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Metals 2015, 5(4), 1845-1856; doi:10.3390/met5041845

Characterization of Deformation Behavior of Individual Grains in Polycrystalline Cu-Al-Mn Superelastic Alloy Using White X-ray Microbeam Diffraction

1
Convergence Components & Agricultural Machinery Application Group, Korea Institute of Industrial Technology, Gimje 54325, Korea
2
Graduate School of Science and Engineering, Ibaraki University, Hitachi 316-8511, Japan
3
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
4
Department of Materials Science, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
5
Japan Synchrotron Radiation Research Institute, SPring-8, Hyogo 679-5198, Japan
*
Authors to whom correspondence should be addressed.
Academic Editors: Klaus-Dieter Liss and Hugo F. Lopez
Received: 3 September 2015 / Revised: 19 September 2015 / Accepted: 29 September 2015 / Published: 9 October 2015
(This article belongs to the Special Issue Metals Challenged by Neutron and Synchrotron Radiation)
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Abstract

White X-ray microbeam diffraction was applied to investigate the microscopic deformation behavior of individual grains in a Cu-Al-Mn superelastic alloy. Strain/stresses were measured in situ at different positions in several grains having different orientations during a tensile test. The results indicated inhomogeneous stress distribution, both at the granular and intragranular scale. Strain/stress evolution showed reversible phenomena during the superelastic behavior of the tensile sample, probably because of the reversible martensitic transformation. However, strain recovery of the sample was incomplete due to the residual martensite, which results in the formation of local compressive residual stresses at grain boundary regions. View Full-Text
Keywords: white X-ray microbeam diffraction; Cu-Al-Mn alloys; superelasticity; microscopic stresses; martensitic transformation white X-ray microbeam diffraction; Cu-Al-Mn alloys; superelasticity; microscopic stresses; martensitic transformation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Kwon, E.P.; Sato, S.; Fujieda, S.; Shinoda, K.; Kainuma, R.; Kajiwara, K.; Sato, M.; Suzuki, S. Characterization of Deformation Behavior of Individual Grains in Polycrystalline Cu-Al-Mn Superelastic Alloy Using White X-ray Microbeam Diffraction. Metals 2015, 5, 1845-1856.

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