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Metals
Special Issues
Mechanical Properties of Deformed Alloys and Compounds
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Mechanical Properties of Deformed Alloys and Compounds

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

Deadline for manuscript submissions: closed (1 July 2021) | Viewed by 10563

Special Issue Editors

Dr. Joan Josep Roa

E-Mail Website
Guest Editor
Steros GPA Innovative S.L, R&D Department - Test Lab, C/Maracaibo 1, Naus 2-6, 08030 Barcelona, Spain
Interests: 3D printing process; microstructural design; advanced characterization techniques; mechanical properties; plastic deformation mechanisms
Special Issues, Collections and Topics in MDPI journals
Dr. Sebastian Suarez

E-Mail Website
Guest Editor
Department of Materials Science, Saarland University, 66123 Saarbrücken, Germany
Interests: advanced materials characterization; mechanical and tribological behavior of composite materials; electrical behavior of C-reinforced composites; nano C-based protective coatings
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Plastic deformation is an effective technique for producing bulk metals with tailored properties. Recently, severe plastic deformation (SPD) techniques have attracted much attention due to their ability to fabricate ultrafine or nanostructured materials. Manufacturing this kind of materials is an important advance in materials research due to their outstanding strength and their usually limited uniform elongation compared to coarse-grained counterparts, as indicated by the well-known Hall–Petch relationship. In this sense, improving the mechanical properties of structural metals has been extensively reported. It is commonly accepted that pre-deformation greatly affects the deformation behaviors of metals. However, one significant drawback of the achieved structures is their limited thermal stability as a consequence of their highly unstable substructural features.

In this Special Issue, an open access forum is provided for contributing to the investigation of different aspects of alloy steels. Researchers may share their findings on the latest ongoing research and development activities, on the current state-of-the-art, and also on prior history. Both research papers and reviews are highly welcome.

The Special Issue will include (but not be limited to) the following topics: correlation between mechanical properties and microstructure of highly deformed alloys and compounds; microstructures and their development, including phase equilibrium and transformations; thermomechanical stability; mechanical performance, with strength, toughness, impact, and fatigue behavior; and formability, covering rolling, stamping, welding, among others.

 

Dr. Joan Josep Roa Rovira
Dr. Sebastian Suarez
Guest Editors

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

  • Metallic alloys
  • Deformed alloys
  • Plastic deformation mechanisms
  • Mechanical properties
  • Phase transformation
  • Strength
  • Heat treatments
  • Microstructure
  • Hall–Petch
  • Indentation size effect

Published Papers (4 papers)

