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| Creep behavior of CLAM steel at high temperature |
| YE Shuai1，ZHAO Fei1,2，HUANG Fang1，HE Jing1，WANG Jia-lin1 |
（1. College of Materials and Metallurgy， Guizhou University， Guiyang 550025， Guizhou， China
2. Key Laboratory of Guizhou for Mechanical Behavior and Microstructure of Materials， Guiyang 550025， Guizhou， China） |
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Abstract In order to protect the security of CLAM steel under service condition and avoid the damage of theequipmentfrom creep， the creep behavior of CLAM steel was studied. First of all， the creep test of CLAM steel was conducted usinghigh temperature lasting creep testing machine， the creep curve was drawn and the creep deformation properties of CLAM steel under test conditions were discussed.The result showed that CLAM steel was highly sensitive to temperature，and the strengthening mechanism of the second phase particles was main creepmechanism. Secondly， the creep life of CLAM steel was predicted using double logarithmic isothermal extrapolation method and Larson-Miller parametric method， and two kinds of creep life prediction models were confirmed. Atlast， the resultsfromthe two models were compared， and result showed the extrapolation accuracy of Larson-Miller parametric method was higher， matchingwith the actual situation much closer.
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Received: 10 March 2017
Published: 07 September 2017
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2017, Vol. 52 
