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http://hdl.handle.net/10397/106403
Title: | Dissecting the influence of nanoscale concentration modulation on martensitic transformation in multifunctional alloys | Authors: | Zhu, J Wu, HH Yang, XS Huang, H Zhang, TY Wang, Y Shi, SQ |
Issue Date: | Dec-2019 | Source: | Acta materialia, Dec. 2019, v. 181, p. 99-109 | Abstract: | Nanoscale concentration modulation (CM) is a novel and effective approach of manipulating martensitic transformations (MTs) for developing next-generation high-performance shape memory alloys (SMAs). Spinodal decomposition is one of the most economic methods to obtain bulk compositionally modulated materials for practical applications. The wavelength, amplitude, and statistical distribution of CM generated by spinodal decomposition are tunable via adjusting the aging temperature, or the aging time. However, how these features influence the effect of CM on MTs still remains largely unexplored. In this study, theoretical analyses and computer simulations are combined to dissect the influence of these features on the kinetic process of MTs and mechanical properties of SMAs. The findings of this study provide insights and guidance on the design of SMAs for desired mechanical properties via CM engineering. Moreover, the findings are applicable to not only SMAs but also other materials that have MTs, e.g. steels and high-entropy alloys. | Keywords: | Concentration modulation Martensitic transformation Nucleation Shape memory alloy Spinodal decomposition |
Publisher: | Elsevier Ltd | Journal: | Acta materialia | ISSN: | 1359-6454 | EISSN: | 1873-2453 | DOI: | 10.1016/j.actamat.2019.09.044 | Rights: | © 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. The following publication Zhu, J., Wu, H. H., Yang, X. S., Huang, H., Zhang, T. Y., Wang, Y., & Shi, S. Q. (2019). Dissecting the influence of nanoscale concentration modulation on martensitic transformation in multifunctional alloys. Acta Materialia, 181, 99-109 is available at https://doi.org/10.1016/j.actamat.2019.09.044. |
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Zhu_Dissecting_Influence_Nanoscale.pdf | Pre-Published version | 2.91 MB | Adobe PDF | View/Open |
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