Special Issue "Heat Treatment and Mechanical Properties of Metals and Alloys"

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

Deadline for manuscript submissions: 31 January 2021.

Special Issue Editor

Dr. Mariusz Król
E-Mail Website
Guest Editor
Department of Engineering Materials and Biomaterials, Silesian University of Technology, 44-100 Gliwice, Poland
Interests: thermal analysis; mechanical properties; casting; alloy

Special Issue Information

Dear Colleagues,

The main factors contributing to the functional properties of a metallic material are its chemical composition and the applied technologies which affect the material both directly and indirectly through its structure. Complex relationships exist not only between a technology and a material structure, but also between a material structure and its properties, including the behavior of metallic materials. The structure of a material, as a factor subject to a very wide range of changes and modifications, is important in shaping the material’s properties. The properties of metallic materials can be divided into those that are sensitive to changes in the material’s structure and those that do not show particular sensitivity to these changes. In general terms, heat treatment is a technological process that changes the mechanical and physicochemical properties of metals and solid alloys by causing changes of the structure that are mainly a function of temperature, time, and environmental conditions. Modern technology has specific requirements for the used materials. Also, metallic materials should be employed wisely in conditions that allow the optimal use of their potential functional properties. Heat treatment, to a certain extent, provides these conditions to metallic materials, shaping their structure both in their entire volume and on their surface. Any shortcomings in heat treatment technology negatively affect the properties of the finished products or the further production phase.

In this Special Issue, we seek to provide a wide set of articles on various aspects of heat treatment and thermal treatment and on the mechanical properties of metals and alloys. The idea is to demonstrate the power of heat treatment and how it influences the properties of metals and alloys. It is hoped that this open-access issue will provide a place for anyone to familiarize with the current state of the art in this field. Articles on heat treatment and thermal processing methods, thermomechanical treatment, cryogenic treatment, metallurgy, characterization, and evaluation of metallic materials are welcome.

Dr. Mariusz Król
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 papers will be 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 1600 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

  • heat treatment
  • thermal treatment
  • thermomechanical treatment
  • metallurgy
  • microstructure
  • mechanical property
  • metals
  • alloys

Published Papers (2 papers)

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Research

Open AccessArticle
Effect of Heat Treatment on Microstructure and Mechanical Properties of Mg-5Zn-1Mn Alloy Tube
Metals 2020, 10(3), 301; https://doi.org/10.3390/met10030301 - 26 Feb 2020
Abstract
The effects of heat treatment on the microstructure, mechanical properties and electrochemical property of the as-extruded Mg-5Zn-1Mn (ZM51) alloy tube are investigated by optical microstructure (OM), X-ray diffractometer (XRD), scanning electron microscopy (SEM), transmission electrical microscope (TEM), uniaxial tensile test, and electrochemical test. [...] Read more.
The effects of heat treatment on the microstructure, mechanical properties and electrochemical property of the as-extruded Mg-5Zn-1Mn (ZM51) alloy tube are investigated by optical microstructure (OM), X-ray diffractometer (XRD), scanning electron microscopy (SEM), transmission electrical microscope (TEM), uniaxial tensile test, and electrochemical test. The results show that the as-cast structure is a typical dendritic structure, mainly composed of α-Mg and Mg7Zn3 eutectic compounds. After homogenization, most of Mg7Zn3 eutectic phases are dissolved in the Mg matrix. During the extrusion process, the ZM51 alloy has undergone complete dynamic recrystallization and has a good elongation, reaching 21.4%. T6, especially T4 + double aging treatment, can significantly improve the mechanical properties of the as-extruded tube. The microstructure reveals that the precipitation strengthening of the finely dispersed MgZn2 precipitates is the main reason for the strength increase. The fracture micromorphology of the as-extruded tube is mainly composed of dimples and cleavage facets, which is a typical ductile fracture. The fracture mode of the as-aged alloy tubes belongs to cleavage fracture. In addition, the electrochemical test results show the solution-treated ZM51 alloy tube has the best corrosion resistance. The improvement of corrosion resistance is mainly due to the microstructure uniformity and low phase volume fraction. Full article
(This article belongs to the Special Issue Heat Treatment and Mechanical Properties of Metals and Alloys)
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Open AccessArticle
Quantitative Relationships between Mechanical Properties and Microstructure of Ti17 Alloy after Thermomechanical Treatment
Metals 2020, 10(1), 67; https://doi.org/10.3390/met10010067 - 01 Jan 2020
Abstract
In this paper, the relationships between the thermomechanical treatments (TMT), the microstructural evolution the mechanical properties of Ti17 alloy were investigated. The results indicate the coarsening behavior of lamellar α was sensitive to the aging temperature during the process of TMT. The thickness [...] Read more.
In this paper, the relationships between the thermomechanical treatments (TMT), the microstructural evolution the mechanical properties of Ti17 alloy were investigated. The results indicate the coarsening behavior of lamellar α was sensitive to the aging temperature during the process of TMT. The thickness of lamellar α changed from 0.19 to 0.38 μm with an increase in the aging temperature. Moreover, both tensile properties and impact toughness vary with the thickness of lamellar α. The tensile strength increases with the increase of the thickness of lamellar α the plasticity and impact toughness the opposite trend. The quantitative investigations found that there is a linear relationship between the tensile properties and the thickness of lamellar α the tensile properties could be adjusted in the range of 1191~1062 MPa and 1163~1039 MPa to obtain ultimate tensile strength and yield strength as well as 11~16% elongation and 23~33% reduction of area by varying the thickness of lamellar α. Meanwhile, the impact toughness could be adjusted in the range of 46 ~53 J/cm2. The high correlation coefficients imply that the linear equation is reliable to describe the relationships between the mechanical properties and the thickness of lamellar α for Ti17 alloy. Full article
(This article belongs to the Special Issue Heat Treatment and Mechanical Properties of Metals and Alloys)
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