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Hot Deformation Behavior of Magnesium Alloys

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

Deadline for manuscript submissions: closed (10 April 2024) | Viewed by 2021

Special Issue Editors


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Guest Editor
Institute of Metal Forming, Technische Universität Bergakademie Freiberg, Bernhard-von-Cotta-Straße 4, 09599 Freiberg, Germany
Interests: magnesium alloys; metal forming; twin roll casting; hot rolling; forging; hot deformation behavior; alloy design; recrystallization; texture development; microstructure

E-Mail Website
Guest Editor
Institute of Metal Forming, Technische Universität Bergakademie Freiberg, Bernhard-von-Cotta-Straße 4, 09599 Freiberg, Germany
Interests: magnesium alloys; twin roll casting; hot rolling; hot deformation behavior; alloy design; recrystallization; mechanical properties; texture development; microstructure

Special Issue Information

Dear Colleagues,

Hot deformation is fundamental for magnesium and its alloys. Due to the hexagonal lattice structure and the related limited formability at room temperature, elevated temperatures are required for forming and associated microstructure-changing processes. Factors with significant influence on hot deformation behavior are, for example, the deformation conditions, alloy composition, precipitation state and manufacturing history. A good understanding of hot deformation behavior provides the groundwork for the configuration of hot deformation processes, such as extrusion, rolling and forging. Dynamic recrystallisation processes occur easily in magnesium alloys due to the low stacking fault energy. Knowledge of them and their characteristics enables the control of microstructure and texture developments, as well as the resulting property profile. This Special Issue is aimed at scientists and researchers wishing to contribute to the hot deformation behavior of magnesium alloys, microstructure development and processing at elevated temperatures.

Dr. Madlen Ullmann
Dr. Kristina Kittner
Guest Editors

Manuscript Submission Information

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Keywords

  • hot deformation behavior
  • flow curves
  • hardening and softening mechanisms
  • microstructure evolution
  • formability and workability at elevated temperatures
  • processing maps

Published Papers (1 paper)

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Research

17 pages, 9975 KiB  
Article
Microstructure and Mechanical Properties of Hot-Extruded Mg–Zn–Ga–(Y) Biodegradable Alloys
by Viacheslav Bazhenov, Anna Li, Stanislav Tavolzhanskii, Andrey Bazlov, Natalia Tabachkova, Andrey Koltygin, Alexander Komissarov and Kwang Seon Shin
Materials 2022, 15(19), 6849; https://doi.org/10.3390/ma15196849 - 02 Oct 2022
Cited by 3 | Viewed by 1382
Abstract
Magnesium alloys are attractive candidates for use as temporary fixation devices in osteosynthesis because they have a density and Young’s modulus similar to those of cortical bone. One of the main requirements for biodegradable implants is its substitution by tissues during the healing [...] Read more.
Magnesium alloys are attractive candidates for use as temporary fixation devices in osteosynthesis because they have a density and Young’s modulus similar to those of cortical bone. One of the main requirements for biodegradable implants is its substitution by tissues during the healing process. In this article, the Mg–Zn–Ga–(Y) alloys were investigated that potentially can increase the bone growth rate by release of Ga ions during the degradation process. Previously, the effectiveness of Ga ions on bone tissue regeneration has been proved by clinical tests. This work is the first systematic study on the microstructure and mechanical properties of Mg–Zn–Y alloys containing Ga as an additional major alloying element prepared by the hot-extrusion process. The microstructure and phase composition of the Mg–Zn–Ga–(Y) alloys in as-cast, heat-treated, and extruded conditions were analyzed. In addition, it was shown that the use of hot extrusion produces Mg–Zn–Ga–(Y) alloys with favorable mechanical properties. The tensile yield strength, ultimate tensile strength, and elongation at fracture of the MgZn4Ga4 alloy extruded at 150 °C were 256 MPa, 343 MPa, and 14.2%, respectively. Overall, MgZn4Ga4 alloy is a perspective for applications in implants for osteosynthesis with improved bone regeneration ability. Full article
(This article belongs to the Special Issue Hot Deformation Behavior of Magnesium Alloys)
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