Solid-State Processing of Materials

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Tribology".

Deadline for manuscript submissions: closed (31 August 2021) | Viewed by 5246

Special Issue Editor


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Guest Editor
Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY 14850, USA
Interests: additive manufacturing; solid-phase processing; extreme mechanics; tribology
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Special Issue Information

Dear Colleagues,

Solid-phase processing to make coatings, engineer surfaces, and additively manufacture bulk materials has garnered increasing attention for the production of next-generation transformative materials. Solid-state processes include a variety of techniques ranging from friction-stir-based or friction-extrusion-based processes to cold spray coatings, surface and bulk severe plastic deformation processes, and mechanical alloying. Solid-state processes can circumvent metallurgical challenges associated with melt-based processing approaches and in many circumstances lead to enhanced mechanical and tribological properties. Driving forces for the material flow, bonding, welding, and mixing in solid-state approaches are often provided by a thermo-mechanical coupling effect at extreme shear, pressure, and impact conditions. This Special Issue is intended to cover a broad scope of fundamental and applied topics related to solid phase processing, including processing science, deformation mechanisms, microstructural evolution, as well as mechanical and functional properties. Full-length articles, short communications, review papers, and opinion papers are solicited to cover emerging processing approaches, characterization, theory and modeling, as well as novel experimental approaches in the broad area of solid-state processing, coatings, and additive manufacturing. In particular, the topics of interest include, but are not limited to:

  • Process–microstructure–property relationships in solid-state processes
  • Solid-state additive approaches: from coatings to bulk materials;
  • Cold spray, kinetic deposition, aerosol deposition;
  • Surface and bulk severe plastic deformation processes;
  • Friction stir processing/welding, shear-assisted processing and extrusion, friction extrusion;
  • Thermomechanical modeling of solid-phase processing;
  • Deformation mechanisms and microstructural evolution during solid-phase processing;
  • Modeling of severe deformation across length scales;
  • Mechanical and tribological properties of solid phase processed materials.

Dr. Mostafa Hassani
Guest Editor

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Keywords

  • solid-phase processing
  • solid-state additive approaches
  • cold spray
  • friction stir
  • friction extrusion
  • severe plastic deformation
  • deformation mechanisms
  • microstructural evolution
  • thermomechanical modeling

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Published Papers (2 papers)

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Research

21 pages, 9929 KiB  
Article
Wear Behavior of Borided Cold-Rolled High Manganese Steel
by Fatih Hayat and Cihangir Tevfik Sezgin
Coatings 2021, 11(10), 1207; https://doi.org/10.3390/coatings11101207 - 1 Oct 2021
Cited by 10 | Viewed by 2269
Abstract
In this study, a novel high-manganese steel (HMS) was borided at 850, 900 and 950 °C for 2, 4, and 6 h by the pack boriding process. Contrary to previous literature, borided HMS uncommonly exhibited saw-tooth morphology like low alloy steels, and manganese [...] Read more.
In this study, a novel high-manganese steel (HMS) was borided at 850, 900 and 950 °C for 2, 4, and 6 h by the pack boriding process. Contrary to previous literature, borided HMS uncommonly exhibited saw-tooth morphology like low alloy steels, and manganese enhanced the boron diffusion. Another striking analysis is that the “egg-shell effect” did not occur. The present study demonstrated the silicon-rich zone for the first time in the literature by EDX mapping. Moreover, the formation mechanism of silicon-rich zones was explained and termed as “compact transfer of silicones (CTS)”. XRD analysis showed the existence of FeB, Fe2B, MnB and SiC phases. The boriding time and temperature increased the thickness of the boride layer from 31.41 μm to 117.65 µm. The hardness of the borided layer ranged from 1120 to 1915 HV0.05. The activation energy of borided HMS was found to be a very low result compared to high alloy steel investigated in the literature. The Daimler-Benz Rockwell-C adhesion test showed that adhesions of borided HMS surfaces are sufficient. The dry sliding wear tests showed that boriding treatment increased the wear resistance of untreated HMS by 5 times. The present study revealed that the boriding process extended the service life of HMS components. Full article
(This article belongs to the Special Issue Solid-State Processing of Materials)
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7 pages, 26849 KiB  
Article
Nanosecond-Pulse Laser Assisted Cold Spraying of Al–Cu Aluminum Alloy
by Chen Zhang, Dongbin Zhang, Can Luo, Weiping Peng and Xusheng Zang
Coatings 2021, 11(3), 267; https://doi.org/10.3390/coatings11030267 - 25 Feb 2021
Cited by 7 | Viewed by 2215
Abstract
In this study, nanosecond-pulse laser is used in combination with cold spraying to form a hybrid solid-state forming technology: nanosecond-pulse laser assisted cold spraying. This method successfully manufactured Al-Cu high-strength aluminum alloy coatings. The nanosecond-pulse laser reduced the porosity of the coatings. The [...] Read more.
In this study, nanosecond-pulse laser is used in combination with cold spraying to form a hybrid solid-state forming technology: nanosecond-pulse laser assisted cold spraying. This method successfully manufactured Al-Cu high-strength aluminum alloy coatings. The nanosecond-pulse laser reduced the porosity of the coatings. The laser-induced micro-texture on the substrate surface had the ability of improving the bonding strength of the coating-substrate interface. The bonding strength was closely related to the depth of the micro-texture. The deeper micro-texture caused an unfused interface on the bottom of the texture, which produced voids and reduced the bonding strength. The nanosecond-pulse lasers can also increase the hardness of the coatings. The assistance of the nanosecond-pulse laser has proved to be an effective method to improve the quality of cold sprayed metal coatings. Full article
(This article belongs to the Special Issue Solid-State Processing of Materials)
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