Deformation of NiTiCu shape memory single crystals in compression

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Huseyin Sehitoglu
  • Ibrahim Karaman
  • Y.-X. Zhang
  • Hong Kim
  • Yuriy Chumlyakov
  • I. Kireeva
  • Hans J. Maier

Externe Organisationen

  • University of Illinois Urbana-Champaign (UIUC)
  • Tomsk State University
  • Universität Paderborn
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Details

OriginalspracheEnglisch
Aufsatznummer64
Seiten (von - bis)477-489
Seitenumfang13
FachzeitschriftMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Jahrgang32
Ausgabenummer3
PublikationsstatusVeröffentlicht - 2001
Extern publiziertJa

Abstract

Single-crystal orientations of NiTi10Cu alloys were studied under incremental, cyclic compression conditions to establish the pseudoelastic and shape memory response of this class of alloys. This material exhibits a two-step transformation involving cubic to orthorhombic martensite (B2 → B19) followed by orthorhombic to monoclinic martensite (B19 → B19′). The transformation parameters (shear magnitudes and directions for habit and twin planes) were determined associated with the B2 → B19 transformation. The growth of monoclinic martensite correspondent variant pairs (CVPs) emanating from the orthorhombic structure was also analyzed. The transformation strain for the B2 → B19 case was orientation dependent and lower than the B19 → B19′ transformation in compression for all orientations except those near the [001] pole. The experimental results show that the critical transformation stress is orientation dependent and is in the range 30 to 58 MPa. Orientations that exhibit lower transformation stress (or high resolved shear stress factors, [100] and [012]) produce higher recoverable strains (as high as 4 pct), while other orientations ([011], [111], and [123]) with lower resolved shear stress factors result in recoverable strains less than 3 pct. At higher strains, inelastic deformation develops, limiting recoverability. The recoverable strains are lower than the theoretical values for two main reasons: the transformation is curtailed first by austenite slip and subsequently by martensite slip, and the orthorhombic structure does not fully transform to the monoclinic martensite.

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Deformation of NiTiCu shape memory single crystals in compression. / Sehitoglu, Huseyin; Karaman, Ibrahim; Zhang, Y.-X. et al.
in: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Jahrgang 32, Nr. 3, 64, 2001, S. 477-489.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Sehitoglu H, Karaman I, Zhang YX, Kim H, Chumlyakov Y, Kireeva I et al. Deformation of NiTiCu shape memory single crystals in compression. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science. 2001;32(3):477-489. 64. doi: 10.1007/s11661-001-0064-3
Sehitoglu, Huseyin ; Karaman, Ibrahim ; Zhang, Y.-X. et al. / Deformation of NiTiCu shape memory single crystals in compression. in: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science. 2001 ; Jahrgang 32, Nr. 3. S. 477-489.
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title = "Deformation of NiTiCu shape memory single crystals in compression",
abstract = "Single-crystal orientations of NiTi10Cu alloys were studied under incremental, cyclic compression conditions to establish the pseudoelastic and shape memory response of this class of alloys. This material exhibits a two-step transformation involving cubic to orthorhombic martensite (B2 → B19) followed by orthorhombic to monoclinic martensite (B19 → B19′). The transformation parameters (shear magnitudes and directions for habit and twin planes) were determined associated with the B2 → B19 transformation. The growth of monoclinic martensite correspondent variant pairs (CVPs) emanating from the orthorhombic structure was also analyzed. The transformation strain for the B2 → B19 case was orientation dependent and lower than the B19 → B19′ transformation in compression for all orientations except those near the [001] pole. The experimental results show that the critical transformation stress is orientation dependent and is in the range 30 to 58 MPa. Orientations that exhibit lower transformation stress (or high resolved shear stress factors, [100] and [012]) produce higher recoverable strains (as high as 4 pct), while other orientations ([011], [111], and [123]) with lower resolved shear stress factors result in recoverable strains less than 3 pct. At higher strains, inelastic deformation develops, limiting recoverability. The recoverable strains are lower than the theoretical values for two main reasons: the transformation is curtailed first by austenite slip and subsequently by martensite slip, and the orthorhombic structure does not fully transform to the monoclinic martensite.",
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Download

TY - JOUR

T1 - Deformation of NiTiCu shape memory single crystals in compression

AU - Sehitoglu, Huseyin

AU - Karaman, Ibrahim

AU - Zhang, Y.-X.

