文献类型：期刊文献

英文题名：Cyclic behavior of 9-12% Cr steel under different control modes in low cycle regime: A comparative study

作者：Wu, De-Long[1];Zhao, Peng[1];Wang, Qiong-Qi[1];Xuan, Fu-Zhen[1]

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

年份：2015

卷号：70

起止页码：114

外文期刊名：INTERNATIONAL JOURNAL OF FATIGUE

收录：;EI(收录号：20144200103795);WOS:【SCI-EXPANDED(收录号:WOS:000347017400011)】；

基金：The authors are grateful for the supports provided by National Natural Science Foundation of China (51325504) and the National High Technology Research and Development Program of China (2012AA040106).

语种：英文

外文关键词：Low cycle fatigue; Control mode; Tension-compression asymmetry; Cyclic softening; Fatigue life

摘要：Cyclic behavior of 9-12% Cr steel under both stress and strain control modes was investigated at 873 K. Significant asymmetric deformation and cyclic softening were observed for both modes. Under the straincontrolled fatigue, a strain level-independent softening factor (SF) was observed. The SF was dependent on applied stress under the stress-controlled fatigue. For the strain-controlled fatigue, the magnitude of cyclic asymmetry decreases with the increase of strain amplitude, while under the stress-controlled fatigue, the asymmetry increases with the increase of stress amplitude. The anomalous ratcheting strain resulted from the asymmetry under the stress-controlled mode has a detrimental effect on fatigue life. (C) 2014 Elsevier Ltd. All rights reserved.