Special Issue "Titanium Alloys"

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

Deadline for manuscript submissions: 31 December 2014

Special Issue Editor

Guest Editor
Dr. M.T. Whittaker
University of Wales Swansea, Singleton Park, Swansea SA2 8PP, UK
Website: http://www.researchperspectives.org/person/-130032/Dr-MT-Whittaker-Swansea-University
E-Mail: m.t.whittaker@swansea.ac.uk

Special Issue Information

Dear Colleagues,

Although titanium was originally discovered in the 18th century, significant developments in the titanium industry only occurred in the middle of the 20th century. These changes resulted from the emergence of the gas turbine engine. Since that time, the aerospace sector has dominated worldwide titanium use; the metal has applications in both engines and airframe structures. Titanium has a highly desirable combination of properties: these include excellent corrosion resistance, a high strength to weight ratio, and good fatigue resistance. Such qualities enable extensive applications; only high extraction and processing costs restrict further implementation.

Although the aerospace industry faces challenges related to increasing operating temperatures and the development of polymer based composites, innovative solutions, including metal matrix composites and titanium aluminides, provide pathways for future development. Furthermore, improvements in extractive metallurgy and processing methods have made titanium-based alloys more accessible to alternative industries. Industries currently utilizing these materials include the sports, biomedical, and marine sectors.

As more traditional applications are supplemented by exciting new opportunities, it is clear that extensive research opportunities are likely to exist in the titanium industry for the foreseeable future.

Dr. M.T. Whittaker
Guest Editor

Submission

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. Papers will be published continuously (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as 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 refereed through a 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 quarterly 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 300 CHF (Swiss Francs). English correction and/or formatting fees of 250 CHF (Swiss Francs) will be charged in certain cases for those articles accepted for publication that require extensive additional formatting and/or English corrections.

Keywords

  • extractive metallurgy processing
  • microstructure evolution
  • properties
  • intermetallics
  • MMCs
  • aerospace
  • biomedical

Published Papers (1 paper)

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p. 335-358
by  and
Metals 2014, 4(3), 335-358; doi:10.3390/met4030335
Received: 9 May 2014; in revised form: 19 June 2014 / Accepted: 30 June 2014 / Published: 7 July 2014
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Titanium Matrix Composite Ti/TiN produced by diode laser gas nitriding
Author: Aleksander Lisiecki
Affiliation: Silesian University of Technology, Welding Department, Konarskiego 18A, 44-100 Gliwice, Poland
Abstract: The high power direct diode laser, emitting in a range of near infrared radiation at wavelength 808 to 940 nm, was applied for producing the titanium matrix composite on surface layer of titanium alloy Ti6Al4V by laser surface gas nitriding. The nitrided surface layers were produced as single stringer beads at different heat input, different scanning speed, and different power of laser beam. The influence of laser nitriding parameters on quality, shape and morphology of the surface layers was investigated. It was found that the nitrided surface layers consists of titanium nitrides precipitations mainly in form of dendrites embedded in the titanium alloy matrix. The titanium nitrides are produced as a result of the reaction between molten Ti and gaseous nitrogen. Solidification and subsequent growth of the TiN dendrites takes place at the interface of molten Ti and nitrogen gas atmosphere to a large extent. The direction of TiN dendrites growth is perpendicular to the surface of molten Ti. Roughness of surface layers depends strongly on the heat input of laser nitriding and can be precisely controlled. In spite of high microhardness up to 2400 HV0.2, the surface layers are crack free.
Keywords: titanium; nitrides; composite; laser; nitriding

Last update: 20 October 2014

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