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Creep Buckling and Post Buckling Behaviors of Stainless Steel Tube Columns Under External Pressure at Extremely High Temperatures

[+] Author Affiliations
Byeongnam Jo, Koji Okamoto

University of Tokyo, Tokai-mura, Japan

Naoto Kasahara

University of Tokyo, Hongo, Japan

Paper No. PVP2016-63226, pp. V003T03A085; 7 pages
doi:10.1115/PVP2016-63226
From:
  • ASME 2016 Pressure Vessels and Piping Conference
  • Volume 3: Design and Analysis
  • Vancouver, British Columbia, Canada, July 17–21, 2016
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 978-0-7918-5039-8
  • Copyright © 2016 by ASME

abstract

Creep buckling failure of a stainless steel tube column was investigated at three temperature conditions (800, 900, and 1000 °C). 304 grade stainless steel was used as a test material in this study. In creep tests, external pressure was increased to a target value, temperature of the tube column was quickly increased to a target temperature, and failure time was measured maintaining the pressure and the temperature. Based on the experimental results of the creep buckling failure time, an empirical correlation was developed by the Larson-Miller parameter. Moreover, post buckling experiments were performed to examine buckling-induced boundary failure at extremely high temperature more than 1300 °C. Additional heating was applied to the specimen which already buckled by external pressure. In the additional heating tests, temperature was increased until boundary failure was formed on the surface of the tube columns. The results showed that the creep buckling failure time was shorter than those in other tensile stress-induced creep tests. The empirical correlation obtained by Larson-Miller parameter predicts well the creep buckling failure time. Finally, boundary failure was obtained in the post buckling under the additional heating.

Copyright © 2016 by ASME

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