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説明:

The dynamics of thermoelastic martensitic transformations (MTs) become not straightforward with lowering temperatures due to the manifestation of the thermal activation process. The author recently proposed a new concept of “viscosuperelasticity” of which mathematical expression for the thermal activation of habit plane motion enables to quantitatively reproduce the MT dynamics under both the isothermal and anisothermal (dynamic cooling/heating) conditions. In this study, the time-dependent evolution of MTs is evaluated with the concept of viscosuperelasticity for some representative cases of MT-hosting alloy systems. This concept enables seemingly strange low-temperature behaviors to be explained as manifestations of thermal activation. Furthermore, undiscovered exceptional dynamics are also predicted to occur. This study guides the way to manifest the impact of time from experimentally accessible MT behaviors and provides a systematic understanding of low-temperature MT dynamics.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: 熱活性化, マルテンサイト変態, 相変態ダイナミクス, 等温変態

刊行年月日: 2024-04-21

出版者: Elsevier BV

掲載誌:

• Materials Today Communications (ISSN: 23524928) vol. 39 108987

研究助成金:

• Japan Science and Technology Agency Strategic Basic Research Programs PRESTO
• Japan Society for the Promotion of Science

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1016/j.mtcomm.2024.108987

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更新時刻: 2024-08-26 12:30:34 +0900

MDRでの公開時刻: 2024-08-26 12:30:34 +0900