A simple variant selection in stress-driven martensitic transformation
Abstract
The study of orientation variant selection helps to reveal the mechanism and dynamic process of martensitic transformations driven by temperature or pressure/stress. This is challenging due to the multiple variants which may coexist. While effects of temperature and microstructure in many martensitic transformations have been studied in detail, effects of stress and pressure are much less understood. Here, an in situ variant selection study of Mn 2 O 3 across the cubic-to-orthorhombic martensitic transformation explores orientation variants at pressures up to 51.5 GPa and stresses up to 5.5 GPa, using diamond anvil cells in radial geometry with synchrotron X-ray diffraction. The diamonds not only exert pressure but also impose stress and cause plastic deformation and texture development. The crystal orientation changes were followed in situ and a {110} c 〈001〉 c // (100) o 〈010〉 o relationship was observed. Only the {110} c plane perpendicular to the stress direction was selected to become (100) o , resulting in a very strong texture of the orthorhombic phase. Contrary to most other martensitic transformations, this study reveals a clear and simple variant selection that is attributed to structural distortions undermore »
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1532817
- Grant/Contract Number:
- FG02-05ER15637
- Resource Type:
- Published Article
- Journal Name:
- Proceedings of the National Academy of Sciences of the United States of America
- Additional Journal Information:
- Journal Name: Proceedings of the National Academy of Sciences of the United States of America; Journal ID: ISSN 0027-8424
- Publisher:
- Proceedings of the National Academy of Sciences
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Yue, Binbin, Hong, Fang, Hirao, Naohisa, Vasin, Roman, Wenk, Hans-Rudolf, Chen, Bin, and Mao, Ho-Kwang. A simple variant selection in stress-driven martensitic transformation. United States: N. p., 2019.
Web. doi:10.1073/pnas.1906365116.
Yue, Binbin, Hong, Fang, Hirao, Naohisa, Vasin, Roman, Wenk, Hans-Rudolf, Chen, Bin, & Mao, Ho-Kwang. A simple variant selection in stress-driven martensitic transformation. United States. doi:10.1073/pnas.1906365116.
Yue, Binbin, Hong, Fang, Hirao, Naohisa, Vasin, Roman, Wenk, Hans-Rudolf, Chen, Bin, and Mao, Ho-Kwang. Wed .
"A simple variant selection in stress-driven martensitic transformation". United States. doi:10.1073/pnas.1906365116.
@article{osti_1532817,
title = {A simple variant selection in stress-driven martensitic transformation},
author = {Yue, Binbin and Hong, Fang and Hirao, Naohisa and Vasin, Roman and Wenk, Hans-Rudolf and Chen, Bin and Mao, Ho-Kwang},
abstractNote = {The study of orientation variant selection helps to reveal the mechanism and dynamic process of martensitic transformations driven by temperature or pressure/stress. This is challenging due to the multiple variants which may coexist. While effects of temperature and microstructure in many martensitic transformations have been studied in detail, effects of stress and pressure are much less understood. Here, an in situ variant selection study of Mn 2 O 3 across the cubic-to-orthorhombic martensitic transformation explores orientation variants at pressures up to 51.5 GPa and stresses up to 5.5 GPa, using diamond anvil cells in radial geometry with synchrotron X-ray diffraction. The diamonds not only exert pressure but also impose stress and cause plastic deformation and texture development. The crystal orientation changes were followed in situ and a {110} c 〈001〉 c // (100) o 〈010〉 o relationship was observed. Only the {110} c plane perpendicular to the stress direction was selected to become (100) o , resulting in a very strong texture of the orthorhombic phase. Contrary to most other martensitic transformations, this study reveals a clear and simple variant selection that is attributed to structural distortions under pressure and stress.},
doi = {10.1073/pnas.1906365116},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {7}
}
DOI: 10.1073/pnas.1906365116
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A profile refinement method for nuclear and magnetic structures
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