压力容器Issue(9)：23-27,5.DOI:10.3969/j.issn.1001-4837.2014.09.004
蠕变-疲劳载荷下25 Cr2 MoVA 钢的循环应力松弛行为
Cyclic Stress Relaxation Behavior of 25Cr2MoVA Steel under Creep-Fatigue Loadings
摘要
Abstract
Cyclic stress relaxation behavior of high -temperature bolt material 25 Cr2 MoVA was investiga-ted by strain -controlled creep -fatigue tests at 500 ℃.The effects of different strain amplitudes and peak hold time on the stress relaxation behavior of 25Cr2MoVA steel were stressed .Results showed that creep deformation produced during peak hold time together with the visco -plastic deformation took place during cyclic loading stage commonly accelerate the stress relaxation rate of 25 Cr2 MoVA steel , and the strain relaxation rate is greater when the strain amplitude is relatively smaller .关键词
25Cr2MoVA钢/蠕变-疲劳/应力松弛/螺栓Key words
25Cr2MoVA steel/creep-fatigue/stress relaxation/bolt分类
机械制造引用本文复制引用
张红才,郑小涛,轩福贞,王正东..蠕变-疲劳载荷下25 Cr2 MoVA 钢的循环应力松弛行为[J].压力容器,2014,(9):23-27,5.基金项目
国家自然科学基金项目 （）
