Solidification and Phase Transformation of Light Alloys

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: 31 May 2025 | Viewed by 183

Special Issue Editor


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Guest Editor
School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650000, China
Interests: magnesium alloys; titanium alloys; phase transformations; advanced processing techniques; functional performances

Special Issue Information

Dear Colleagues,

The trend of increasing market share of advanced materials, particularly magnesium, titanium, titanium alloys, and aluminum alloys, which reduce reliance on traditional manufacturing technologies, is a significant driver for the development of new materials and technologies. This Special Issue focuses on the microstructural evolution and phase transformations of magnesium, titanium, and aluminum alloys during casting, forming, and heat treatment processes, which are critical for determining the final mechanical properties and functional performances of these materials. The control and characterization of material properties at each stage of processing are essential for the advancement of these alloys in various applications.

In this Special Issue, we invite articles that focus on the preparation methods of these alloys and their influence on the final products' performance, considering both the alloy stage and/or the compaction stadium. Of particular interest are fully controllable, fast, and low-cost processes with high implementation potential in advanced processing techniques, enabling the production of high-performance products.

Dr. Zhongxue Feng
Guest Editor

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Keywords

  • magnesium alloys
  • titanium alloys
  • aluminum alloys
  • microstructural evolution
  • phase transformations
  • casting processes
  • heat treatment
  • advanced processing techniques
  • mechanical properties
  • functional performances

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Published Papers (1 paper)

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Research

14 pages, 5677 KiB  
Article
Solidification Window in Al-Based Casting Alloys
by Simone Ferraro, Mauro Palumbo, Marcello Baricco and Alberto Castellero
Metals 2025, 15(5), 489; https://doi.org/10.3390/met15050489 (registering DOI) - 26 Apr 2025
Viewed by 155
Abstract
Semi-solid processes of aluminium alloys, characterised by the coexistence of solid and liquid phases, offer advantages in terms of mechanical properties and fatigue resistance, thanks to the more globular microstructure. Thermodynamic models can be used to analyse the solidification behaviour and to predict [...] Read more.
Semi-solid processes of aluminium alloys, characterised by the coexistence of solid and liquid phases, offer advantages in terms of mechanical properties and fatigue resistance, thanks to the more globular microstructure. Thermodynamic models can be used to analyse the solidification behaviour and to predict the solidification window, ΔT. The CALPHAD method enables the calculation of the phases formed during solidification and the optimisation of alloy composition to meet specific industrial requirements. This study aims to assess how thermodynamic properties in both liquid and solid phases affect the ΔT. Initially, the influence of thermodynamic properties of pure components and interaction parameters was analysed in simplified regular binary systems. To compare these findings with real industrial systems, Al-based alloys were examined. Using available databases, the ΔT was estimated via the CALPHAD method adding alloying elements commonly found in secondary Al-alloys. Finally, the same minority alloying elements were added to Al-Si 8 and 11 wt.% alloys, and the corresponding ΔT were calculated. Cr, Fe, Mg, Mn, and Ti increase the ΔT, while Cu, Ni, and Zn decrease it. The obtained results may serve as a valuable tool for interpreting phenomenological observations and understanding the role of minority elements in the semi-solid processing of secondary Al-Si casting alloys. Full article
(This article belongs to the Special Issue Solidification and Phase Transformation of Light Alloys)
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