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

Metals

Eui Pyo Kwon²  Shigeo Sato¹  Shun Fujieda⁵  Kozo Shinoda⁵  Ryosuke Kainuma⁴  Kentaro Kajiwara³  Masugu Sato³  Shigeru Suzuki⁵  Klaus-Dieter Liss⁶ 

[1] Graduate School of Science and Engineering, Ibaraki University, Hitachi 316-8511, Japan; E-Mail:;Convergence Components & Agricultural Machinery Application Group, Korea Institute of Industrial Technology, Gimje 54325, Korea;Japan Synchrotron Radiation Research Institute, SPring-8, Hyogo 679-5198, Japan; E-Mails:;Department of Materials Science, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan; E-Mail:;Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan; E-Mails:;id="af1-metals-05-01845">1Convergence Components & Agricultural Machinery Application Group, Korea Institute of Industrial Technology, Gimje 54325, Kor

关键词: white X-ray microbeam diffraction;    Cu-Al-Mn alloys;    superelasticity;    microscopic stresses;    martensitic transformation;   

DOI  :  10.3390/met5041845

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.