TY - JOUR
T1 - CREEP RUPTURE PROPERTIES AND THEIR DEGRADATION OF HEAT RESISTANT ALLOYS FOR NUCLEAR STEEL MAKING IN HELIUM AND REDUCING GAS ATMOSPHERES.
AU - Tanabe, Tatsuhiko
AU - Shikama, Tatsuo
AU - Sakai, Yoshikazu
AU - Fujitsuka, Masakazu
AU - Araki, Hiroshi
AU - Yoshida, Heitaro
AU - Watanabe, Ryoji
PY - 1985/12/1
Y1 - 1985/12/1
N2 - 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. The degradation of the rupture strengths took place in the alloys, which have carbide as a strengthener, due to decarburization in He atmosphere at temperature higher than 1000 degree C. In the alloy which was strengthened mainly by gamma prime , the dissolution of gamma prime led to the degradation of the rupture strengths, but to the restoration of the rupture ductilities in greater extent. A new method to predict the rupture life, steady state creep rate, etc. from 0. 2% proof stress was proposed. In most cases, the method was found to be satisfactory in the sense that it represents the degradation behavior of the alloys according to various causes.
AB - 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. The degradation of the rupture strengths took place in the alloys, which have carbide as a strengthener, due to decarburization in He atmosphere at temperature higher than 1000 degree C. In the alloy which was strengthened mainly by gamma prime , the dissolution of gamma prime led to the degradation of the rupture strengths, but to the restoration of the rupture ductilities in greater extent. A new method to predict the rupture life, steady state creep rate, etc. from 0. 2% proof stress was proposed. In most cases, the method was found to be satisfactory in the sense that it represents the degradation behavior of the alloys according to various causes.
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M3 - Article
AN - SCOPUS:0022327364
VL - 27
SP - 254
EP - 261
JO - Transactions of National Research Institute for Metals (Tokyo)
JF - Transactions of National Research Institute for Metals (Tokyo)
SN - 0453-9222
IS - 4
ER -