材料工程Issue(1)：40-44,5.DOI:10.3969/j.issn.1001-4381.2013.01.009
S135钻杆钢的拉扭复合加载疲劳行为
Biaxial Fatigue Behavior Under Combined Axial and Torsional Loading for S135 Drill Pipe Steel
雒设计 1赵康 2王荣1
作者信息
- 1. 西安理工大学材料科学与工程学院,西安710048
- 2. 西安石油大学材料科学与工程学院,西安710065
- 折叠
摘要
Abstract
Biaxial fatigue behavior under combined axial and torsional loading for S135 drill pipe steel was investigated by means of fatigue tests and data regression analysis methods, and the fracture surfaces were observed through scanning electron microscopy. The results show that when τa/σed is 0. 7 the fatigue life regulation of S135 drill pipe steel under combined axial and torsional loading can be represented well by the fatigue life equation, which is expressed by equivalent stress of tension-torsion stress amplitude. The fracture surfaces are mainly divided into three regions such as the crack initiation, steady crack propagation and instantaneous fracture. Fatigue cracks mainly initiate at the specimen surface and propagate rapidly in specimen. Fatigue cracks are multiple source and the so-called ridge patterns were formed by connecting the different fatigue source and combined loading. The fracture surfaces are characteristic of river patterns at crack initiation region, the fracture surfaces are characteristic of fatigue striation and rippled patterns at crack propagation region.关键词
S135钻杆钢/双轴疲劳/同相位/拉扭复合加载/断口Key words
S135 drill pipe steel/biaxial fatigue/in-phase/ combined axial-torsional loading/ fracture分类
数理科学引用本文复制引用
雒设计,赵康,王荣..S135钻杆钢的拉扭复合加载疲劳行为[J].材料工程,2013,(1):40-44,5.