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Research

24 pages, 41550 KiB  
Article
Characterization Study of an Oxide Film Layer Produced under CO2/Steam Atmospheres on Two Different Maraging Steel Grades
by Mauro Andres Cerra Florez, Gemma Fargas Ribas, Joan Josep Roa Rovira, Enrique Vilarrasa-Garcia, Enrique Rodríguez-Castellon, Ana Beatriz Ferreira Sousa, Jorge Luiz Cardoso and Marcelo José Gomes da Silva
Metals 2021, 11(5), 746; https://0-doi-org.brum.beds.ac.uk/10.3390/met11050746 - 01 May 2021
Cited by 5 | Viewed by 1799
Abstract
Currently, surface treatments lead to inducing a superficial layer of several nanometers up to micrometer, which in some cases can be protective. In this experimental work, an oxide layer was generated under different atmospheres (CO2 and steam atmospheres) during the thermal aging [...] Read more.
Currently, surface treatments lead to inducing a superficial layer of several nanometers up to micrometer, which in some cases can be protective. In this experimental work, an oxide layer was generated under different atmospheres (CO2 and steam atmospheres) during the thermal aging treatment of two different maraging grades, 300 and 350. Afterwards, this layer was microstructural and mechanically characterized by advanced characterization techniques at the micro- and submicron length scale to highlight some information related to the generated oxide layer. The results showed that the oxide layer (in both grades) was made up of several compounds like: TiO2, MoO3, hematite (α-Fe2O3), and CoFe2O4, this being the majority compound distributed homogeneously throughout the layer. Furthermore, a nickel-rich austenitic phase at the interphase was mainly made up cobalt ions (Co2+), instead of iron ions (Fe2+), within the spinel lattice. Full article
(This article belongs to the Special Issue Mechanical Properties of Deformed Alloys and Compounds)
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19 pages, 7253 KiB  
Article
Experimental Correlation of Mechanical Properties of the Ti-6Al-4V Alloy at Different Length Scales
by Víctor Tuninetti, Andrés Felipe Jaramillo, Guiomar Riu, Carlos Rojas-Ulloa, Amna Znaidi, Carlos Medina, Antonio Manuel Mateo and Joan Josep Roa
Metals 2021, 11(1), 104; https://0-doi-org.brum.beds.ac.uk/10.3390/met11010104 - 07 Jan 2021
Cited by 25 | Viewed by 2926
Abstract
This article focuses on a systematic study of a Ti-6Al-4V alloy in order to extensively characterize the main mechanical properties at the macro-, micro- and submicrometric length scale under different stress fields. Hardness, elastic modulus, true stress–strain curves and strain-hardening exponent are correlated [...] Read more.
This article focuses on a systematic study of a Ti-6Al-4V alloy in order to extensively characterize the main mechanical properties at the macro-, micro- and submicrometric length scale under different stress fields. Hardness, elastic modulus, true stress–strain curves and strain-hardening exponent are correlated with the intrinsic properties of the α- and β-phases that constitute this alloy. A systematic characterization process followed, considering the anisotropic effect on both orthogonal crystallographic directions, as well as determining the intrinsic properties for the α-phase. An analytical relationship was established between the flow stress determined under different stress fields, testing geometries and length scales, highlighting that it is possible to estimate flow stress under compression and/or tensile loading from the composite hardness value obtained by instrumented nanoindentation testing. Full article
(This article belongs to the Special Issue Mechanical Properties of Deformed Alloys and Compounds)
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12 pages, 5701 KiB  
Article
Superficial Effects of Ball Burnishing on TRIP Steel AISI 301LN Sheets
by Ramón Jerez-Mesa, Gemma Fargas, Joan Josep Roa, Jordi Llumà and J. Antonio Travieso-Rodriguez
Metals 2021, 11(1), 82; https://0-doi-org.brum.beds.ac.uk/10.3390/met11010082 - 03 Jan 2021
Cited by 16 | Viewed by 1837
Abstract
This paper explores the consequences of applying an ultrasonic vibration-assisted ball burnishing process and its non-vibration assisted version on the topology and subsurface microstructure of a transformation-induced plasticity AISI 301LN alloy. More specifically, four different metallographic conditions provided as 1.5-mm thickness sheets and [...] Read more.
This paper explores the consequences of applying an ultrasonic vibration-assisted ball burnishing process and its non-vibration assisted version on the topology and subsurface microstructure of a transformation-induced plasticity AISI 301LN alloy. More specifically, four different metallographic conditions provided as 1.5-mm thickness sheets and characterized by different starting martensite content (3, 10, 20 and 40 wt.%) are included in the study. Ball burnishing was performed along the lamination direction and perpendicular to it. Results show that the effect of ball burnishing is strongly correlated with the pre-existing microstructure. The steel containing the lowest quantity of initial martensite is the most affected by the process, achieving a higher residual hardening effect, similar to the untreated steel with an original martensitic content of around 40 wt.%. Moreover, the process succeeds in generating a 100-nm thick nanograin layer under the plate subsurface. Finally, no conspicuous effect of the application of vibration assistance was observed, which encourages the application of alternative measurement techniques in future works to define its effect on the properties after being ball burnished. Full article
(This article belongs to the Special Issue Mechanical Properties of Deformed Alloys and Compounds)
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15 pages, 6678 KiB  
Article
Novel Mechanical Characterization of Austenite and Ferrite Phases within Duplex Stainless Steel
by Hossein Besharatloo, Marcel Carpio, José-María Cabrera, Antonio Manuel Mateo, Gemma Fargas, Jeffrey Martin Wheeler, Joan Josep Roa and Luis Llanes
Metals 2020, 10(10), 1352; https://0-doi-org.brum.beds.ac.uk/10.3390/met10101352 - 10 Oct 2020
Cited by 25 | Viewed by 3158
Abstract
The microstructure and micromechanical properties of the constitutive phases of a particular duplex stainless steel in various processing conditions have been characterized. Hardness (H), elastic modulus (E) and H/E cartography maps were obtained by using a high-speed [...] Read more.
The microstructure and micromechanical properties of the constitutive phases of a particular duplex stainless steel in various processing conditions have been characterized. Hardness (H), elastic modulus (E) and H/E cartography maps were obtained by using a high-speed nanoindentation mapping technique. Small-scale H and E evolution at different processing conditions has been investigated by statistical analysis of a large number of nanoindentations (10,000 imprints per sample). Two mechanically distinct phases, ferrite (α) and austenite (γ), were deconvoluted from this dataset using Ulm and Constantinides’ method, with the remaining values assigned to a third mechanical phase linked to composite-like (containing α/γ interphase boundaries) regions. These mechanical property phase assessments were supplemented by overlaying crystallographic phase maps obtained by electron backscattered diffraction. An excellent correlation between microstructure and small-scale mechanical properties was achieved, especially when considering the ratio H/E. Full article
(This article belongs to the Special Issue Mechanical Properties of Deformed Alloys and Compounds)
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