文献类型：期刊文献

英文题名：Inferring the temperature dependence of Beremin cleavage model parameters from the Master Curve

作者：Cao, Yupeng[1];Hui, Hu[1];Wang, Guozhen[1];Xuan, Fu-Zhen[1]

机构：[1]E China Univ Sci & Technol, Sch Mech Engn, MOE, Key Lab Pressure Syst & Safety, Shanghai 200237, Peoples R China

年份：2011

卷号：241

期号：1

起止页码：39

外文期刊名：NUCLEAR ENGINEERING AND DESIGN

收录：;EI(收录号：20110113541464);WOS:【SCI-EXPANDED(收录号:WOS:000287049900005)】；

基金：This work was financially supported by Natural Science Funds of China (50705029, 10972078) and National High-tech Research and Development Program (863 Program) of China (2009 AA04Z421) and Natural Science Foundation of Shanghai (09JC1404400).

语种：英文

外文关键词：Uncertainty analysis - Intelligent systems - Manganese alloys - Monte Carlo methods - Temperature distribution

摘要：The temperature dependence of Beremin model parameters in the ductile-to-brittle transition region was addressed by employing the Master Curve. Monte Carlo simulation was performed to produce a large number of 1T fracture toughness data randomly drawn from the scatter band at a temperature of interest and thus to determine Beremin model parameters. In terms of the experimental data of a C-Mn steel (the 16MnR steel in China), results revealed that the Weibull modulus, m, decreases with temperature over the lower transition range and remains a constant in the lower-to-mid transition region. The Weibull scale parameter, sigma(u), increases with temperature over the temperature range of investigated. A small sample may lead to a considerable uncertainty in estimates of the Weibull stress parameters. However, no significant difference was observed for the average of Weibull stress parameters from different sample sizes. (C) 2010 Elsevier B.V. All rights reserved.