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Advances in Superalloys: Microstructure, Manufacturing, and Performance

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

Deadline for manuscript submissions: 20 July 2024 | Viewed by 412

Special Issue Editor


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Guest Editor
School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
Interests: superalloys; mechanical property; microstructure characterization; in-situ TEM; alloy design

Special Issue Information

Dear Colleagues,

Superalloys, mainly based on iron, nickel and cobalt, can serve at temperature above 600 °C under certain stress for extremely long time, therefore have been widely used in aerospace and energy industry. The application of superalloys is closely related to alloy performance, such as high temperature strength, fatigue property, oxidation and thermal corrosion resistance, making the research of superalloys not only scientifically important but also technologically promising for expanding new applications. Specially, with the new century advances in alloy design, manufacturing and microstructural characterization, the alloy behavior can be explored from macro- to atomic-scale.

The forthcoming Special Issue “Research on Superalloys: Microstructure, Manufacturing, and Performance” in Materials will be an open forum for recent research and development in superalloys. Bringing the latest results and advances for these materials will have synergic effects on future developments in this field. Topics of interest include but are not limited to new alloy design, simulations and modeling, manufacturing, microstructural characterization, performance, as well as novel application, etc.

It is our pleasure to invite your contributions to this Special Issue. Submissions of full-length articles, short communications, recent advances, and reviews are all welcome.

Dr. Qingqing Ding
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. 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
  • alloy design
  • microstructure characterization
  • mechanical property
  • alloy fabrication

Published Papers (1 paper)

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Research

12 pages, 4550 KiB  
Article
Effect of Initial Position and Crystallographic Orientation on Grain Selection Procedure in Z-Form Selector for Ni-Based Single-Crystal Superalloy
by Yuanyuan Guo, Jun Bao, Xuanning Zhang, Mai Zhang, Xiqiong Yang and Jian Zhang
Materials 2024, 17(8), 1885; https://doi.org/10.3390/ma17081885 - 19 Apr 2024
Viewed by 293
Abstract
The grain selection process in a Z-form selector for Ni-based single-crystal superalloy was simulated using a macro-scale ProCAST software (2013 version) coupled CAFE module combined with an experiment to investigate the grain selection procedure and mechanism with different grain positions and crystal orientation [...] Read more.
The grain selection process in a Z-form selector for Ni-based single-crystal superalloy was simulated using a macro-scale ProCAST software (2013 version) coupled CAFE module combined with an experiment to investigate the grain selection procedure and mechanism with different grain positions and crystal orientation relationships. A non-stationary solidification process was found in the Z-form selector, and the liquid–solid (L–S) interface was tilted in the same direction as the selector channel during directional solidification. Given that the grain boundary was parallel to the Z-form selector, the overgrowth rate of the bi-crystal in the selector channel was very low. The initial position of the bi-crystal in the selector channel has a greater effect on the overgrowth rate than the effects of primary and secondary orientations. The grain selection was a result of the coupling of the competitive grain growth effect and geometrical restriction effect. Finally, the selection grain mechanism within the Z-form selector was discussed, coalescing the temperature field and the grain competition growth mechanism. Full article
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