Affiliation:
1. Korea Atomic Energy Research Institute
2. Soongsil University
Abstract
The creep properties for the Hastelloy-X alloy which is one of candidate alloys for a high
temperature gas-cooled reactor are presented. The creep data was obtained with different stresses at
950oC, and a number of the creep data was collected through literature surveys. All of the creep data
were combined together to obtain the creep constants and to predict a long-term creep life. In the
Norton’s creep law and the Monkman-Grant relationship, the creep constants, A, n, m, and m’ were
obtained. Creep master curves based on the Larson-Miller parameter were presented for the standard
deviations of 1σ, 2σ and 3σ. Creep life at each temperature was predicted for a longer-time rupture
above 105 hours. Failure probability was also estimated by a statistical process of all the creep rupture
data.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
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