CREEP RUPTURE PROPERTIES AND THEIR DEGRADATION OF HEAT RESISTANT ALLOYS FOR NUCLEAR STEEL MAKING IN HELIUM AND REDUCING GAS ATMOSPHERES.

Tatsuhiko Tanabe, Tatsuo Shikama, Yoshikazu Sakai, Masakazu Fujitsuka, Hiroshi Araki, Heitaro Yoshida, Ryoji Watanabe

Research output: Contribution to journalArticlepeer-review

Abstract

Creep rupture properties of heat resistant alloys with carbide or carbide and gamma prime precipitates were investigated in the temperature range from 900 degree C to 1050 degree C in He and reducing gas atmospheres. Degradation of rupture strengths took place due to decarburization in He at temperature above 1000 degree C. In the alloy which was strengthened mainly by gamma prime , solutioning of gamma led to degradation of strength, but to restoration of rupture ductilities. A new method to predict rupture life and steady state creep rate from 0. 2% proof stress is proposed.

Original languageEnglish
Pages (from-to)2052-2059
Number of pages8
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume69
Issue number16
DOIs
Publication statusPublished - 1983 Jan 1

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

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