In-situ, microscale characterization of heterogeneous deformation around notch in martensitic Shape Memory Alloy

Paul, Partha P.; Paranjape, Harshad M.; Tamura, Nobumichi; Chumlyakov, Yuri I.; Brinson, L. Catherine

doi:10.1016/j.msea.2019.138605

Title: In-situ, microscale characterization of heterogeneous deformation around notch in martensitic Shape Memory Alloy

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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:

Paul, Partha P. ^[1]; Paranjape, Harshad M. ^[2]; Tamura, Nobumichi ^[3]; Chumlyakov, Yuri I. ^[4]; Brinson, L. Catherine ^[5]

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:: 2019-11-01

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.  https://doi.org/10.1016/j.msea.2019.138605.

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                    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

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                    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.

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@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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