Fatigue properties of ultrafine grained low carbon steel produced by equal channel angular pressing

Kim, Ho-Kyung; Choi, Myung-Il; Chung, Chin-Sung; Shin, Dong Hyuk

doi:10.1016/s0921-5093(02)00178-8

Cited by 87 publications

(32 citation statements)

References 15 publications

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“…However, until now, only a few studies on fracture mechanical properties have been presented; specifically, only the cyclic behavior was studied. [10][11][12][13][14][15] In this article, some results on fracture mechanics investigations of specimens of UFG Al and two Al alloys produced by the ECAP, ARB, and MAXstrain process, respectively, are presented in addition to a recent article by the authors on other materials such as copper and Ti. [16] II.…”

Section: Introductionmentioning

confidence: 99%

Static and Cyclic Crack Growth Behavior of Ultrafine-Grained Al Produced by Different Severe Plastic Deformation Methods

Hübner

Kiessling

Biermann

et al. 2007

Metall Mater Trans A

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Fracture-mechanics experiments were carried out on ultrafine-grained (UFG) samples of aluminum and two Al alloys to obtain the fracture behavior under static and cyclic loading. The UFG materials investigated show crack resistance behavior under static loading, which was confirmed by ductile fracture surfaces. Under cyclic load, the crack growth rate was described well by the ESACRACK model. The crack propagation results show no influence of the type of the severe plastic deformation method in the Paris region but more effect in the threshold region.

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Section: Introductionmentioning

confidence: 99%

Static and Cyclic Crack Growth Behavior of Ultrafine-Grained Al Produced by Different Severe Plastic Deformation Methods

Hübner

Kiessling

Biermann

et al. 2007

Metall Mater Trans A

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“…In addition, relation at 80 MPa for CG copper is nearly equivalent to that at 85 MPa for UFG copper. These are different from the growth behavior of other ECAPed Al and steel alloys, in which finer microstructures exhibit higher growth rates [5,6,8]. However, experiments conducted by other alloys were for a long crack initiated from artificial notches.…”

Section: Methodsmentioning

confidence: 59%

“…Since the fatigue life of machine components and structures are mainly controlled by the growth life of a fatigue crack, the crack growth behavior should be clarified for the design of safe machine components and structures. Recently, the growth behaviors of millimeter-range cracks in UFG metals were studied for compacttension [5][6][7] and single edge-notched specimens [8,9]. On the other hand, the fatigue life of smooth specimens is approximately controlled by the growth life of a small surface crack.…”

Section: Introductionmentioning

confidence: 99%

Growth behavior of small surface cracks in coarse and ultrafine grained copper

Goto¹,

Han²,

Ando³

et al. 2009

WIT Transactions on Modelling and Simulation

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Since fatigue life of a plain specimen of ductile metals is controlled mainly by the propagation life of a small surface crack, to clarify the growth behavior of a small crack is crucial to the safe design of smooth members. However, little has been reported on the growth behavior of small surface cracks in ultrafine grained (UFG) metals. In the present study, stress-controlled fatigue tests for coarse grained (CG) and UFG copper were conducted. The surface damage evolution during cyclic stressing was observed by optical microscopy, and the growth behavior of a small surface crack was monitored by a plastic replication technique. The physical background of fatigue damage for CG and UFG copper was discussed from the viewpoints of the initiation and growth behavior of small surface cracks.

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“…Since the fatigue life of machine components and structures are mainly controlled by the growth life of a fatigue crack, the crack growth behavior should be clarified for the design of safe machine components and structures. Recently, the growth behaviors of millimeter-range cracks in UFG metals were studied for compact-tension [5,7,8] and single edge-notched specimens [9,10]. On the other hand, the fatigue life of smooth specimens is approximately controlled by the growth life of a small surface crack [11].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of crack growth rate and growth model of ultrafine grained copper

Goto

Han

Euh

et al. 2011

Computational Methods and Experimental Measurements XV

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High-cycle fatigue tests were carried out on smooth specimens of ultrafine grained (UFG) copper produced by equal channel angular pressing for 12 passes. The growth behavior of a small surface-crack was monitored. A major crack, which led to the final fracture of the specimen, initiated from shear bands (SBs) at an early stage of stressing. Different tendencies of growth behavior occurred depending on the ranges of crack length. To understand the changes in growth rate and fracture surface morphologies, a quantitative model describing a crack growth mechanism were developed considering the reversible plastic zone size at a crack tip. In addition, the crack growth rate of UFG copper was evaluated by applying the small-crack growth raw.

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Fatigue properties of ultrafine grained low carbon steel produced by equal channel angular pressing

Cited by 87 publications

References 15 publications

Static and Cyclic Crack Growth Behavior of Ultrafine-Grained Al Produced by Different Severe Plastic Deformation Methods

Static and Cyclic Crack Growth Behavior of Ultrafine-Grained Al Produced by Different Severe Plastic Deformation Methods

Growth behavior of small surface cracks in coarse and ultrafine grained copper

Evaluation of crack growth rate and growth model of ultrafine grained copper

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