Advances in Powder Metallurgy II

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Powder Metallurgy".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 2878

Special Issue Editor


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Guest Editor
Faculty of Mechanical Engineering and Management, Institute of Materials Science and Engineering, Poznan University of Technology, 60-965 Poznan, Poland
Interests: mechanochemical material synthesis; innovative approach in powder sintering; nano objects synthesis and sintering; metal-based nanocomposites; surface functionalization
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Special Issue Information

Dear Colleagues,

The increasing market share of sintered materials that at the same time reduce the use of traditional manufacturing technologies remains a clearly noticeable trend and evident source of development of new materials and technologies. Advances in powder metallurgy, including control and characterization of the material in all processing steps with analysis of its final properties, are the scope for this Special Issue. Since the very beginning, powder metallurgy methods have been used for the manufacturing of materials where other technologies of shaping of properties could not be applied. The advantages of the method quickly attracted new consumers, expanding its potential application to the group of metals, their alloys, and composite structures. The high purity of powders controlled at the stage of their production, together with the possibility of affecting their size and morphology that determines the end properties of products, have made powder metallurgy in new material markets highly attractive. For the abovementioned reasons, the process of sinter production by itself is not meaningless, instead staying significant for the final obtained material structure. The process, realized either in stages or all at once and based on force value control and temperature field operation as well as other factors that include an influence of innovative current flow, microwave radiation or lasers in incremental-technologies-assisted processes, allows obtaining fully compacted materials without requiring an additional post-processing operation.

In this Special Issue, we welcome articles that focus on material preparation methods and their influence on final products’ performance both from the powder stage and/or compaction stadium. Fully controllable fast and low-cost processes remain of particular interest, with a high implementation potential in advanced powder metallurgy that allows producing high-performance products.

Prof. Dr. Andrzej Miklaszewski
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. 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 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

  • powder metallurgy
  • mechanical alloying
  • hot pressing
  • isostatic sintering
  • field-assisted sintering
  • microwave-assisted sintering
  • laser-assisted sintering
  • structural characterization

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Published Papers (1 paper)

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Research

15 pages, 6837 KiB  
Article
Effect of Heat Treatment Prior to Direct Hot-Extrusion Processing of Al–Cu–Li Alloy
by Paula Rodríguez-González, Elisa María Ruiz-Navas and Elena Gordo
Metals 2022, 12(6), 1046; https://doi.org/10.3390/met12061046 - 19 Jun 2022
Cited by 6 | Viewed by 2402
Abstract
This study presents and explains the results of the first steps in developing high strength aluminium alloy (Al–Cu–Li) wires for the ultimate purpose of using them as feedstock for DED (directed energy deposition) techniques, such as wire arc additive manufacturing (WAAM). Powder metallurgy [...] Read more.
This study presents and explains the results of the first steps in developing high strength aluminium alloy (Al–Cu–Li) wires for the ultimate purpose of using them as feedstock for DED (directed energy deposition) techniques, such as wire arc additive manufacturing (WAAM). Powder metallurgy (PM) is proposed as the method to produce the wires due to the high flexibility to adapt the composition and the lower temperatures used with respect to casting. Two PM routes are proposed. The first route comprises blending of the powders, uniaxial pressing, and hot extrusion of the green compact to obtain a bar; the second route includes a heat treatment of the green compact, to promote the diffusion of the alloying elements before hot extrusion. Further steps, such as rolling or drawing, are necessary to obtain the wire from the bar. This work studies the effects of the processing parameters on the properties of extruded bars and compares the results of the two routes employed, with special attention paid to the effects of heat treatment. The study confirms that heat treatment homogenises the microstructure and requires higher applied extrusion force and time. The results from characterisation show the presence of Al–Cu and Al–Cu–Li phases in the microstructure. Full article
(This article belongs to the Special Issue Advances in Powder Metallurgy II)
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