文献类型：期刊文献

英文题名：Effect and mechanism of out-of-plane constraint on creep crack growth behavior of a Cr-Mo-V steel

作者：Tan, J. P.[1];Tu, S. T.[1];Wang, G. Z.[1];Xuan, F. Z.[1]

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

年份：2013

卷号：99

起止页码：324

外文期刊名：ENGINEERING FRACTURE MECHANICS

收录：;EI(收录号：20131316150064);WOS:【SCI-EXPANDED(收录号:WOS:000317325100025)】；

基金：This work was financially supported by the National Natural Science Foundation of China(Nos. 50835003, 51075149), and the National High Technology Research and Development Program of China (No. 2012AA040103).

语种：英文

外文关键词：Out-of-plane constraint; Creep crack growth; C-integral level; Creep fracture mode; Cr-Mo-V steel

摘要：The effect and mechanism of out-of-plane constraint on creep crack growth rates were experimentally investigated. The results show that the out-of-plane constraint effect on creep crack growth rates is related to C*-integral levels. In low C*-integral region, with increasing out-of-constraint, there is a change in creep fracture mode from ductile to brittle intergranular fracture, which leads to the increase in creep crack growth rates. In middle and high C*-integral regions, the constraint basically has no effect or slight effect on the creep crack growth rates. In creep life assessments, the effects of constraints and C*-integral levels on the creep crack growth rates should be considered. (C) 2013 Elsevier Ltd. All rights reserved.