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CDM MODELING OF CREEP BEHAVIOR OF T/P91 STEEL UNDER HIGH STRESSES |
CHEN Yunxiang1, 2), YAN Wei1), HU Ping1, 2), SHAN Yiyin1), YANG Ke1) |
1) Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016
2) Graduate School of Chinese Academy of Sciences, Beijing 100049 |
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Cite this article:
CHEN Yunxiang YAN Wei HU Ping SHAN Yiyin YANG Ke. CDM MODELING OF CREEP BEHAVIOR OF T/P91 STEEL UNDER HIGH STRESSES . Acta Metall Sin, 2011, 47(11): 1372-1377.
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Abstract For safe use of the equipments in power plants, creep life prediction of the material served at high temperature is an important issue. With the purpose of the existing problems in overestimation of creep strengths, it is essential to analyze the creep mechanism and the creep damage to material in serving. In the present work, through analysis on creep curves of the T/P91 thermal resistant steel served in the super critical steam conditioned thermal power plants, the creep mechanism and the creep damage of T/P91 steel during creeping at 600℃ were discussed, and CDM (continuum damage mechanics) model established based on the physical nature was used to simulate the creep curves of T/P91 steel under high stresses. The modeled creep curves are good in agreement with the experimental data.
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Received: 16 May 2011
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Fund: Supported by National Basic Research Program of China (Nos.2008CB717802 and 2010CB630800), High-tech Research Program of ITER of China (No. 2009GB109002) and CAS Knowledge Innovation Project of Major Projects (No.{\footnotesize\it KJCX2--YW--N35}) |
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