Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
4.4
2.9
Journals
Metals
Special Issues
Casting and Rolling of Alloys
share announcement

Casting and Rolling of 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: closed (28 February 2022) | Viewed by 14741

Special Issue Editor

Dr. Olexandr Grydin

E-Mail Website
Guest Editor
Department of Materials Science, Paderborn University, Warburger Str. 100, 33098 Paderborn, Germany
Interests: twin-roll casting of aluminum alloys and clad strips; thermo-mechanical materials processing; treatment of metallic components for consolidation in hybrid materials; microstructural design of alloys
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Casting and rolling are the key processes for the mass production of semifinished metallic products such as sheets, profiles, wire, seamless tubes, as well as pipes. Along with the chemical composition, they dictate the microstructure and the properties of materials. Process factors such as the type of melt treatment, pouring temperature, solidification rate, casting speed, rolling temperature and reduction, as well as an optional integrated thermomechanical treatment influence the grain size and morphology, the crystallographic texture, and the phase composition of alloys. This enables a wide variation of mechanical and technological properties of a material.

For the Special Issue reviews, short communications and full-length research papers focused on following topics are welcome:

  • Manufacturing of innovative high-strength materials by casting and rolling;
  • Effects of melt treatment on the microstructural and mechanical performance of cast and rolled products;
  • Processes of direct casting, i.e., direct strip casting such as belt-casting and twin-roll casting;
  • Microstructural design of materials processed by rolling with an optional integrated thermomechanical treatment;
  • Numerical simulation of casting and rolling processes;
  • Quality and defects formation in cast and rolled products.

Common metallic materials such as steel, aluminium, magnesium, titanium, copper alloys, or combinations thereof (cast and rolled clads or composites) are considered. Special attention should be paid to the relationships between the process conditions, the microstructural features, and the mechanical properties.

Dr. Olexandr Grydin
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 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

  • Casting
  • Rolling
  • Melt treatment
  • Thermo-mechanical treatment
  • Microstructure
  • Mechanical properties
  • Defects
  • Numerical simulation

Published Papers (6 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

13 pages, 5184 KiB  
Article
Hot Rolling of the Twin-Roll Cast and Homogenized Mg-6.8Y-2.5Zn (WZ73) Magnesium Alloy Containing LPSO Structures
by Madlen Ullmann, Kristina Kittner and Ulrich Prahl
Metals 2021, 11(11), 1771; https://doi.org/10.3390/met11111771 - 03 Nov 2021
Cited by 1 | Viewed by 1666
Abstract
In this study, hot rolling trials were conducted on a twin-roll cast and homogenized magnesium alloy Mg-6.8Y-2.5Zn (WZ73). The WZ73 contains long period stacking ordered (LPSO) structures due to the ratio of Y and Zn content. Microstructural and texture evolution depending on the [...] Read more.
In this study, hot rolling trials were conducted on a twin-roll cast and homogenized magnesium alloy Mg-6.8Y-2.5Zn (WZ73). The WZ73 contains long period stacking ordered (LPSO) structures due to the ratio of Y and Zn content. Microstructural and texture evolution depending on the different strain and strain rates were investigated, and the resulting mechanical properties were also considered. Therefore, samples were quenched in water directly after hot rolling. The results revealed that the rolling parameters significantly influence dynamic recrystallization (DRX), while continuous and twin-induced dynamic recrystallization are assumed to be the main DRX mechanisms. It was also found that high strains and strain rates are required to proceed the DRX. The resulting textures revealed that the non-basal slip of <a>-dislocations and <c+a>-dislocations is activated during hot rolling. Hot rolling results in increased strength and ductility compared to the initial twin-roll cast and homogenized state. Full article
(This article belongs to the Special Issue Casting and Rolling of Alloys)
►▼ Show Figures

