Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
4.9
2.6
Journals
Metals
Special Issues
Recent Advances in Microstructure and Mechanical Properties of High-Strength Steels
share announcement

Recent Advances in Microstructure and Mechanical Properties of High-Strength Steels

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Casting, Forming and Heat Treatment".

Deadline for manuscript submissions: 30 January 2025 | Viewed by 1632

Special Issue Editor

Dr. Atef Saad Hamada

E-Mail Website
Guest Editor
FMT Group Kerttu Saalasti Institute, University of Oulu, Oulu, Finland
Interests: grain boundaries; microstructure; materials engineering; steel; nanomaterials; mechanical engineering; plasticity; mechanical properties; alloys; material characterization
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue aims to provide a platform for the dissemination of the latest research and developments in the field of high-strength steels, with a particular focus on the relationship between microstructure and mechanical properties. High-strength steels are of great importance in various industries, such as automotive, aerospace, and infrastructure, due to their superior strength-to-weight ratio, durability, and cost-effectiveness.

The scope of this Special Issue includes a wide range of topics, including, but not limited to:

- Novel steel compositions and microstructural design strategies for enhanced strength and ductility
- Advancements in thermomechanical processing and heat treatment of high-strength steels
- Characterization techniques for in-depth understanding of microstructural evolution and phase transformations
- Modeling and simulation of microstructure-property relationships in high-strength steels
- Innovative manufacturing and joining techniques for high-strength steel components
- Corrosion and wear behavior of high-strength steels in service environments

Researchers and experts in the fields of steel metallurgy, physical metallurgy, materials engineering, and mechanical engineering are invited to contribute original research articles, review papers, and short communications that address the latest developments and challenges in the microstructure and mechanical properties of high-strength steels.

Dr. Atef Saad Hamada
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

  • high-strength steels
  • microstructure
  • mechanical properties
  • phase transformations
  • thermomechanical processing
  • characterization techniques
  • modeling and simulation

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • e-Book format: Special Issues with more than 10 articles can be published as dedicated e-books, ensuring wide and rapid dissemination.

Further information on MDPI's Special Issue polices can be found here.

Published Papers (2 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

18 pages, 17246 KiB  
Article
Comparative Study of High-Cycle Fatigue and Failure Mechanisms in Ultrahigh-Strength CrNiMoWMnV Low-Alloy Steels
by Atef Hamada, Mohammed Ali, Sumit Ghosh, Matias Jaskari, Tarek Allam, Ruth Schwaiger, Mamdouh Eissa and Taha Mattar
Metals 2024, 14(11), 1238; https://doi.org/10.3390/met14111238 - 29 Oct 2024
Viewed by 634
Abstract
This study provides a thorough analysis of the fatigue resistance of two low-alloy ultrahigh-strength steels (UHSSs): Steel A (fully martensitic) and Steel B (martensitic–bainitic). The investigation focused on the fatigue behaviour, damage mechanisms, and failure modes across different microstructures. Fatigue strength was determined [...] Read more.
This study provides a thorough analysis of the fatigue resistance of two low-alloy ultrahigh-strength steels (UHSSs): Steel A (fully martensitic) and Steel B (martensitic–bainitic). The investigation focused on the fatigue behaviour, damage mechanisms, and failure modes across different microstructures. Fatigue strength was determined through fully reversed tension–compression stress-controlled fatigue tests. Microstructural evolution, fracture surface characteristics, and crack-initiation mechanisms were investigated using laser scanning confocal microscopy and scanning electron microscopy. Microindentation hardness (HIT) tests were conducted to examine the cyclic hardening and softening of the steels. The experimental results revealed that Steel A exhibited superior fatigue resistance compared to Steel B, with fatigue limits of 550 and 500 MPa, respectively. Fracture surface analysis identified non-metallic inclusions (NMIs) comprising the complex MnO-SiO2 as critical sites for crack initiation during cyclic loading in both steels. The HIT results after fatigue indicated significant cyclic softening for Steel A, with HIT values decreasing from 7.7 ± 0.36 to 5.66 ± 0.26 GPa. In contrast, Steel B exhibited slight cyclic hardening, with HIT values increasing from 5.24 ± 0.23 to 5.41 ± 0.31 GPa. Furthermore, the martensitic steel demonstrated superior yield and tensile strengths of 1145 and 1870 MPa, respectively. Analysis of the fatigue behaviour revealed the superior fatigue resistance of martensitic steel. The complex morphology and shape of the NMIs, examined using the 3D microstructure characterisation technique, demonstrated their role as stress concentrators, leading to localised plastic deformation and crack initiation. Full article
(This article belongs to the Special Issue Recent Advances in Microstructure and Mechanical Properties of High-Strength Steels)
►▼ Show Figures

Figure 1

11 pages, 4440 KiB  
Article
Reverse Hall–Petch Effect of Nano-Bainite in a High-Carbon Silicon-Containing Steel
by Xin Zhang, Zixuan Shao, Muqun Sun, Tianyu Cui, Qingsuo Liu and Jian Han
Metals 2024, 14(11), 1225; https://doi.org/10.3390/met14111225 - 27 Oct 2024
Viewed by 627
Abstract
High-strength steels are widely used in various mechanical production and construction industries for their low cost, high strength and high toughness. Among these, bainitic steels have better comprehensive performance relative to martensite and ferrite. In this paper, from the point of view of [...] Read more.
High-strength steels are widely used in various mechanical production and construction industries for their low cost, high strength and high toughness. Among these, bainitic steels have better comprehensive performance relative to martensite and ferrite. In this paper, from the point of view of its microscopic fine structure and mechanical properties, the high-carbon silicon-containing steel Fe-0.99C-1.37Si-0.44Mn-1.04Cr-0.03Ni was austenitized at high temperature after a brief isothermal treatment at 280 °C and is briefly reviewed. We have used EBSD, TEM and 3D-APT to observe a unique transformation in which high-carbon silicon-containing steels form nanostructured bainite with nanometer widths. Intriguingly, as the isothermal duration decreases, the beam bainite width becomes increasingly finer. When the beam bainite width falls below 50 nm, there is a sudden shift in defect type from the conventional edge-type dislocations to a defect characterized by the insertion of a semi-atomic surface in the opposite direction, which leads to different degrees of reduction in the micro- and macro-mechanical properties of high-carbon silicon-containing steels from 1754 MPa to 1667 MPa. This sudden change in the sub-structural properties is typical of the reverse Hall–Petch effect. Full article
(This article belongs to the Special Issue Recent Advances in Microstructure and Mechanical Properties of High-Strength Steels)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-2
Back to TopTop