Applied Microscopy

Korean Society of Microscopy (한국현미경학회)
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Deformation Behavior of Corrosion-Resistant Fe-Cr Alloy

  • Era, Hidenori (Department Materials Science and Engineering, Kyushu Institute of Technology) ;
  • Kono, Yusuke (Graduate School, Kyushu Institute of Technology) ;
  • Sasabuchi, Ryota (Graduate School, Kyushu Institute of Technology) ;
  • Miyoshi, Noriko (Graduate School, Kyushu Institute of Technology) ;
  • Tokunaga, Tatsuya (Department Materials Science and Engineering, Kyushu Institute of Technology) ;
  • Shinozaki, Nobuya (Department of Life Science and Systems Engineering, Kyushu Institute of Technology) ;
  • Lee, Je-Hyun (School of Materials Science and Engineering, Changwon National University) ;
  • Shimozaki, Toshitada (Engineering Research Center, Changwon National University)
  • Received : 2016.02.03
  • Accepted : 2016.03.14
  • Published : 2016.03.30
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Abstract

Iron containing a high amount of chromium is known to be inferior to ductility due to ${\sigma}$ phase formation so that it is generally difficult to apply the plastic deformation process although the alloy possesses a superior characteristics of an excellent corrosion resistance. In this study, Fe-50mass%Cr alloy was melted using high purity powder and the deformation behavior has been investigated by cold rolling and tensile test. The tensile test yielded that the alloy revealed a serration at an early stage of tensile deformation and then the serrated flow vanished to change to a normal work hardening flow at the later stage. The former was governed by twin formation process, the latter by dislocation multiplication one, bringing about a high ductility of 20% or over. The reduction ratio in cold rolling was attained as high as 90%, thus the high corrosion-resistant alloy is able to possess a high ductility.

Keywords

References

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