Figure 1

12 pages, 49980 KiB  
Article
Twin Roll Casting and Secondary Cooling of 6.0 wt.% Silicon Steel
by Max Müller, Dorothea Czempas, David Bailly and Gerhard Hirt
Metals 2021, 11(10), 1508; https://doi.org/10.3390/met11101508 - 23 Sep 2021
Cited by 1 | Viewed by 1808
Abstract
Iron–silicon alloys with up to 6.5 wt.% Si offer an improvement of soft magnetic properties in electrical steels compared to conventional electrical steel grades. However, steels with high Si contents are very brittle and cannot be produced by cold rolling. In addition to [...] Read more.
Iron–silicon alloys with up to 6.5 wt.% Si offer an improvement of soft magnetic properties in electrical steels compared to conventional electrical steel grades. However, steels with high Si contents are very brittle and cannot be produced by cold rolling. In addition to solid solution hardening, it is assumed that the B2- and DO3-superlattice structures are responsible for the poor cold workability. In this work, two cast strips with 6.0 wt.% Si were successfully produced by the twin roll strip casting process and cooled differently by secondary cooling. The aim of the different cooling strategies was to suppress the formation of the embrittling superlattice structures and thus enable further processing by cold rolling. A comprehensive material characterization allows for the understanding of the influence of casting parameters and cooling strategies on segregation, microstructure and superlattice structure. The results show that both cooling strategies are not sufficient to prevent the formation of B2- and DO3-structures. Although the dark field images show a condition which is far from equilibrium, the achieved condition is not sufficient to ensure cold processing of the material. Full article
(This article belongs to the Special Issue Casting and Rolling of Alloys)
►▼ Show Figures

Figure 1

13 pages, 4233 KiB  
Article
Effect of Solidification Rates at Sand Casting on the Mechanical Joinability of a Cast Aluminium Alloy
by Moritz Neuser, Olexandr Grydin, Anatolii Andreiev and Mirko Schaper
Metals 2021, 11(8), 1304; https://doi.org/10.3390/met11081304 - 17 Aug 2021
Cited by 10 | Viewed by 3060
Abstract
Implementing the concept of mixed construction in modern automotive engineering requires the joining of sheet metal or extruded profiles with cast components made from different materials. As weight reduction is desired, these cast components are usually made from high-strength aluminium alloys of the [...] Read more.
Implementing the concept of mixed construction in modern automotive engineering requires the joining of sheet metal or extruded profiles with cast components made from different materials. As weight reduction is desired, these cast components are usually made from high-strength aluminium alloys of the Al-Si (Mn, Mg) system, which have limited weldability. The mechanical joinability of the cast components depends on their ductility, which is influenced by the microstructure. High-strength cast aluminium alloys have relatively low ductility, which leads to cracking of the joints. This limits the range of applications for cast aluminium alloys. In this study, an aluminium alloy of the Al-Si system AlSi9 is used to investigate relationships between solidification conditions during the sand casting process, microstructure, mechanical properties, and joinability. The demonstrator is a stepped plate with a minimum thickness of 2.0 mm and a maximum thickness of 4.0 mm, whereas the thickness difference between neighbour steps amounts to 0.5 mm. During casting trials, the solidification rates for different plate steps were measured. The microscopic investigations reveal a correlation between solidification rates and microstructure parameters such as secondary dendrite arm spacing. Furthermore, mechanical properties and the mechanical joinability are investigated. Full article
(This article belongs to the Special Issue Casting and Rolling of Alloys)
►▼ Show Figures

Figure 1

15 pages, 2375 KiB  
Article
Roll Bonding of Al-Based Composite Reinforced with C10 Steel Expanded Mesh Inlay
by Yaroslav Frolov, Maxim Nosko, Andrii Samsonenko, Oleksandr Bobukh and Oleg Remez
Metals 2021, 11(7), 1044; https://doi.org/10.3390/met11071044 - 29 Jun 2021
Cited by 3 | Viewed by 2273
Abstract
The most complex issue related to the design of high efficiency composite materials is the behavior of the reinforcing component during the bonding process. This study presents numerical and experimental investigations of the shape change in the reinforcing inlay in an aluminum-steel mesh-aluminum [...] Read more.
The most complex issue related to the design of high efficiency composite materials is the behavior of the reinforcing component during the bonding process. This study presents numerical and experimental investigations of the shape change in the reinforcing inlay in an aluminum-steel mesh-aluminum composite during roll-bonding. A flat composite material consisting of two outer strips of an EN AW 1050 alloy and an inlay of expanded C10 steel mesh was obtained via hot roll bonding with nominal rolling reductions of 20%, 30%, 40% and 50% at a temperature of 500 °C. The experimental procedure was carried out using two separate rolling mills with diameters equal to 135 and 200 mm, respectively. A computer simulation of the roll bonding was performed using the finite element software QForm 9.0.10 by Micas Simulations Limited, Oxford, UK. The distortion of the mesh evaluated via the change in angle between its strands was described using computer tomography scanning. The dependence of the absorbed impact energy of the roll bonded composite on the parameters of the deformation zone was found. The results of the numerical simulation of the steel mesh shape change during roll bonding concur with the data from micro-CT scans of the composites. The diameter of rolls applied during the roll bonding, along with rolling reduction and temperature, have an influence on the resulting mechanical properties, i.e., the absorbed bending energy. Generally, the composites with reinforcement exhibit up to 20% higher impact energy in comparison with the non-reinforced composites. Full article
(This article belongs to the Special Issue Casting and Rolling of Alloys)
►▼ Show Figures

