Special Issue "Grain Refinement and Mechanical Properties of Cast 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: 30 September 2023 | Viewed by 639

Special Issue Editor

Casting Research, Montan Universitat Leoben, A-8700 Leoben, Austria
Interests: cast and solidification; mechanical properties; magnesium alloys; precipitation hardening; grain refinement; aluminum alloy; electron microscopy
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Cast alloys are the most important engineering materials, mainly cast Al alloy, cast Mg alloy, cast Ti alloy, cast iron, cast steel, cast superalloy (Ni-based or Co-based), cast Cu alloy, and cast Zn alloy. Among these cast alloys, grain refinement plays an important effect in the solidification microstructure control and mechanical properties improvement. Especially, for the recycling cast alloys, grain refinement becomes more important to control solidification microstructure and improve mechanical properties. Grain refinement can be achieved via enhancing heterogeneous nucleation and increasing grain growth restriction. In addition, an external physical field (electromagnetic stirring, ultrasonic treatment) can be also used to achieve grain refinement. The benefits of grain refinement for cast alloy include reducing segregation (either microsegregation or macrosegregation), improving castability (increasing fluidity, decreasing hot tearing tendency), and mechanical properties (not only static tensile properties but also dynamic fatigue properties). Achieving grain refinement for cast alloys is therefore of great necessity to ensure the high performance of many different cast alloys.

In this Special Issue, all aspects of grain refinement and mechanical properties of cast alloys are welcome. Especially, recycling cast alloys is a special focus.

Dr. Jiehua Li
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 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 2000 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

  • cast alloys
  • grain refinement
  • mechanical properties
  • recycling
  • castability
  • fatigue properties
  • heterogeneous nucleation
  • grain growth

Published Papers (1 paper)

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Research

Article
Two-Phase Flow Coordination Characteristics of H62 Brass Alloy Prepared by Up-Drawing Continuous Casting
Metals 2023, 13(3), 599; https://doi.org/10.3390/met13030599 - 15 Mar 2023
Viewed by 355
Abstract
In this study, the two-phase flow coordination characteristics between α and β phases of H62 brass made by up-drawing continuous casting are investigated based on the upsetting process. An in situ and new research method for two-phase flow is put forward, and the [...] Read more.
In this study, the two-phase flow coordination characteristics between α and β phases of H62 brass made by up-drawing continuous casting are investigated based on the upsetting process. An in situ and new research method for two-phase flow is put forward, and the two-phase flow and grain refinement characteristics are observed under different deformation conditions. The results show that α phase flows fast under 400 °C, β phase is pulled and overridden by α phase under this temperature. When the temperature increases to 500 °C, which is higher than β phase transition temperature, the flow velocity of β phase increases, and the deformation of β phase is found to bulge. The flow of β phase is more sensitive to low deformation rates than α phase. The deformation amount has a more significant impact on β phase than α phase, and the deformation of β phase promotes the grain fragmentation and refinement of α phase accompanied by huge β phase bulging obviously. Under the conditions of high temperature, low deformation rate, and large deformation amount, both phase α and β of up-drawing continuous casting brass alloy are broken and the grains are refined. Based on the two-phase flow characteristic, numerical simulation is used to obtain the optimal continuous extrusion parameters of the H-shaped wire of up-drawing continuous casting H62 brass. Then, the optimized complex cross-section wire is prepared by continuous extrusion experiment. This research aims to provide guidance for the complex processing of two-phase alloys. Full article
(This article belongs to the Special Issue Grain Refinement and Mechanical Properties of Cast Alloys)
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