ROTATING-BENDING FATIGUE IN A LOW-CARBON STEEL

被引：0
|
作者：
Yordanova, Rozina [1 ]
Angelova, Donka [1 ]
Naydenova, Zoya [1 ]
Stoyanova-Ivanova, Angelina [2 ]
Mikli, Valdek [3 ]
机构：
[1] Univ Chem Technol & Met, Sofia, Bulgaria
[2] Bulgarian Acad Sci, Georgi Nadjakov Inst Solid State Phys, Sofia, Bulgaria
[3] Tallinn Univ Technol, Ctr Mat Res, Tallinn, Estonia
来源：
STRUCTURAL INTEGRITY AND LIFE-INTEGRITET I VEK KONSTRUKCIJA | 2010年 / 10卷 / 02期
关键词：
crack propagation; low-carbon low-alloyed steel; rotation bending fatigue; band structure;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Short crack propagation behaviour of a low-carbon low-alloyed construction steel, ROLCLAS 09G2 is investigated under stress ranges Delta sigma=500; 540; and 580 MPa and testing frequency f = 11 Hz at rotating-bending fatigue. The applied loading scheme is symmetric with a loading ratio R = -1. Two groups of specimens without and with a layer are tested in air. All fatigue tests are carried out on a table model Fatigue Rotating Bending Machine, FATROBEM-2004 at UCTM-Sofia, Bulgaria. Short fatigue crack growth behaviour of ROLCLAS 09G2 in-air is presented in plots "Crack lengths, a, against corresponding numbers of cycles, N", for the two groups of specimens and compared graphically and microstructurally. The specific band structure of ROLCLAS 09G2 makes it possible to use the steel as a modelling material in relation to composite materials.
引用
收藏
页码：89 / 94
页数：6
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