Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Flare Test and Stress Analysis of Alloy 600/690 Tubes

  • Kim, W. G. (Korea Atomic Energy Research Institute) ;
  • J. Jang (Korea Atomic Energy Research Institute) ;
  • I. H. Kuk (Korea Atomic Energy Research Institute)
  • Published : 1997.04.01
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Abstract

Korean-made alloys 600 and 690 tubes were evaluated by flare tests according to ASTM standards, and acting stresses during the test ore analyzed. All the tubes, including alloys 600 and 690 tubes with various heat treatment conditions, satisfied the requirement with 30 or 35750.D expansion. Axial stresses in alloy 690 tubes were higher than those in alloy 600 ones and the gap increased gradually with flaring percentage(F.P, %). Assuming the tubes as the rigid-perfectly plastic body, a stress equation was obtained using modified Tresca's yield criterion. Also microstructural change of the flared tubes was discussed with the acting stresses.

Keywords

References

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