Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
5.8
3.1
Journals
Materials
Special Issues
Mechanical Properties and Strengthening Mechanism of New Superalloys
materials-logo
Submit to Special Issue Submit Abstract to Special Issue Review for Materials Propose a Special Issue

Journal Menu

► Journal Menu

Journal Browser

► Journal Browser
share announcement

Mechanical Properties and Strengthening Mechanism of New Superalloys

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

Deadline for manuscript submissions: 20 October 2025 | Viewed by 1767

Special Issue Editors

Dr. Rui Zhang

E-Mail Website
Guest Editor
Shi-Changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
Interests: design of high temperature and high strength superalloys; advanced preparation method of hard-to-deform superalloys; engineering application of new superalloys
Special Issues, Collections and Topics in MDPI journals
Dr. Weihong Zhang

E-Mail Website
Guest Editor
Shi-Changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
Interests: superalloy preparation and forming; strengthening mechanism; engineering application
Dr. Yubi Gao

E-Mail Website
Guest Editor
School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China
Interests: microstructure and properties of superalloy

Special Issue Information

Dear Colleagues,

The Special Issue on “Mechanical Properties and Strengthening Mechanism of New Superalloys” is mainly concerned with the study of the mechanism of strength and toughness of new superalloys. The new superalloys refer to the realization of solid solution strengthening, precipitation strengthening, dislocation strengthening, micro-twins strengthening, and other excellent strengthening effects through precision smelting, forging, and heat treatment processes, so that the material can still maintain stable mechanical properties under high temperature and high pressure. At the same time, it also has excellent high-temperature oxidation resistance and thermal corrosion resistance, as well as good fatigue performance, fracture toughness, and other comprehensive properties of materials to meet the increasingly demanding requirements of energy and power systems, such as turbine disks, blades, combustion chambers, etc. In the aerospace field, they are also used to manufacture spacecraft thermal protection systems, propulsion systems, and other components to ensure stable operation. In addition, high-performance superalloys are widely used in other important fields such as gas turbines, the energy chemical industry, the nuclear industry, and so on.

Therefore, the Special Issue welcomes the contributions of all researchers working on novel high-temperature materials.

The Special Issue will cover, but is not limited to, the following topics:

  • Design, preparation, and application of high-temperature and high-strength alloys used above 700 ℃;
  • Deformation and heat treatment of new superalloys and their strengthening mechanisms;
  • Reasonable matching and comprehensive control of strength and toughness of new superalloys;
  • Mechanism of resistance to high-temperature oxidation and corrosion;
  • Failure mechanism analysis of new superalloys;
  • Characterization, evaluation, prediction, and evolution mechanism of mechanical properties of superalloy materials;
  • The causes of defects in high-temperature and high-strength alloys and their influence on properties;
  • Cold and hot working behaviors of superalloys and their influence on alloy stability;
  • Advanced test methods for high-temperature mechanical properties;
  • High temperature oxidation and thermal corrosion-resistant coating and action mechanism;
  • Preparation and engineering application of new superalloy

It is our pleasure to invite you to submit a manuscript for this Special Issue. Full papers, communications, and reviews are welcome.

Dr. Rui Zhang
Dr. Weihong Zhang
Dr. Yubi Gao
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

  • Ni-based wrought superalloy
  • twin boundary
  • twinning strengthening
  • stacking fault
  • microstructure
  • mechanical property

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • Reprint: MDPI Books provides the opportunity to republish successful Special Issues in book format, both online and in print.

Further information on MDPI's Special Issue policies can be found here.

Published Papers (3 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

17 pages, 25502 KiB  
Article
In Situ EBSD Study of Deformation Behavior at Grain Scale of Inconel 718 Alloy During Tensile Test at 650 °C
by Lijun Sang, Junxia Lu, Xiaopeng Cheng, Yuefei Zhang and Ze Zhang
Materials 2025, 18(9), 1934; https://doi.org/10.3390/ma18091934 - 24 Apr 2025
Viewed by 279
Abstract
In order to clarify the deformation mechanism of Inconel 718 (IN718) alloy at the grain scale during tensile deformation, the deformation behaviors of IN718 alloy were investigated at 650 °C using an in situ electron backscatter diffraction (EBSD) tensile testing method. The evolution [...] Read more.
In order to clarify the deformation mechanism of Inconel 718 (IN718) alloy at the grain scale during tensile deformation, the deformation behaviors of IN718 alloy were investigated at 650 °C using an in situ electron backscatter diffraction (EBSD) tensile testing method. The evolution of grain morphology, crystallographic orientation, activated slip systems, grain boundaries evolution, and strain-induced misorientation were systematically analyzed during the tensile test. The results showed that the grains were elongated along the tensile direction, and the grain boundaries also became significantly curved. Meanwhile, the EBSD studies illustrated that the changes in local misorientation within individual grains were non-uniform and generally began at the grain boundaries. The low-angle grain boundaries (LAGBs) were first formed near the high-angle grain boundaries (HAGBs) and gradually expanded into the interior of the grains. The activation of the slip system and the Schmid factor were characterized and calculated based on the slip traces on the deformed grain surface. The evolution of local strain within the grains was evidenced by a kernel average misorientation (KAM) map. Finally, the plastic deformation mechanism at the grain scale was discussed in detail based on our experimental results. Full article
(This article belongs to the Special Issue Mechanical Properties and Strengthening Mechanism of New Superalloys)
►▼ Show Figures