Figure 1

10 pages, 3773 KiB  
Article
Cold Roll Bonding of Tin-Coated Steel Sheets with Subsequent Heat Treatment
by Illia Hordych, Khemais Barienti, Sebastian Herbst, Hans Jürgen Maier and Florian Nürnberger
Metals 2021, 11(6), 917; https://doi.org/10.3390/met11060917 - 04 Jun 2021
Cited by 5 | Viewed by 2147
Abstract
One possibility to increase the interface strength of cold roll bonded materials is the application of a thin intermediate layer. In the present study, a tin coating was employed to strengthen the interface formed between cold roll bonded steel sheets, and the impact [...] Read more.
One possibility to increase the interface strength of cold roll bonded materials is the application of a thin intermediate layer. In the present study, a tin coating was employed to strengthen the interface formed between cold roll bonded steel sheets, and the impact of subsequent heat treatment on the resulting bonding strength was investigated. To increase the bond strength by diffusion, the tin-coated steel bonds underwent heat post-treatment between temperatures of 150 °C and 300 °C for different dwell times. The results demonstrate that the use of tin as an active intermediate layer increases the bond area established. Moreover, the thin tin coating results in the formation of an active intermediate layer that directly takes part in the joining process by establishing a reactive link between the two substrates. A subsequent heat treatment further affects the bond strength by diffusion of tin at the interface. Full article
(This article belongs to the Special Issue Casting and Rolling of Alloys)
►▼ Show Figures

Figure 1

16 pages, 48563 KiB  
Article
Hot Deformation Behavior and Hot Rolling Properties of a Nano-Y2O3 Addition Near-α Titanium Alloy
by Zhuangzhuang Zheng, Yuyong Chen, Fantao Kong, Xiaopeng Wang and Yucheng Yu
Metals 2021, 11(5), 837; https://doi.org/10.3390/met11050837 - 19 May 2021
Cited by 4 | Viewed by 1879
Abstract
The hot deformation behavior and hot rolling based on the hot processing map of a nano-Y2O3 addition near-α titanium alloy were investigated. The isothermal compression tests were conducted at various deformation temperatures (950–1070 °C) and strain rates (0.001–1 s−1 [...] Read more.
The hot deformation behavior and hot rolling based on the hot processing map of a nano-Y2O3 addition near-α titanium alloy were investigated. The isothermal compression tests were conducted at various deformation temperatures (950–1070 °C) and strain rates (0.001–1 s−1), up to a true strain of 1.2. The flow stress was strongly dependent on deformation temperature and strain rate, decreasing with increased temperature and decreased strain rate. The average activation energy was 657.8 kJ/mol and 405.9 kJ/mol in (α + β) and β region, respectively. The high activation energy and peak stress were contributed to the Y2O3 particles and refractory elements comparing with other alloys and composites. The deformation mechanisms in the (α + β) region were dynamic recovery and spheroidization of α phase, while the β phase field was mainly controlled by the dynamic recrystallization and dynamic recovery of β grains. Moreover, the constitutive equation based on Norton–Hoff equation and hot processing map were also obtained. Through the optimal processing window determined by the hot processing map at true strains of 0.2, 0.4 and 0.6, the alloy sheet with multi-pass hot rolling (1050 °C/0.03–1 s−1) was received directly from the as-cast alloy. The ultimate tensile strength and yield strength of the alloy sheet were 1168 MPa and 1091 MPa at room temperature, and 642 MPa and 535 MPa at 650 °C, respectively, which performs some advantages in current research. Full article
(This article belongs to the Special Issue Casting and Rolling of Alloys)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-6
Back to TopTop