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Role of intergranular constraint on the stress-induced martensitic transformation in textured polycrystalline NiTi

Publication ,  Journal Article
Gall, K; Lim, TJ; McDowell, DL; Sehitoglu, H; Chumlyakov, YI
Published in: International journal of plasticity
January 1, 2000

The influences of grain boundaries and relative grain misorientations on stress-induced martensitic transformations in NiTi are studied using unique experiments and finite element modeling. Tensile and compressive mechanical tests reveal that polycrystalline NiTi with a dominant 〈111〉 fiber texture and single crystal NiTi oriented along the [111] direction exhibit nearly identical stress-strain curves during a stress-induced martensitic transformation. Micro-mechanical finite element simulations of fiber textured polycrystals and single crystals undergoing a multi-variant martensitic transformation confirm the relative indifference of the macroscopic transformation attributes to the presence of grain boundaries. On the microscale, the finite element simulations further reveal that the insensitivity of the transformation to intergranular constraint is linked to the local stress disturbance created by transforming grains. The transformation of grains that are favorably oriented with respect to the loading axis creates local stresses that invariably assist the transformation with respect to the grains, effectively lowering the influence of grain misorientations and boundaries on the macroscopic transformation behavior.

Duke Scholars

Published In

International journal of plasticity

DOI

ISSN

0749-6419

Publication Date

January 1, 2000

Volume

16

Issue

10

Start / End Page

1189 / 1214

Related Subject Headings

  • Mechanical Engineering & Transports
  • 4017 Mechanical engineering
  • 4016 Materials engineering
  • 4005 Civil engineering
  • 0913 Mechanical Engineering
  • 0912 Materials Engineering
  • 0905 Civil Engineering
 

Citation

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ICMJE
MLA
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Gall, K., Lim, T. J., McDowell, D. L., Sehitoglu, H., & Chumlyakov, Y. I. (2000). Role of intergranular constraint on the stress-induced martensitic transformation in textured polycrystalline NiTi. International Journal of Plasticity, 16(10), 1189–1214. https://doi.org/10.1016/S0749-6419(00)00007-3
Gall, K., T. J. Lim, D. L. McDowell, H. Sehitoglu, and Y. I. Chumlyakov. “Role of intergranular constraint on the stress-induced martensitic transformation in textured polycrystalline NiTi.” International Journal of Plasticity 16, no. 10 (January 1, 2000): 1189–1214. https://doi.org/10.1016/S0749-6419(00)00007-3.
Gall K, Lim TJ, McDowell DL, Sehitoglu H, Chumlyakov YI. Role of intergranular constraint on the stress-induced martensitic transformation in textured polycrystalline NiTi. International journal of plasticity. 2000 Jan 1;16(10):1189–214.
Gall, K., et al. “Role of intergranular constraint on the stress-induced martensitic transformation in textured polycrystalline NiTi.” International Journal of Plasticity, vol. 16, no. 10, Jan. 2000, pp. 1189–214. Scopus, doi:10.1016/S0749-6419(00)00007-3.
Gall K, Lim TJ, McDowell DL, Sehitoglu H, Chumlyakov YI. Role of intergranular constraint on the stress-induced martensitic transformation in textured polycrystalline NiTi. International journal of plasticity. 2000 Jan 1;16(10):1189–1214.
Journal cover image

Published In

International journal of plasticity

DOI

ISSN

0749-6419

Publication Date

January 1, 2000

Volume

16

Issue

10

Start / End Page

1189 / 1214

Related Subject Headings

  • Mechanical Engineering & Transports
  • 4017 Mechanical engineering
  • 4016 Materials engineering
  • 4005 Civil engineering
  • 0913 Mechanical Engineering
  • 0912 Materials Engineering
  • 0905 Civil Engineering