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Crystals
Special Issues
Solidification/Crystallization Behavior of Alloys and Related Simulation Calculation
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Solidification/Crystallization Behavior of Alloys and Related Simulation Calculation

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 December 2023) | Viewed by 2058

Special Issue Editors

Dr. Erhu Yan

E-Mail Website
Guest Editor
School of Material Science & Engineering, Guilin University of Electronic Technology, Guilin 541004, China
Interests: directional solidification of alloys; solidification theory of multicomponent alloys; new energy materials
Dr. Ping Zhao

E-Mail Website
Guest Editor
Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
Interests: high strength and high toughness steel; superalloy materials; casting materials and processes; high strength aluminum alloy

Special Issue Information

Dear Colleagues,

In the past hundred years, the alloy solidification and crystallization process has changed from a type of ancient metallurgical technology into an important branch of modern science. The solidification of metals not only determines the structure and properties of metals and alloys, but also affects the subsequent plastic processing and heat treatment. In addition, alloy solidification simulation calculation can accurately predict the formation of crystals or defects, and then guide production practice. Therefore, the study of alloy solidification and simulation has guiding significance for the application and development of metal materials. To this end, we have organized this Special Issue entitled “Solidification/crystallization behavior of alloys and related simulation calculation”. This Special Issue covers a wide range of topics, including studies of the macrostructure, defects and macrosegregation of alloys and casting from a macroscopical view. At the same time, the microstructure (including grain size, orientation and shape), intragranular dendritic structure, non-metallic inclusions, microporosity and other submicroscopic defects will be covered. This Special Issue also explores the microsegregation of alloy elements, the formation of microcrystalline defects (dislocations, vacancies, etc.) and the atomic stacking process of grain nucleation and growth at the atomic scale. Simulation studies of the alloy solidification process and thermodynamic calculation of alloy phase diagrams will also be addressed in this Special Issue.

Dr. Erhu Yan
Dr. Ping 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

  • alloy solidification and crystallization
  • segregation and inclusion
  • simulation of alloy solidification process
  • thermodynamic calculation of alloy phase diagram

Published Papers (1 paper)

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Research

17 pages, 10816 KiB  
Article
Effect of Rare Earth Yttrium on Inclusion Characteristics of Grain-Oriented Silicon Steel
by Zhihong Guo, Xiangyang Li, Yu Liu, Yaxu Zheng, Liguang Zhu, Yuanxiang Zhang, Huilan Sun, Jie Feng and Ruifang Cao
Crystals 2023, 13(6), 896; https://doi.org/10.3390/cryst13060896 - 30 May 2023
Viewed by 909
Abstract
To investigate the influence of heavy rare earth element yttrium on the type, morphology, and quantity distribution of inclusions in grain-oriented silicon steel, thermodynamic calculation was carried out on the typical rare earth inclusions in grain-oriented silicon steel containing yttrium. The main inclusions [...] Read more.
To investigate the influence of heavy rare earth element yttrium on the type, morphology, and quantity distribution of inclusions in grain-oriented silicon steel, thermodynamic calculation was carried out on the typical rare earth inclusions in grain-oriented silicon steel containing yttrium. The main inclusions in the experimental steels with and without yttrium were observed and analyzed using field emission scanning electron microscope (FESEM, Zeiss Gemini SEM 300) and energy dispersive spectrometer (EDS, OXFORD Ultim Extreme). The electron backscatter diffraction (EBSD, OXFORD Symmetry) was used to analyze the local average misorientation of the hot-rolled plate. The results show that the inclusions in the Y-free steel are mainly long MnS, irregular Al2O3 and MnS-Al2O3. The inclusions in the Y-bearing steel are spherical rare earth compounds. The number of inclusions in Y-bearing steel decreases and the size increases compared with Y-free steel. The mean value of local average misorientation and the dislocation density of Y-bearing steel are smaller compared with Y-free steel, which could avoid the cracking problem caused by dislocation accumulation during hot rolling. After heating the rough-rolling sample to 1350 °C, there is no obvious difference in the inclusions type between the Y-free steel and Y-bearing steel. However, the area fraction of inclusions in Y bearing steel increases slightly. According to the thermodynamic calculation results, there are mainly three kinds of rare earth inclusions, YS, Y2S3 and Y2O2S, in Y-bearing steel, among which YS has the strongest stability and the stability of Y2O2S is the weakest. The rare earth element yttrium can effectively modify the inclusions, transforming the irregular Al2O3 inclusions, formed during the deoxidation of silicon steel into spherical rare earth inclusions, which suppress the precipitation of long MnS inclusions. Thus, the formability of the steel could be improved. Full article
(This article belongs to the Special Issue Solidification/Crystallization Behavior of Alloys and Related Simulation Calculation)
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