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Mechanical Properties and Structure Control of Superalloys
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Mechanical Properties and Structure Control of Superalloys

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Metals and Alloys".

Deadline for manuscript submissions: closed (20 September 2024) | Viewed by 1889

Special Issue Editors

Prof. Dr. Song Xiang

E-Mail Website
Guest Editor
Guizhou Key Laboratory of Materials Mechanical Behavior and Microstructure, College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China
Interests: superalloys; microstructure evolution; texture evolution; deformation behavior; mechanical properties; hot-working; cold-working; additive manufacturing
Dr. Yuanbiao Tan

E-Mail Website
Guest Editor
Guizhou Key Laboratory of Materials Mechanical Behavior and Microstructure, College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China
Interests: non-ferrous metals and alloys; microstructure evolution; texture evolution; deformation behavior; mechanical properties; hot-working; cold-working
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Superalloys are a group of nickel, iron–nickel and cobalt alloys, which exhibit excellent heat-resistant properties and high stiffness, strength, toughness and dimensional stability at high temperatures, as well good resistance to corrosion and oxidation at high temperatures. Recently, superalloys have become the most common candidates for application in the hot parts of gas turbines, where they are often used as a polycrystalline material for disks or as single crystals for turbine blades. Their microstructure, which is established by precisely controlled the casting, solidification, heat treatment procedures and processing methods, governs the mechanical performance at elevated temperatures. Currently, there are demands for high-performance superalloys via alloy design, microstructural control, emerging fabrication techniques, etc. Contributions related to microstructure design and microstructural control are collected in this Special Issue, together with their relation to the microstructure evolution and mechanical performance of superalloys. The goal of this Special Issue of Materials is to present contributions related to microstructure design and microstructural control as well he relationship between microstructure and mechanical performance of superalloys in different processing techniques processing techniques including casting, solidification, heat treatment procedures, hot-working, cold-working and additive manufacturing. Submissions to this Special Issue are welcome in the following areas:

  • New alloy design theory, new strengthening methods or mechanisms for the superalloys.
  • Microstructural control and related high-temperature properties of the superalloys.
  • Microstructures control and properties of additively manufactured, forged and cast superalloys.
  • Microstructural evolution and damage mechanisms of the superalloys.
  • Crystal growth and coatings of the superalloys.

It is my pleasure to invite you to submit a manuscript for publication in this Special Issue. Full papers, communications and reviews related to the mechanical properties and structure control of superalloys are welcome.

Prof. Dr. Song Xiang
Dr. Yuanbiao Tan
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. Materials is an international peer-reviewed open access semimonthly 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

  • superalloys
  • microstructure evolution
  • texture evolution
  • mechanical properties
  • hot-working
  • cold-working
  • additive manufacturing

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Published Papers (2 papers)

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Research

9 pages, 2772 KiB  
Article
The Effect of TiC–TiB2 Dual-Phase Nanoparticles on the Microstructure and Mechanical Properties of Cast Ni–Fe-Based Superalloys
by Guanlan Liu, Shengwei Sun, Yaoyun Hu and Qinglong Zhao
Materials 2024, 17(23), 5781; https://doi.org/10.3390/ma17235781 - 25 Nov 2024
Viewed by 694
Abstract
TiC–TiB2 dual-phase nanoparticles were added into a Ni–Fe-based cast superalloy and their effects on the microstructure and mechanical properties were compared to those of a Ni–Fe-based superalloy with the addition of TiC nanoparticles. The addition of TiC nanoparticles led to the precipitation [...] Read more.
TiC–TiB2 dual-phase nanoparticles were added into a Ni–Fe-based cast superalloy and their effects on the microstructure and mechanical properties were compared to those of a Ni–Fe-based superalloy with the addition of TiC nanoparticles. The addition of TiC nanoparticles led to the precipitation of a higher volume fraction of carbides. Compared to the addition of TiC, the addition of TiC–TiB2 nanoparticles not only led to the precipitation of carbides but also promoted the formation of flaky borides and a reduction in the precipitation of the Laves phase. The strengthening effect of TiC–TiB2 nanoparticles on the mechanical properties of Ni–Fe-based superalloys was stronger than that of TiC nanoparticles due to more secondary γ’ precipitates. This study provides valuable insights for selecting ceramic nanoparticles to increase the mechanical properties of cast Ni–Fe-based superalloys. Full article
(This article belongs to the Special Issue Mechanical Properties and Structure Control of Superalloys)
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20 pages, 17159 KiB  
Article
Numerical and Experimental Research of the Plastic Forming Process of Hastelloy X Alloy Sheets Using Elastomeric and Steel Tools
by Krzysztof Żaba, Maciej Balcerzak, Tomasz Trzepieciński, Łukasz Kuczek, Vit Nowak, Jarosław Mizera and Ryszard Sitek
Materials 2024, 17(22), 5473; https://doi.org/10.3390/ma17225473 - 9 Nov 2024
Viewed by 784
Abstract
The results of experimental and numerical studies of plastic forming of sheets made of the difficult-to-deform Hastelloy X, a nickel-based alloy with a thickness of 1 mm, using layered elastomeric punches and steel dies, are presented in this publication. The elastomeric punches were [...] Read more.
The results of experimental and numerical studies of plastic forming of sheets made of the difficult-to-deform Hastelloy X, a nickel-based alloy with a thickness of 1 mm, using layered elastomeric punches and steel dies, are presented in this publication. The elastomeric punches were characterized by hardness in the range of 50–90 Shore A, while the dies were made of 90MnCrV8 steel with a hardness of over 60 HRC. The principle of operating the stamping die was based on the Guerin method. The finite-element-based numerical modeling of the forming process for various configurations of polyurethane inserts was also carried out. The results obtained from numerical modeling were confirmed by the results of experimental tests. The drawpieces obtained through sheet forming were subjected to geometry tests using optical 3D scanning. The results confirmed that in the case of forming difficult-to-deform Hastelloy X, Ni-based alloy sheets, the hardness of the polyurethane inserts significantly affected the geometric quality of the obtained drawpieces. Significant nonuniform sheet metal deformations were also found, which may pose a problem in the process of designing forming tools and the technology of the plastic forming of Hastelloy X, Ni-based alloy sheets. Full article
(This article belongs to the Special Issue Mechanical Properties and Structure Control of Superalloys)
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