Molecular Dynamics Modeling of the Effect of Nanotwins on the Superelasticity of Single-Crystalline NiTi Alloys
Joint Authors
Zeng, Xiang-guo
Chen, Huayan
Guo, Yang
Han, Tixin
Tian, Heyi
Wang, Fang
Source
Advances in Materials Science and Engineering
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-09-17
Country of Publication
Egypt
No. of Pages
9
Abstract EN
The objective of this work is to simulate the superelasticity and shape-memory effect in a single-crystalline nickel-titanium (NiTi) alloy through a molecular dynamics (MD) study.
Cooling and heating processes for this material are reproduced to investigate the temperature-induced phase transformation in its microstructure.
It is found that the martensitic transformation and its reverse process occur accompanied by an abrupt volume change, and the transformed variants lead to the appearance of the (001) type compound twin.
In addition, the transform temperatures for martensite start (Ms) and austenite finish (Af) are determined, respectively.
The results indicate that when the temperature is beyond Af during the compressive loading-unloading, the superelastic behavior becomes pronounced, which is attributed to the role of nanotwins on the transformation from the austenitic phase (B2) to martensitic phase (B19′).
Compared to existing experimental data, a reasonable agreement is achieved through the modeling results, highlighting the importance of the compound twins for dominating the superelasticity of nanostructured NiTi alloys.
American Psychological Association (APA)
Guo, Yang& Zeng, Xiang-guo& Chen, Huayan& Han, Tixin& Tian, Heyi& Wang, Fang. 2017. Molecular Dynamics Modeling of the Effect of Nanotwins on the Superelasticity of Single-Crystalline NiTi Alloys. Advances in Materials Science and Engineering،Vol. 2017, no. 2017, pp.1-9.
https://search.emarefa.net/detail/BIM-1124678
Modern Language Association (MLA)
Guo, Yang…[et al.]. Molecular Dynamics Modeling of the Effect of Nanotwins on the Superelasticity of Single-Crystalline NiTi Alloys. Advances in Materials Science and Engineering No. 2017 (2017), pp.1-9.
https://search.emarefa.net/detail/BIM-1124678
American Medical Association (AMA)
Guo, Yang& Zeng, Xiang-guo& Chen, Huayan& Han, Tixin& Tian, Heyi& Wang, Fang. Molecular Dynamics Modeling of the Effect of Nanotwins on the Superelasticity of Single-Crystalline NiTi Alloys. Advances in Materials Science and Engineering. 2017. Vol. 2017, no. 2017, pp.1-9.
https://search.emarefa.net/detail/BIM-1124678
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1124678