Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
3.6
2.7
Journals
Crystals
Special Issues
Semi-solid Processing: Fundamentals and Applications
share announcement

Semi-solid Processing: Fundamentals and Applications

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Crystalline Metals and Alloys".

Deadline for manuscript submissions: closed (31 July 2022) | Viewed by 6424

Special Issue Editors

Prof. Dr. Shouxun Ji

E-Mail Website
Guest Editor
Brunel Centre for Advanced Solidification Technology (BCAST), Brunel University London, Uxbridge, Middlesex UB8 3PH, UK
Interests: solidification of metallic alloys; aluminum alloys; magnesium alloys; phase transformation; microstructure and mechanical properties; dissimilar metals and alloys: microstructure and mechanical properties; laser welding
Special Issues, Collections and Topics in MDPI journals
Dr. Uthayakumar Marimuthu

E-Mail Website
Guest Editor
Faculty of Mechanical Engineering, Kalasalingam Academy of Research and Education, Krishnankoil 626126, Tamil Nadu, India
Interests: erosion; corrosion; composites
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Yuhong Zhao

E-Mail Website
Guest Editor
School of Materials Science and Engineering, North University of China, Taiyuan 030051, China
Interests: semisolid processing; solid–liquid/solid–solid phase transformation; Al/Mg alloy hydrogen storage
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Semi-solid metal (SSM) processing is an attractive method for manufacturing near-net-shape components with high integrity due to its distinct advantages over conventional forming technologies. After near fifty years of development, SSM processing has been successfully established as a unique technique for manufacturing high-integrity products with improved mechanical properties. Different from the conventional metal-forming technologies that use either solid state materials (forging) or liquid metals (casting) as starting materials, SSM processing employs a mixture of solid phase and liquid–metal slurries and/or non-dendritic feedstocks as starting materials, in which the globular solid particles of the primary phase are dispersed into a liquid matrix. SSM slurries exhibit distinctive rheological characteristics, including pseudoplastic (or shear thinning) and thixotropic performance. Since its original development in the 1970s, a number of SSM processes have been developed for shaping components using its unique rheological property. Significant progress has also been achieved in the fundamental scientific understanding of the formation of unique microstructures, the flow behaviours of SSM slurries, mechanical properties and shaping mechanisms.

This Special Issue mainly focuses on the updated understanding and development of alloys for SSM processes, techniques for generating non-dendritic microstructures and the associated mechanisms in the microstructural evolution of non-dendritic primary phase, the pseudo-plasticity and thixotropy of semi-solid slurry and non-dendritic feedstock, microstructural evolution during shaping, the die filling and deformation mechanisms of semi-solid slurry and non-dendritic feedstock, the mechanical properties of finished components and the mechanism of defect formation, which are all critical aspects for the success of SSM processing.

Prof. Dr. Shouxun Ji
Dr. Uthayakumar Marimuthu
Prof. Dr. Yuhong Zhao
Guest Editors

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. Crystals 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

  • semi-solid metal processing
  • alloys
  • microstructural evolution
  • mechanical properties
  • heat treatment
  • pseudo-plasticity
  • thixotropy
  • rheo-casting
  • rheo-forming
  • thixocasting
  • thixoforming
  • thixomoulding

Published Papers (2 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

Jump to: Review

14 pages, 10066 KiB  
Article
The Influence of Shock Wave Surface Treatment on Vibration Behavior of Semi-Solid State Cast Aluminum—Al2SiO5 Composite
by Paul Sureshkumar Samuel Ratna Kumar, Peter Madindwa Mashinini, Mahaboob Adam Khan, Marimuthu Uthayakumar, Ainagul Rymkulovna Toleuova, Dariusz Mierzwiński, Kinga Korniejenko and Mohd Shukry Abdul Majid
Crystals 2022, 12(11), 1587; https://doi.org/10.3390/cryst12111587 - 08 Nov 2022
Cited by 1 | Viewed by 1288
Abstract
The semi-solid state casting procedure was used to manufacture as-cast AA5083, 1 and 2 wt.% of aluminosilicate reinforced composite material. After solidification, developed as-cast materials were subjected to shock wave treatment in the subsonic wind tunnel. Various techniques were used to evaluate the [...] Read more.
The semi-solid state casting procedure was used to manufacture as-cast AA5083, 1 and 2 wt.% of aluminosilicate reinforced composite material. After solidification, developed as-cast materials were subjected to shock wave treatment in the subsonic wind tunnel. Various techniques were used to evaluate the change in shock wave exposure, including mechanical and structural analysis, which is a field dedicated to the study of vibrations and other material properties. The research methods involved developed material grain structure and surface morphology, such as field emission scanning electron microscope, X-ray diffraction, and the energy dispersive method. This study shows that the microhardness value of the matrix material is increased before and after exposure to shock wave treatment compared to the developed composite material. The natural frequency of the developed composite increases as a result of the addition of aluminosilicate reinforcement before and after the shock wave. In addition, the shifting of frequency mechanism is studied to know the influence of shock wave surface treatment. The results obtained show the potential of the application of this material in the area of robotic parts. Full article
(This article belongs to the Special Issue Semi-solid Processing: Fundamentals and Applications)
►▼ Show Figures

Figure 1

Review

Jump to: Research

34 pages, 6650 KiB  
Review
An Overview on the Process Development and the Formation of Non-Dendritic Microstructure in Semi-Solid Processing of Metallic Materials
by Shouxun Ji, Kai Wang and Xixi Dong
Crystals 2022, 12(8), 1044; https://doi.org/10.3390/cryst12081044 - 27 Jul 2022
Cited by 8 | Viewed by 4236
Abstract
Semi-solid metal (SSM) processing has been an attractive method for manufacturing near-net-shape components with high integrity due to its distinct advantages over conventional forming technologies. SSM processing employs a mixture of solid phase and liquid metal slurries and/or non-dendritic feedstocks as starting materials [...] Read more.
Semi-solid metal (SSM) processing has been an attractive method for manufacturing near-net-shape components with high integrity due to its distinct advantages over conventional forming technologies. SSM processing employs a mixture of solid phase and liquid metal slurries and/or non-dendritic feedstocks as starting materials for shaping. Since the original development from 1970s, a number of SSM processes have been developed for shaping components using the unique rheological and/or thixotropic properties of metal alloys in the semi-solid state, in which the globular solid particles of primary phase are dispersed into a liquid matrix. In this paper, the progress of the development of shaping technologies and the formation of non-dendritic microstructure in association with the scientific understanding of microstructural evolution of non-dendritic phase are reviewed, in which the emphasis includes the new development in rheomoulding, rheo-mixing, rheo/thixo-extrusion and semi-solid twin roll casting, on the top of traditional rheocasting, thixoforming and thixomoulding. The advanced microstructural control technologies and processing methods for different alloys are also compared. The mechanisms to form non-dendritic microstructures are summarised from the traditional understanding of mechanical shear/bending and dendrite multiplication to the spheroidal growth of primary phase under intensively forced convection. In particular, the formation of spheroidal multiple phases in eutectic alloys is summarised and discussed. The concluding remarks focus on the current challenges and developing trends of semi-solid processing. Full article
(This article belongs to the Special Issue Semi-solid Processing: Fundamentals and Applications)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-2
Back to TopTop