Fracture design of medium carbon steel with extra-low cyclic fatigue under cantilever bending and torsional loading

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	Fracture design of medium carbon steel with extra-low cyclic fatigue under cantilever bending and torsional loading
	Duan, Hong-Yan; Sang, Yuan-Cheng; Li, You-Tang
	2015-09-25
发表期刊	Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment
ISSN	10096264
卷号	36 期号:9 页码:55-60
摘要	In order to study the ultra low cycle fatigue fracture parameters and fracture mechanism of the medium carbon steel under cantilever bending and torsional loading, fatigue lifetime of the notched specimens with different notch tip radius were tested by using electro-hydraulic high-frequency fatigue test machine with a special fixture for cantilever bending and torsional loading. The morphology of the fatigue fracture was observed by means of SEM. The results show that the optimum parameters for the fracture design are as follow: the tip radius of notch is 0.1-0.3 mm and the ratio of the notch depth to the specimen diameter, t/b, is 0.075 for the designed samples. Fractography analysis show that multiple fatigue crack originations are observed, and the mode I crack plays the leading role under the fracture surface cantilever bending and torsional loading for the crack propagation. Secondary cracks, tear ridges and fatigue striations exist on the propagation area of the tested specimen fracture surface. ©, 2015, Editorial Office of Transactions of Materials and Heat Treatment. All right reserved.
关键词	Carbon steel Cracks Fatigue of materials Fatigue testing Fracture mechanics Hydraulic machinery Nanocantilevers Stress analysis Structural loads Electro-hydraulics Fatigue striations Fatigue test machine Fracture design Fracture mechanisms Low cycle fatigues Medium-carbon steels Torsional loadings
收录类别	EI
语种	中文
出版者	Editorial Office of Transactions of Materials and Heat Treatment
EI入藏号	20154401471068
EI主题词	Fracture
EI分类号	408.1 Structural Design, General ; 545.3 Steel ; 632.2 Hydraulic Equipment and Machinery ; 761 Nanotechnology ; 931.1 Mechanics ; 933 Solid State Physics ; 951 Materials Science
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/150337
专题	机电工程学院学报编辑部
作者单位	School of Mechanical & Electronic Engineering, Lanzhou University of Technology, Lanzhou, China
第一作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Duan, Hong-Yan,Sang, Yuan-Cheng,Li, You-Tang. Fracture design of medium carbon steel with extra-low cyclic fatigue under cantilever bending and torsional loading[J]. Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment,2015,36(9):55-60.
APA	Duan, Hong-Yan,Sang, Yuan-Cheng,&Li, You-Tang.(2015).Fracture design of medium carbon steel with extra-low cyclic fatigue under cantilever bending and torsional loading.Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment,36(9),55-60.
MLA	Duan, Hong-Yan,et al."Fracture design of medium carbon steel with extra-low cyclic fatigue under cantilever bending and torsional loading".Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment 36.9(2015):55-60.