期刊
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
卷 87, 期 6, 页码 304-309出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijpvp.2010.03.010
关键词
Creep rupture strength; Data assessment; X10CrMoVNb9-1; T/P91
A first assessment of creep rupture strength for steel grade X10CrMoVNb9-1 (Grade 91) was performed by ECCC in 1995. The results were included in the European standard EN 10216. Due to a significant increase of test data and test duration it was decided in 2005 to make a re-assessment of the extended database. Different procedures have been used independently by different assessors. The method with the best overall fit of the data set has found to be the ISO CRD method. This is characterized by a two steps procedure: in the first step the mean isotherms are evaluated from the test data, afterwards the evaluated isotherms are used for averaging by a Manson-Haferd master-curve. The results have been chosen as the basis to specify long term creep rupture strength values in a new ECCC data sheet for X10CrMoVNb9-1 (Grade 91). (C) 2010 Elsevier Ltd. All rights reserved.
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