Special Issue "Forming, Structure and Performance of Magnesium Alloy"

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: closed (30 November 2023) | Viewed by 1135

Special Issue Editors

School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China
Interests: Biodegradable Mg alloys; Corrosion behavior; Biocompatibility in vitro and in vivo; Mg alloys used in automobile

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Guest Editor Assistant
School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China
Interests: degradable metals; biomedical magnesium; corrosion

Special Issue Information

Dear Colleagues,

Magnesium alloy is considered to be the best green material in the 21st century due to its low density, high specific strength and stiffness, good damping performance, biodegradation and biocompatibility, large hydrogen-storage capacity, and high theoretical specific capacity for battery applications. It has great application potential in the fields of aerospace, automobiles, the electronics industry, clinical medicine and energy sectors, etc.

However, the relatively low absolute strength, poor plasticity and inferior corrosion resistance of magnesium alloys impede their applications as structural materials, while their fast degradation rate and uneven corrosion hinder their application as implant materials. In addition, the narrow hydrogen charging and discharging window of magnesium alloy also restricts their application in energy storage materials.

This Special Issue of Metals focuses on relationships between forming and microstructure, structure and performance of magnesium alloys. The papers presented in this Special Issue give an account of the scientific and technological state-of-the-art of magnesium alloys in 2022 (see Keywords/Topics below). Your contribution to this Special Issue will be highly valuable and appreciated. We invite you to contribute the research work that studies the relationships between microstructure, mechanical properties, corrosion and coating so as to promote the application of magnesium alloys.

Prof. Dr. Minfang Chen
Guest Editor

Dr. Shaoyuan Lyu
Guest Editor Assistant

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

  • magnesium alloy
  • forming
  • microstructure
  • mechanical properties
  • corrosion behavior
  • damping performance
  • biodegradation
  • biocompatibility

Published Papers (1 paper)

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Research

15 pages, 4126 KiB  
Article
Effect of Pre-Heat Treatment on Microstructure and Properties of As-Extruded AZ91-CaO Alloy
Metals 2022, 12(12), 2060; https://doi.org/10.3390/met12122060 - 29 Nov 2022
Cited by 1 | Viewed by 765
Abstract
The effects of different pre-heat treatments on the microstructure, mechanical properties and corrosion resistance of extruded AZ91 and AZ91-CaO alloys were investigated. The results showed that the microstructure of AZ91 is clearly refined after adding CaO modifier. After solution heat treatment (T4), most [...] Read more.
The effects of different pre-heat treatments on the microstructure, mechanical properties and corrosion resistance of extruded AZ91 and AZ91-CaO alloys were investigated. The results showed that the microstructure of AZ91 is clearly refined after adding CaO modifier. After solution heat treatment (T4), most of the second phase was dissolved into the matrix, while after aging heat treatment (T6), new fine and discontinuous Mg17Al12 were precipitated in both AZ91 and AZ91-CaO alloys. The average grain size of the extruded AZ91-CaO-T6 alloy was 0.9 μm, and the second phase has the smallest size and more uniform dispersion. Therefore, the mechanical properties of AZ91-CaO-T6-EX are optimal, and its ultimate tensile strength, tensile yield strength and elongation reach 367.6 MPa, 320.2 MPa, and 9.5%, respectively. Meanwhile, the electrochemical and salt spray corrosion experiments also showed that the AZ91-CaO-T6-EX alloy had the best corrosion resistance; the self-corrosion potential was −1.08 mV, the corrosion current density was 5.65 μA/cm2, and the annual corrosion rate was 0.36 mm/y after 72 h salt spray treatment. This high corrosion performance was mainly attributed to the dispersed second phase with small size and fine grain size. Full article
(This article belongs to the Special Issue Forming, Structure and Performance of Magnesium Alloy)
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