Fatigue crack growth

Kocańda, S.

doi:10.1007/978-94-009-9914-5_4

Cited by 2 publications

(4 citation statements)

References 76 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During the test, the applied load was gradually reduced in steps of 40 MPa (to support the determinations within the endurance limit). Load values were selected to produce 10 4 -10 6 cycles characterizing endurance limits [1].…”

Section: Methodsmentioning

confidence: 99%

“…Inclusions may increase the strength of steel by inhibiting the development of micro-cracks. Yet as regards steel, non-metallic inclusions have mostly a negative effect which is dependent on their content, size, shape and distribution [1][2][3]. The mechanical properties and fatigue strength of structural materials should also be evaluated in view of crystallization conditions [4][5][6][7][8][9], manufacturing process [10][11][12], microstructure [13,14], microsegregation [15][16][17][18][19] and the existing defects [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

“…For this reason, coefficient c may equals on a broad range of values. For steel samples subjected to rotary bending, it ranges from 0.36 to 0.6 of tensile strength R m [1].…”

Section: Introductionmentioning

confidence: 99%

“…Coefficients c and p were substituted with coefficient k to convert equation ( 2) to (1). Coefficient k is the quotient of fatigue strength z g divided by Vickers hardness HV (3).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Archives of Metallurgy and Materials

Lipiński

2018

View full text Add to dashboard Cite

The article discusses the effect of the diameter and spacing between impurities (size up to 2 μm) on the fatigue strength coefficient of structural steel during rotary bending. The study was performed on 21 heats produced in an industrial plant. Fourteen heats were produced in 140 ton electric furnaces, and 7 heats were performed in a 100 ton oxygen converter. All heats were desulfurized. Seven heats from electrical furnaces were refined with argon, and heats from the converter were subjected to vacuum circulation degassing. Steel sections with a diameter of 18 mm were hardened for 30 minutes from the austenitizing temperature of 880°C and tempered at a temperature of 200, 300, 400, 500 and 600°C. The experimental variants were compared in view of the applied melting technology and heat treatment options. The results were presented graphically and mathematically to account for the correlations between the fatigue strength coefficient during rotary bending, the diameter of and spacing between submicroscopic impurities. Equations for calculating the fatigue strength coefficient at each tempering temperature and a general equation for all tempering temperatures were proposed. Equations for estimating the fatigue strength coefficient based on the relative volume of submicroscopic non-metallic inclusions were also presented. The relationship between the fatigue strength and hardness of highgrade steel vs. the quotient of the diameter of impurities and the spacing between impurities, and the fatigue strength and hardness of steel vs. the relative volume of submicroscopic non-metallic impurities were determined.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…For this reason, coefficient c may equals on a broad range of values. For steel samples subjected to rotary bending, it ranges from 0.36 to 0.6 of tensile strength R m [1].…”

Section: Introductionmentioning

confidence: 99%

“…Coefficients c and p were substituted with coefficient k to convert equation ( 2) to (1). Coefficient k is the quotient of fatigue strength z g divided by Vickers hardness HV (3).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Archives of Metallurgy and Materials

Lipiński

2018

View full text Add to dashboard Cite

show abstract

Growth Rate of Small Surface-Cracks in Age Hardening Cu-Ni-Si Alloy under Cyclic Stressing

Goto

Yamamoto

Kitamura

et al. 2019

KEM

View full text Add to dashboard Cite

Stress-controlled fatigue tests were conducted on round-bar specimens to understand the fatigue behavior of precipitate-strengthened Cu–6Ni–1.5Si alloy. The cracks were initiated at the grain boundaries, followed by growth along the crystallographic slip planes in the adjacent grains. The crack growth data of plain specimens exhibited a large scatter, resulting in a difficulty of the measurement of crack growth rate. To evaluate the small-crack growth rate of the alloy, the plain specimens with a small blind hole as the crack starter were fatigued. The crack growth rate of small cracks from the hole was uniquely determined by a term σanl and the material constant, n, was 5.3. The term σanl with n = 5.3 was applied to the plain specimen, showing good applicability of the term to small cracks in the plain specimen.

show abstract

Fatigue crack growth

Cited by 2 publications

References 76 publications

Archives of Metallurgy and Materials

Archives of Metallurgy and Materials

Growth Rate of Small Surface-Cracks in Age Hardening Cu-Ni-Si Alloy under Cyclic Stressing

Contact Info

Product

Resources

About