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Micro and Macromechanical Investigations of CuAlNi Single Crystal and CuAlMnZn Polycrystalline Shape Memory Alloys.

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Title: Micro and Macromechanical Investigations of CuAlNi Single Crystal and CuAlMnZn Polycrystalline Shape Memory Alloys.
Authors: Brinson, L. Catherine, Schmidt, Ina, Lammering, Rolf
Source: Journal of Intelligent Material Systems & Structures. Dec2002, Vol. 13 Issue 12, p761-772. 12p. 13 Black and White Photographs, 2 Diagrams, 8 Graphs.
Subjects: Shape memory alloys, Copper alloys, Polycrystals, Micromechanics
Abstract: The micro and macromechanical transformation behavior of single and polycrystalline shape memory alloys was investigated using in situ optical microscopy. An interference filter was used on the microscope to enhance observation of grain boundaries and martensitic plate formation and growth. Experiments on CuAlMnZn polycrystals as well as CuAlNi single crystal shape memory alloys were performed and results are reported in this paper. Cyclic behavior, temperature effects and strain rate effects were studied in detail. Excellent correlation between stress relaxation and temperature decay at several strain rates was achieved. At high strain rates, a dramatic redistribution of martensitic variants was seen in the single crystal specimens after loading to a fixed strain. Tests were performed at different temperatures to help identify the mechanism for variant redistribution. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Intelligent Material Systems & Structures is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 10096825
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PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: Micro and Macromechanical Investigations of CuAlNi Single Crystal and CuAlMnZn Polycrystalline Shape Memory Alloys.
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  Data: <searchLink fieldCode="AR" term="%22Brinson%2C+L%2E+Catherine%22">Brinson, L. Catherine</searchLink><br /><searchLink fieldCode="AR" term="%22Schmidt%2C+Ina%22">Schmidt, Ina</searchLink><br /><searchLink fieldCode="AR" term="%22Lammering%2C+Rolf%22">Lammering, Rolf</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Intelligent+Material+Systems+%26+Structures%22">Journal of Intelligent Material Systems & Structures</searchLink>. Dec2002, Vol. 13 Issue 12, p761-772. 12p. 13 Black and White Photographs, 2 Diagrams, 8 Graphs.
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  Data: <searchLink fieldCode="DE" term="%22Shape+memory+alloys%22">Shape memory alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Copper+alloys%22">Copper alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Polycrystals%22">Polycrystals</searchLink><br /><searchLink fieldCode="DE" term="%22Micromechanics%22">Micromechanics</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The micro and macromechanical transformation behavior of single and polycrystalline shape memory alloys was investigated using in situ optical microscopy. An interference filter was used on the microscope to enhance observation of grain boundaries and martensitic plate formation and growth. Experiments on CuAlMnZn polycrystals as well as CuAlNi single crystal shape memory alloys were performed and results are reported in this paper. Cyclic behavior, temperature effects and strain rate effects were studied in detail. Excellent correlation between stress relaxation and temperature decay at several strain rates was achieved. At high strain rates, a dramatic redistribution of martensitic variants was seen in the single crystal specimens after loading to a fixed strain. Tests were performed at different temperatures to help identify the mechanism for variant redistribution. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Intelligent Material Systems & Structures is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1177/1045389X02013012002
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      – Code: eng
        Text: English
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        PageCount: 12
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      – SubjectFull: Shape memory alloys
        Type: general
      – SubjectFull: Copper alloys
        Type: general
      – SubjectFull: Polycrystals
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      – SubjectFull: Micromechanics
        Type: general
    Titles:
      – TitleFull: Micro and Macromechanical Investigations of CuAlNi Single Crystal and CuAlMnZn Polycrystalline Shape Memory Alloys.
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            NameFull: Brinson, L. Catherine
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            NameFull: Schmidt, Ina
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              Text: Dec2002
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              Y: 2002
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