In-situ, microscale characterization of heterogeneous deformation around notch in martensitic Shape Memory Alloy
Abstract
Deformation characterization of low-symmetry phases such as martensite in SMAs is difficult due to a fine-scale hierarchical microstructure. With X-ray microLaue diffraction, in-situ deformation of martensite is examined in a notched NiTi specimen. The local deformation is influenced by the notch stress field, initial martensite microstructure, and interaction between notch stress field and the external load. The microstructure evolves heterogeneously and inelastically, with detwinning and twin nucleation occurring simultaneously through loading. These results contrast with the traditional view of martensite deformation that is partitioned in three distinct regimes: elasticity, reorientation and de-twinning.
- Authors:
-
- Northwestern Univ., Evanston, IL (United States)
- Colorado School of Mines, Golden, CO (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Siberian Physical Technical Inst., Tomsk (Russia)
- Duke Univ., Durham, NC (United States)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1580412
- Alternate Identifier(s):
- OSTI ID: 1693840
- Grant/Contract Number:
- AC02-05CH11231; SC0010594
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing
- Additional Journal Information:
- Journal Volume: 771; Journal Issue: C; Journal ID: ISSN 0921-5093
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Nickel Titanium; Shape Memory Alloys; Martensite deformation; Microdiffraction; Notch deformation
Citation Formats
Paul, Partha P., Paranjape, Harshad M., Tamura, Nobumichi, Chumlyakov, Yuri I., and Brinson, L. Catherine. In-situ, microscale characterization of heterogeneous deformation around notch in martensitic Shape Memory Alloy. United States: N. p., 2019.
Web. doi:10.1016/j.msea.2019.138605.
Paul, Partha P., Paranjape, Harshad M., Tamura, Nobumichi, Chumlyakov, Yuri I., & Brinson, L. Catherine. In-situ, microscale characterization of heterogeneous deformation around notch in martensitic Shape Memory Alloy. United States. https://doi.org/10.1016/j.msea.2019.138605
Paul, Partha P., Paranjape, Harshad M., Tamura, Nobumichi, Chumlyakov, Yuri I., and Brinson, L. Catherine. Fri .
"In-situ, microscale characterization of heterogeneous deformation around notch in martensitic Shape Memory Alloy". United States. https://doi.org/10.1016/j.msea.2019.138605. https://www.osti.gov/servlets/purl/1580412.
@article{osti_1580412,
title = {In-situ, microscale characterization of heterogeneous deformation around notch in martensitic Shape Memory Alloy},
author = {Paul, Partha P. and Paranjape, Harshad M. and Tamura, Nobumichi and Chumlyakov, Yuri I. and Brinson, L. Catherine},
abstractNote = {Deformation characterization of low-symmetry phases such as martensite in SMAs is difficult due to a fine-scale hierarchical microstructure. With X-ray microLaue diffraction, in-situ deformation of martensite is examined in a notched NiTi specimen. The local deformation is influenced by the notch stress field, initial martensite microstructure, and interaction between notch stress field and the external load. The microstructure evolves heterogeneously and inelastically, with detwinning and twin nucleation occurring simultaneously through loading. These results contrast with the traditional view of martensite deformation that is partitioned in three distinct regimes: elasticity, reorientation and de-twinning.},
doi = {10.1016/j.msea.2019.138605},
journal = {Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing},
number = C,
volume = 771,
place = {United States},
year = {2019},
month = {11}
}
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