AU - Kim, Hong

AU - Chumlyakov, Yuriy

AU - Kireeva, I.

AU - Maier, Hans J.

N1 - Funding Information: The research is supported by a grant from the Department of Energy, Basic Energy Sciences Division (Germantown, MD), DOE DEFG02-93ER14393, and the National Science Foundation, Contract No. CMS 99-00090, Mechanics and Materials Program (Arlington, VA). Professor Chumlyakov received support from the Russian Fund for Basic Researches, Grant Nos. 02-95-00350 and 03-99-32579. The facilities at Microanalysis of Materials, Materials Research Laboratory, were used. This laboratory is funded by DOE-DMS Grant No. DEFG02-96ER45439.

PY - 2001

Y1 - 2001

N2 - Single-crystal orientations of NiTi10Cu alloys were studied under incremental, cyclic compression conditions to establish the pseudoelastic and shape memory response of this class of alloys. This material exhibits a two-step transformation involving cubic to orthorhombic martensite (B2 → B19) followed by orthorhombic to monoclinic martensite (B19 → B19′). The transformation parameters (shear magnitudes and directions for habit and twin planes) were determined associated with the B2 → B19 transformation. The growth of monoclinic martensite correspondent variant pairs (CVPs) emanating from the orthorhombic structure was also analyzed. The transformation strain for the B2 → B19 case was orientation dependent and lower than the B19 → B19′ transformation in compression for all orientations except those near the [001] pole. The experimental results show that the critical transformation stress is orientation dependent and is in the range 30 to 58 MPa. Orientations that exhibit lower transformation stress (or high resolved shear stress factors, [100] and [012]) produce higher recoverable strains (as high as 4 pct), while other orientations ([011], [111], and [123]) with lower resolved shear stress factors result in recoverable strains less than 3 pct. At higher strains, inelastic deformation develops, limiting recoverability. The recoverable strains are lower than the theoretical values for two main reasons: the transformation is curtailed first by austenite slip and subsequently by martensite slip, and the orthorhombic structure does not fully transform to the monoclinic martensite.

AB - Single-crystal orientations of NiTi10Cu alloys were studied under incremental, cyclic compression conditions to establish the pseudoelastic and shape memory response of this class of alloys. This material exhibits a two-step transformation involving cubic to orthorhombic martensite (B2 → B19) followed by orthorhombic to monoclinic martensite (B19 → B19′). The transformation parameters (shear magnitudes and directions for habit and twin planes) were determined associated with the B2 → B19 transformation. The growth of monoclinic martensite correspondent variant pairs (CVPs) emanating from the orthorhombic structure was also analyzed. The transformation strain for the B2 → B19 case was orientation dependent and lower than the B19 → B19′ transformation in compression for all orientations except those near the [001] pole. The experimental results show that the critical transformation stress is orientation dependent and is in the range 30 to 58 MPa. Orientations that exhibit lower transformation stress (or high resolved shear stress factors, [100] and [012]) produce higher recoverable strains (as high as 4 pct), while other orientations ([011], [111], and [123]) with lower resolved shear stress factors result in recoverable strains less than 3 pct. At higher strains, inelastic deformation develops, limiting recoverability. The recoverable strains are lower than the theoretical values for two main reasons: the transformation is curtailed first by austenite slip and subsequently by martensite slip, and the orthorhombic structure does not fully transform to the monoclinic martensite.

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DO - 10.1007/s11661-001-0064-3

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VL - 32

SP - 477

EP - 489

JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

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SN - 1073-5623

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ER -

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