A review of ultrasonic peening treatment

Malaki, Massoud; Ding, Hongtao

doi:10.1016/j.matdes.2015.08.102

Cited by 162 publications

(57 citation statements)

References 101 publications

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“…Since the application of ultrasonic vibration into the tension test of single crystal zinc by Blaha and Langenecker in 1955 [1], vibration assisted forming has been studied extensively due to its advantages of reducing flow stress [2], lowering friction between die-specimen interface [3], and improving surface finish [4], especially in the field of micro forming [5][6][7]. By applying ultrasonic vibration (or high-frequency vibration) during the deformation processes for the metallic materials, significant progress has been achieved in contrast with traditional processes [2].…”

Section: Introductionmentioning

confidence: 99%

Acoustic softening and stress superposition in ultrasonic vibration assisted uniaxial tension of copper foil: Experiments and modeling

et al. 2016

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Ultrasonic vibration is widely utilized in manufacturing processes mainly because acoustic field could significantly affect the metal plasticity leading to stress reduction. However, viewpoints on the influence mechanism have not reached a consensus yet. In this paper, an ultrasonic vibration assisted uniaxial tension experiment with copper foils is carried out using a specially-developed device. The results show that the extent of stress reduction increases with the increase of the vibration amplitude. Acoustic softening and stress superposition are both considered in a developed model to describe the stress reduction due to ultrasonic excitation during metal forming process. Considering ultrasonic vibration provides the energy for dislocation sliding, acoustic softening is analyzed based on crystal plasticity theory considering ultrasonic intensity. Stress superposition, mostly induced by the additional periodic strain, is included by taking account of its proportional relationship with vibration amplitude. The calculation results from the numerical model show a good agreement with those from the experiment. These findings provide an instructive understanding of mechanism of stress reduction in ultrasonic vibration assisted metal deformation and is especially helpful for pro-actively designing ultrasonic vibration assisted metal forming processes.

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Section: Introductionmentioning

confidence: 99%

Acoustic softening and stress superposition in ultrasonic vibration assisted uniaxial tension of copper foil: Experiments and modeling

et al. 2016

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“…It might distribute at some local area, where the local tensile stress will be enlarged if the load is applied, and influence the local stress condition near weld toe unfavorably [15,16]. Moreover, the microweld defects will also be introduced, which makes the local stress condition much worse.…”

Section: Residual Stress Measurementmentioning

confidence: 99%

Local stress variation in welded joints by ICR treatment

Yuanzhou

et al. 2016

Journal of Constructional Steel Research

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“…Arakawa et al [12] studied the effect of USP on the fatigue characteristics of high strength structural materials of hydroelectric facilities, and the results showed that the fatigue limit of the treated material was approximately increased by 60%. For the high strength materials, the higher compressive residual stress can be formed and maintained after surface strengthening treatment, and the fatigue properties can be better improved [13,14]. As to low strength materials (magnesium or aluminum alloy), the lower compressive residual stress induced by surface strengthening treatment is easily relaxed at the moment a random or occasional high load appears, which will result in a limited improvement of fatigue properties.…”

Section: Introductionmentioning

confidence: 99%

Surface Characteristics and Fatigue Behavior of Gradient Nano-Structured Magnesium Alloy

Zhao

Zhang

Liu

2017

Metals

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High-frequency impacting and rolling was applied on AZ31B magnesium alloy to obtain a gradient nano-structured surface. Surface characteristics were experimentally investigated, and the nanocrystallization mechanism is discussed in detail. Results showed that the gradient nano-structure with the characteristics of work hardening, compressive residual stress and a smooth surface was induced on the treated surface. Grains on the top surface were generally refined to around 20 nm. Twins, dislocations and dynamic recrystallization dominated the grain refinement process. Fatigue strength of the treated specimens corresponding to 10 7 cycles was increased by 28.6% compared to that of the as-received specimens. The work hardened layer induced by high-frequency impacting and rolling is the major reason to improve fatigue life.

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A review of ultrasonic peening treatment

Cited by 162 publications

References 101 publications

Acoustic softening and stress superposition in ultrasonic vibration assisted uniaxial tension of copper foil: Experiments and modeling

Acoustic softening and stress superposition in ultrasonic vibration assisted uniaxial tension of copper foil: Experiments and modeling

Local stress variation in welded joints by ICR treatment

Surface Characteristics and Fatigue Behavior of Gradient Nano-Structured Magnesium Alloy

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