Advances of Shape Memory Alloys

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Crystalline Metals and Alloys".

Deadline for manuscript submissions: closed (20 May 2024) | Viewed by 680

Special Issue Editors


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Guest Editor
Department of Materials Science and Engineering, Delft University of Technology, Mekelweg 2, CD 2628, Delft, The Netherlands
Interests: shape memory materials; additive manufacturing; solidification; microstructure

E-Mail Website
Guest Editor
Department of Materials Science and Engineering, Delft University of Technology, Mekelweg 2, CD 2628 Delft, The Netherlands
Interests: design of materials through additive manufacturing; additively manufactured smart materials; fracture and fatigue; microstructure-damage evolution
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Special Issue Information

Dear Colleagues,

The forthcoming Special Issue of Crystals, titled "Advances of Shape Memory Alloys," provides a platform for researchers, scientists, and engineers to showcase their cutting-edge work in the realm of shape memory alloys (SMAs). SMAs are materials that exhibit remarkable properties, such as shape memory, superelasticity, and elastocaloric effects. This Special Issue aims to elucidate and consolidate the recent trends and breakthroughs in this field.

Shape memory alloy composition: Authors are invited to contribute their insights into the development and optimization of alloy compositions for SMAs. Novel approaches, alloy design strategies, and their effects on SMA functionality are of particular interest.

Characterization techniques: This Special Issue will feature articles that explore state-of-the-art techniques for characterizing SMAs. Research papers elucidating microstructural and mechanical properties of SMAs are encouraged, as these are critical for understanding SMA behavior and performance.

Post-treatment methods: Researchers are encouraged to share their innovative post-treatment techniques for enhancing the properties of SMAs. These methods can include modifications, treatments, and processes that transform SMAs for specific applications, opening new avenues for utilization.

Advanced manufacturing: We invite contributions that delve into advanced manufacturing techniques for SMAs, including additive manufacturing, 3D printing, and other fabrication methods. These approaches offer precise control over SMA component production and have the potential to revolutionize their use in various applications.

By participating in this Special Issue, authors will have the opportunity to contribute to the ever-evolving landscape of shape memory alloys. We aim to provide a comprehensive overview of recent developments in the field, offering valuable insights for those interested in the practical applications and scientific advancements of SMAs.

We look forward to receiving your contributions to make this Special Issue a significant resource for the community, summarizing the progress achieved in recent years in the field of shape memory alloys.

Dr. Jianing Zhu
Dr. Vera Popovich
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

  • shape memory effect 
  • superelasticity
  • alloying composition design
  • post-treatment
  • characterization

Published Papers (1 paper)

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Research

14 pages, 3473 KiB  
Communication
R-Phase Transformation Evolution in NiTi SMA Wires Studied via the Internal Friction Technique
by Yuhao Xu, Junlan Chen, Xinggang Wang, Meng Sun, Xianping Wang and Weibin Jiang
Crystals 2024, 14(5), 476; https://doi.org/10.3390/cryst14050476 - 18 May 2024
Viewed by 406
Abstract
The specific damping capacity variation of heat-treated NiTi was observed during a pseudoelasticity test. The detailed B2 → R-phase transformation process in cold-drawn NiTi wires undergoing middle-temperature aging was studied via X-ray diffraction, transmission electron microscope, and internal friction technique. Results show that, [...] Read more.
The specific damping capacity variation of heat-treated NiTi was observed during a pseudoelasticity test. The detailed B2 → R-phase transformation process in cold-drawn NiTi wires undergoing middle-temperature aging was studied via X-ray diffraction, transmission electron microscope, and internal friction technique. Results show that, as aging time increased at 450 °C, the dynamic phase transition splitting from B2 → R to B2 → R1 and B2 → R2 became evident. However, such a splitting process was not observed for the sample after aging at 400 °C. The reason for R-phase generation is attributed to non-uniformly distributed stress fields. The splitting of the internal friction peak, in conjunction with high-resolution transmission electron microscope and mechanic results, suggests a substantial occurrence of short-range segregation of Ni atoms in the B2-NiTi matrix. Furthermore, the specific damping capacity (SDC) exhibits a gradual increase with prolonged annealing time. Specifically, the sample with significant dynamic phase transition splitting reaches an SDC value of 0.60. Full article
(This article belongs to the Special Issue Advances of Shape Memory Alloys)
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