Improving fatigue performance of Ti-6Al-4V alloy via ultrasonic surface rolling process

Liu, Chengsong; Liu, Daoxin; Zhang, Xiaohua; Liú, Dan; Ma, Amin; Ao, Ni; Xu, Xingchen

doi:10.1016/j.jmst.2019.03.036

Cited by 102 publications

(16 citation statements)

References 49 publications

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“…As austenite in 316L stainless is metastable, they further elucidate that the deformation-induced martensite (DIM) in cyclic strain plays an important role in the enhanced fatigue strength in a straincontrolled fatigue regime because formation of DIM during cyclic strain brings about distant second hardening and strain homogeneity, so as to improve the fatigue strength and endurance [9,12]. However, some researchers use an ultrasonic surface rolling process to produce the gradient nanostructured surface layer on Ti-6Al-4V alloy and found a significant improvement in fatigue performance; the authors consider that the main reason is because of the compressive residual stress-although the GNS layer and surface work hardening also contribute to enhancement in the fatigue strength [13].…”

Section: Introductionmentioning

confidence: 99%

Contribution to Improvement of Fatigue Properties of Zr-4 Alloy: Gradient Nanostructured Surface Layer versus Compressive Residual Stress

et al. 2021

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The gradient nanostructured (GNS) layer forms beneath the surface of Zr-4 samples by the surface mechanical grinding treatment (SMGT) process, which increases the fatigue strength apparently due to the synergistic effect of the gradient nanostructured layer and compressive residual stress. The SMGTed Zr-4 samples are subjected to annealing to remove residual stress (A-SMGT) and the individual effect of the GNS layer and compressive residual stress can be clarified. The results show that the gradient nanostructure in the surface is stable after annealing at 400 °C for 2 h but residual stress is apparently removed. Both SMGTed and A-SMGTed Zr-4 samples exhibit higher fatigue strength than that of coarse-grained (CG) Zr-4 alloy. The fatigue fracture of Zr-4 alloy indicates that the hard GNS surface layer hinders fatigue cracks from approaching the surface and leads to a lower fatigue striation space than that of CG Zr-4 samples. The offset fatigue strength of 106 cycles is taken for SMRT-ed, A-SMRT-ed, and CG Zr-4 samples and the results indicate clearly that the GNS surface layer is a key factor for the improvement of fatigue strength of the Zr-4 alloy with surface mechanical grinding treatment.

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Section: Introductionmentioning

confidence: 99%

Contribution to Improvement of Fatigue Properties of Zr-4 Alloy: Gradient Nanostructured Surface Layer versus Compressive Residual Stress

et al. 2021

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“…In the case of USRP-15, the decrease in fatigue strength can be attributed to the formation of α precipitates, which can increase the localized stress of continual fatigue loads, thus resulting in early crack initiation. Liu et al [74] conducted USRP on Ti6Al4V and revealed enhancement in fatigue performance. The authors observed a GNS layer of 10 µm which contains equiaxed grains.…”

Section: Effect Of Usrp On Mechanical and Tribological Properties Of Engineering Materialsmentioning

confidence: 99%

Ultrasonic Surface Rolling Process: Properties, Characterization, and Applications

et al. 2021

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Ultrasonic surface rolling process (USRP) is a novel surface severe plastic deformation (SPD) method that integrates ultrasonic impact peening (UIP) and deep rolling (DR) to enhance the surface integrity and surface mechanical properties of engineering materials. USRP can induce gradient nanostructured surface (GNS) layers on the substrate, providing superior mechanical properties, thus preventing premature material failure. Herein, a comprehensive overview of current-state-of-the art USRP is provided. More specifically, the effect of the USRP on a broad range of materials exclusively used for aerospace, automotive, nuclear, and chemical industries is explained. Furthermore, the effect of USRP on different mechanical properties, such as hardness, tensile, fatigue, wear resistance, residual stress, corrosion resistance, and surface roughness are summarized. In addition, the effect of USRP on grain refinement and the formation of gradient microstructure is discussed. Finally, this study elucidates the application and recent advances of the USRP process.

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“…Yang et al 17 found that the roughness of the GH4169 superalloy surface was significantly reduced and the microhardness of the surface was increased by the ultrasonic surface rolling. Zhang et al 18 used Ti-6Al-4V as a research object, obtained gradient nanostructure by ultrasonic rolling and introduced high residual compressive stress. Li et al 15 analyzed the friction and wear properties of Ti-6Al-4V surface under different parameters of USRP, and found that the friction coefficient and wear amount decreased significantly.…”

Section: Introductionmentioning

confidence: 99%

Research on surface properties of Ti-6Al-4V alloy by multi-ultrasonic rolling

Wang

Pan

Liu

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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The main purpose of this paper was to investigate the effect of the multiple ultrasonic surface rolling process (USRP) on the surface mechanical properties and wear mechanism of Ti-6Al-4V. Firstly, X-ray diffraction (XRD) microscopic analysis, work hardening and residual stress were used to measure and characterize the surface performance by USRP. The friction coefficient and wear morphology were obtained by the scanning electron microscope (SEM), three-dimension (3D) white light interferometer and energy dispersive spectrometer (EDS). The results showed that the material surface mechanical properties was effectively improved by the USRP, and the surface grains were refined to form nanoscale. It also can be found that the wear resistance of the material surface was effected by the surface mechanical properties. With the increase of processing, the main wear mechanism changed from delamination-based oxidation wear to adhesive wear with the increase of processing.

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Improving fatigue performance of Ti-6Al-4V alloy via ultrasonic surface rolling process

Cited by 102 publications

References 49 publications

Contribution to Improvement of Fatigue Properties of Zr-4 Alloy: Gradient Nanostructured Surface Layer versus Compressive Residual Stress

Contribution to Improvement of Fatigue Properties of Zr-4 Alloy: Gradient Nanostructured Surface Layer versus Compressive Residual Stress

Ultrasonic Surface Rolling Process: Properties, Characterization, and Applications

Research on surface properties of Ti-6Al-4V alloy by multi-ultrasonic rolling

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