Graphical abstract

14 pages, 7169 KiB  
Article
Improvement of Microstructure and Mechanical Properties of a Hot-Extruded Cu-Al2O3 Alloy After Thermomechanical Treatment
by Xu Wang, Xiaoqian Pan, Pengpeng Liu, Zhu Xiao, Tao Zhou, Chunlei Gan and Juan Wang
Materials 2025, 18(7), 1606; https://doi.org/10.3390/ma18071606 - 2 Apr 2025
Viewed by 321
Abstract
This article presented an investigation into the microstructure evolution of a hot-extruded Cu-0.23Al2O3 alloy during thermomechanical treatment. The results demonstrated that cold rolling deformation introduced high-density dislocations into the matrix, resulting in a significant enhancement in the strength of the [...] Read more.
This article presented an investigation into the microstructure evolution of a hot-extruded Cu-0.23Al2O3 alloy during thermomechanical treatment. The results demonstrated that cold rolling deformation introduced high-density dislocations into the matrix, resulting in a significant enhancement in the strength of the Cu-0.23Al2O3 alloy. Subsequent annealing at 500 for 1 h led to a reduction in dislocation density in the sample. Consequently, the strength of the sample decreased very slightly, while the elongation increased from 14% to 39%. There was little growth of the nano-scale Al2O3 particles due to their excellent thermal stability, with the average size remaining approximately 10 nm after annealing. The comprehensive properties of the Cu-0.23Al2O3 alloy were improved synchronously by thermomechanical treatment, with a tensile strength of 301 MPa and an electrical conductivity of 98.5%IACS. The calculation results of the strengthening mechanism indicated that refinement strengthening, work hardening and Orowan strengthening mainly contributed to the high strength of the Cu-0.23Al2O3 alloy. Full article
(This article belongs to the Special Issue Mechanical Properties and Strengthening Mechanism of New Superalloys)
►▼ Show Figures

Figure 1

Review

Jump to: Research

25 pages, 18497 KiB  
Review
Research Trends in Isothermal Near-Net-Shape Forming Process of High-Performance Titanium Alloys
by Shuangjie Chu, Weiwei Huang, Gaofei Liang, Qingtong Meng, Xiangyu Zhou and Bo Mao
Materials 2025, 18(3), 578; https://doi.org/10.3390/ma18030578 - 27 Jan 2025
Viewed by 848
Abstract
Titanium alloys find extensive applications in aviation, maritime, and chemical engineering applications. Nonetheless, these alloys encounter significant challenges during the conventional forging process, which include high deformation resistance, limited processing temperature ranges, and inhomogeneous microstructure. Isothermal forging, as a near-net-shape forming technique, can [...] Read more.
Titanium alloys find extensive applications in aviation, maritime, and chemical engineering applications. Nonetheless, these alloys encounter significant challenges during the conventional forging process, which include high deformation resistance, limited processing temperature ranges, and inhomogeneous microstructure. Isothermal forging, as a near-net-shape forming technique, can alleviate the microstructural inhomogeneity caused by deformation dead zones in conventional forging, thus enabling the direct production of complex shapes. This process enhances the overall performance and utilization of materials while reducing manufacturing costs. This paper comprehensively reviews how isothermal near-net-shape forging process parameters influence the intricate microstructure and essential properties of titanium alloys. The unique properties of isothermal forging applied to high-performance titanium alloys are also discussed in depth, and the intricate interplay between process parameters and the microstructure and properties of recoloration is clarified. That is to say, temperature is a vital element influencing the phases and microstructure of titanium alloys during the forming process. Grain size, microstructural homogeneity, and phase transformation are influenced by the strain rate, thereby affecting the plasticity, fracture toughness, and strength of titanium alloys. The extent of deformation significantly governs the grain size, the thickness of secondary α phase, dynamic recrystallization, and primary α phase. Cooling rate affects the grain size and precipitates, contributing to grain refinement. The frequency of isothermal forging affects the grain refinement and microstructural uniformity of titanium alloys. Finally, this paper summarizes the scientific questions that remain unresolved in this field and outlines future research directions to promote the further development of isothermal near-net-shape forging processes and facilitate the broader industrial applications of high-performance titanium alloys and other difficult-to-form alloys. Full article
(This article belongs to the Special Issue Mechanical Properties and Strengthening Mechanism of New Superalloys)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-3
Back to TopTop