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Microstructure and Mechanical Properties of Structural Steels and Alloys 2nd Edition

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Metals and Alloys".

Deadline for manuscript submissions: closed (20 February 2024) | Viewed by 957

Special Issue Editors


E-Mail Website1 Website2
Guest Editor
Laboratory of Mechanical Properties of Nanostructured Materials and Superalloys, Belgorod National Research University, Pobeda 85, Belgorod 308015, Russia
Interests: structural steels and alloys; microstructure; grain boundaries; dislocation substructure; deformation and annealing behavior; strength and plasticity
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Laboratory of Mechanical Properties of Nanostructured Materials and Superalloys, Belgorod National Research University, Pobeda 85, Belgorod 308015, Russia
Interests: structural and functional alloys; deformation microstructures; strain hardening; dispersion strengthening; heat treatment; aging; grain growth and recrystallization
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Structural steels and alloys represent a wide domain of materials whose development directly affects human civilization. The mechanical behavior is the principal property of structural steels and alloys. Thus, the mechanical properties of metallic materials depend significantly on their microstructures, including crystallographic and metallographic textures, phase content and particle distribution, dislocation substructure and internal stresses, etc. Therefore, studies on structure–property relationships are of great practical importance. The development of structural steels and alloys with favorable mechanical properties requires a comprehensive investigation of the regularities of microstructure evolution as a function of chemical composition during material processing/manufacturing and various post-processing treatments. The effect of processing regimes/conditions and methods on the microstructures involved in metals and alloys should be studied in detail to supply materials engineers with a deep fundamental and practical knowledge in order to assist the development of advanced structural materials with enhanced mechanical properties. The aim of this Special Issue, “Microstructure and Mechanical Properties of Structural Steels and Alloys”, is to collect the most recent achievements in theoretical and experimental investigations of microstructures and their effect on the mechanical properties of various metallic materials, focusing on advances in the processing and characterization of structural steels and alloys. Papers dealing with experimental investigation, simulation, and analysis of structure–property relationships in structural steels and alloys during exploitation are also welcome.

Dr. Andrey Belyakov
Dr. Anna Bodyakova
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. Materials is an international peer-reviewed open access semimonthly 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

  • structural steels and alloys
  • thermomechanical treatment
  • deformation and annealing behavior
  • microstructures
  • textures
  • phase content
  • dislocation substructures
  • mechanical properties
  • structure–property relationship
  • strength and plasticity

Published Papers (1 paper)

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Research

14 pages, 3474 KiB  
Article
Effect of Pre-Rolling on Microstructure and Fatigue Crack Propagation Resistance of a Third-Generation Al-Li Alloy
by Meng Liu, Xiaoyu Tao, Zhiyu Di, Mengli Qin, Zhiyi Liu and Song Bai
Materials 2023, 16(24), 7540; https://doi.org/10.3390/ma16247540 - 07 Dec 2023
Cited by 1 | Viewed by 766
Abstract
The effect of pre-rolling on the microstructure and fatigue crack (FC) propagation resistance of the Al-Cu-Li alloy was studied using tensile testing, fatigue testing, transmission electron microscopy (TEM), X-ray diffractometer (XRD), and scanning electron microscopy (SEM). The results revealed that reducing the alloy [...] Read more.
The effect of pre-rolling on the microstructure and fatigue crack (FC) propagation resistance of the Al-Cu-Li alloy was studied using tensile testing, fatigue testing, transmission electron microscopy (TEM), X-ray diffractometer (XRD), and scanning electron microscopy (SEM). The results revealed that reducing the alloy thickness through pre-rolling by up to 12% enhanced both tensile strength and yield strength, albeit at the expense of reduced elongation. In addition, the FC growth rate decreased by up to 9% pre-rolling, reaching the minimum, while the application of additional mechanical stress during the pre-rolling increases this parameter. Deformations in the Al-Cu-Li alloy with less than a 9% thickness reduction were confined to the surface layer and did not extend to the central layer. This non-uniform deformation induced a compressive stress gradient in the thickness direction and led to an inhomogeneous distribution of T1 phase, resembling the structure generated by shot peening. The superior FC propagation resistance in the 9% pre-rolled alloy could be primarily attributed to the optimum balance of compressive residual stress and work hardening. Full article
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