280 °C. The workpieces were quenched from the forming temperature in water or oil. In order to improve formability and reduce hardness, tempering was tested as well. Additional experimental regimes included conventional quenching and tempering. Once the appropriate parameters were chosen, the elimination of primary chromium carbides was successful. The resultant microstructures were fine and consisted of M-A constituent with a size of approximately 1 μm, and very fine Fe3C and Cr7C3 carbides. The hardness was in excess of 800 HV10. They were examined using optical and scanning electron microscopes. The carbides were characterized on transparent foils in a transmission electron microscope. Mechanical characteristics were determined in micro-tensile tests. Full article
(This article belongs to the Special Issue Tool Steels)
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