文献类型：期刊文献

英文题名：Coupling effect of manufacturing and creep on remaining strength of 2.25Cr-1Mo-0.25 V steel ring shells

作者：Li, You[1];Jianayihan, Bieerlan[2];Huang, Song[3];Wu, Endong[1];Guan, Chaoxu[1];Wang, Zhenyu[4]

机构：[1]Jiaxing Univ, Coll Mech & Elect Engn, Jiaxing 314001, Peoples R China;[2]China Merchants Xinjiang Special Equipment Inspect, Urumqi 830011, Peoples R China;[3]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[4]Zhejiang Acad Special Equipment Sci, Hangzhou 310020, Peoples R China

年份：2025

卷号：176

外文期刊名：ENGINEERING FAILURE ANALYSIS

收录：;EI(收录号：20251718293955);WOS:【SCI-EXPANDED(收录号:WOS:001479469600001)】；

基金：This work is supported by Natural Science Foundation of Xinjiang Uygur Autonomous Region (Grand No. 2024D01A117) .

语种：英文

外文关键词：2.25Cr-1Mo-0.25V steel ring shell; Data-driven approach; Material strength inhomogeneity; Limit load analysis; Structural integrity evaluation

摘要：Manufacturing and creep inevitably cause material degradation and a subsequent decline in the performance of 2.25Cr-1Mo-0.25 V steel ring shells. However, their combined effect remains inadequately understood, leading to a paucity of reliable assessment methods. The present study introduced an innovative approach to investigate the coupling effect of manufacturing and creep on the remaining strength of 2.25Cr-1Mo-0.25 V steel ring shells. Firstly, a series of experiments-including pre-strain tests, heat treatments, interrupted creep tests, and tensile tests-were carefully conducted. Results indicated that the high-temperature strength of 2.25Cr1Mo-0.25 V steel initially increases with extended creep duration, followed by a subsequent decrease. In contrast, a consistent reduction in strength is observed as warm deformation increases. Secondly, a novel approach was developed for predicting remaining strength, incorporating the coupling effect of manufacturing and creep. This approach integrates a data-driven model for strength prediction, finite element simulation of forming, and a direct technique for limit load analysis. Finally, the strength distribution and evolution of 2.25Cr-1Mo-0.25 V steel ring shells, along with their load-bearing capacity, were calculated and analyzed. Numerical analyses revealed that manufacturing induces material strength inhomogeneity in 2.25Cr-1Mo0.25 V steel ring shells. Additionally, during prolonged creep aging, the central regions of the ring shells consistently demonstrate superior performance compared to the surface regions. As for load-bearing capacity, manufacturing is associated with a reduction of 20 % to 30 %, whereas creep initially results in an increase of up to 10 %, followed by a subsequent decrease of 25 %. Furthermore, a diminished diameter-to-thickness ratio is correlated with an increased likelihood of premature failure. This work contributes to the safety assessments of high-temperature hydrogen-bearing pressure vessels.