Prediction of fatigue crack growth and residual stress relaxations in shot-peened material

Liu, Jinxiang; Yuan, Huang; Liao, Ridong

doi:10.1016/j.msea.2010.05.080

Cited by 24 publications

(14 citation statements)

References 18 publications

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“…The formation of residual stresses on the specimen surface induces the fatigue crack initiation at the specimen interior, the improvement of fatigue limit, and the increase in fatigue cycles for initiating the crack, which can extend the fatigue crack initiation stage and the subsequent fatigue life. [27] As discussed previously, in the Zr-based amorphous alloys, the fatigue properties are affected by microstructural parameters and mechanical factors simultaneously. The homogeneous distribution of many ductile b particles in the amorphous matrix leads to the better fatigue properties under the same strength condition.…”

Section: Discussionmentioning

confidence: 91%

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Effects of Shot Peening on Fatigue Properties of Zr-based Amorphous Alloys Containing Ductile Crystalline Particles

Jeon

Son

Kim

et al. 2011

Metall Mater Trans A

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In this study, the fatigue properties of a shot-peened Zr-based amorphous alloy containing ductile crystalline particles were investigated, and fatigue processes were analyzed and compared with those of a non-shot-peened (as-cast) alloy. The microstructural analysis results of the shotpeened alloy surface indicated that the flexion and microstructural deformation were observed as the hot-peening time or pressure increased. However, the compressive residual stress formed on the shot-peened surface was approximately half of the ultimate tensile strength and was not varied much with shot-peening time or pressure. The fatigue limit and fatigue ratio of the shotpeened alloy were 368 MPa and 0.24, respectively, which were considerably higher than those of the as-cast alloy. This was because the compressive residual stress formed by the shot peening induced the initiation of fatigue cracks at the specimen interior instead of the specimen surface and, thus, enhanced the overall fatigue limit and fatigue life. These findings suggested that the shot peening was useful for improving fatigue properties in amorphous alloys.

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Section: Discussionmentioning

confidence: 91%

“…This improvement in the fatigue limit can be explained by the detailed analysis of fracture surfaces. Liu et al [27] investigated the effect of residual stresses on fatigue properties by the finite-element method using a cohesive zone model. The fatigue life was improved as the fatigue stress was compensated by the relieved residual stress.…”

Section: Discussionmentioning

confidence: 99%

Effects of Shot Peening on Fatigue Properties of Zr-based Amorphous Alloys Containing Ductile Crystalline Particles

Jeon

Son

Kim

et al. 2011

Metall Mater Trans A

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“…Xu and Yuan [98,99] have combined this irreversible CZM with XFEM to simulate fatigue crack growth under mixed mode for brittle material and ductile material, respectively. Liu et al [100,101] utilized the model to investigate the influence of shot peening on the fatigue crack growth and relaxation of residual stress under cyclic load. Although some experimental phenomena have been reproduced in numerical simulation, the model cannot obtain the satisfied results in predicting uniaxial fatigue test as shown in [33].…”

Section: Linear Varying Slope Unloading-reloadingmentioning

confidence: 99%

The Cohesive Zone Model for Fatigue Crack Growth

Liu

2013

Advances in Mechanical Engineering

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In the past decade, the cohesive zone model has been receiving increasing attention as a powerful tool for the simulation of fatigue crack growth. When applying cohesive zone model to fatigue fracture problem, three aspects should generally be taken into account, that is, unloading-reloading path, damage evolution during cyclic loading, and crack surface contact and friction behavior. This paper addresses the critical views of these aspects. Before that, the formulation of cohesive zone model and identification of cohesive zone model parameters and its numerical implementation have been reviewed.

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“…As a result, residual stress relaxation (RSR) has received great attentions [16][17][18]. Kim [19] investigated the RSR and fatigue behavior of SP medium-carbon steel.…”

Section: Introductionmentioning

confidence: 99%

Effects of warm laser peening at elevated temperature on the low-cycle fatigue behavior of Ti6Al4V alloy

Zhou

Meng

Huang

et al. 2015

Materials Science and Engineering: A

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Prediction of fatigue crack growth and residual stress relaxations in shot-peened material

Cited by 24 publications

References 18 publications

Effects of Shot Peening on Fatigue Properties of Zr-based Amorphous Alloys Containing Ductile Crystalline Particles

Effects of Shot Peening on Fatigue Properties of Zr-based Amorphous Alloys Containing Ductile Crystalline Particles

The Cohesive Zone Model for Fatigue Crack Growth

Effects of warm laser peening at elevated temperature on the low-cycle fatigue behavior of Ti6Al4V alloy

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