Microstructural evolution and surface integrity of ultrasonic surface rolling in Ti6Al4V alloy

Luo, Xian; Xue-ping, Ren; Jin, Qi; Qu, Haitao; Hou, Hongliang

doi:10.1016/j.jmrt.2021.05.065

Cited by 46 publications

(9 citation statements)

References 42 publications

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“…The authors observed that more than 89 % of the grains on the surface were in the size of 1.46 µm. Luo et al [58] have explored the effect of multiple USRP processing stages on the microstructural evolution and surface integrity of Ti6Al4V alloy. The authors adopted an ultrasonic vibration frequency of 28 kHz, an amplitude of 5 µm, a static load of 800 N, and they varied processing stages as 1, 2, 4, 8, 12, and 16.…”

Section: Ti Alloysmentioning

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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Section: Ti Alloysmentioning

confidence: 99%

Ultrasonic Surface Rolling Process: Properties, Characterization, and Applications

et al. 2021

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“…Surface strengthening techniques reduce surface roughness, thus inhibiting crack generation and controlling the surface microstructure 15 . On the one hand, the surface strengthening technique introduces a gradient residual compressive stress field on the material surface, which inhibits or slows down the sprouting of fatigue cracks.…”

Section: Introductionmentioning

confidence: 99%

Surface Microstructure Refinement and Mechanical Properties of GCr15 Steels Improved During Ultrasonic Surface Rolling Processing

Xue

et al. 2023

Mat. Res.

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In this paper, ultrasonic surface rolling processing (USRP) was used to strengthen GCr15-bearing steel. A finite element three-dimensional model of USRP was established to analyze the residual compressive stress and equivalent plastic strain distribution on the bearing steel surface. The microstructure, hardness, surface roughness, and corrosion resistance before and after USRP treatment were characterized by SEM, EBSD, X-ray diffraction (XRD), and electrochemical techniques. Results indicated that USRP treatment can significantly improve the material's surface microstructure and residual compressive stress distribution and obtain a plastic strain layer of about 60μm. After USRP treatment, the Kernel Average Misorientation (KAM) increased, and the dislocation activity was more intensive, resulting in aggregation near grain boundaries, and the percentage of LAGBs increased to 38.8%. Under the combined effect of surface grain refinement, residual compressive stress, and high glossy surface, the self-corrosion current density is reduced by two orders of magnitude, and the corrosion resistance is significantly improved. This investigation suggests a solution to the bearing failure problem and has implications for understanding the deformation mechanism of ultrasonic surface rolling processing.

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“…Zheng et al 16 established the residual stress analysis model of 7075 aluminum alloy USRP, with the increase of amplitude, roller radius and static pressure, the residual stress increased, which the calculated value of the analytical model was consistent with the experimental results. Luo et al 17 found that the depth of the plastic deformation layer of USRP-treated Ti-6Al-4 V alloys was 304.38 μm, and the increase of residual stress was caused by grain refinement and dislocation strengthening. Yang et al 18 found that excessive USRP will cause the internal grain size of GH4169 superalloy to increase from 58.23 to 280.7 nm, which reduces the residual stress and the wear resistance of GH4169 superalloy.…”

Section: Introductionmentioning

confidence: 99%

Study on surface residual stress of 42CrMo steel treated by ultrasonic rolling extrusion

Wang

Tian

et al. 2023

Sci Rep

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To obtain the distribution law of residual stress of 42CrMo steel processed by ultrasonic rolling extrusion process (UREP), according to the characteristics of the material treated by ultrasonic rolling extrusion process, 42CrMo steel quasi-static experiment and dynamic experiment are carried out, the improved Johnson–Cook model was proposed. Based on the 42CrMo constitutive equation, the ultrasonic rolling extrusion process finite element method and experiment of 42CrMo steel were carried out. The results show that the simulation value and experimental value of the residual stress distribution after ultrasonic rolling extrusion process of 42CrMo steel have good consistency, with the increase of static pressure and amplitude, the residual stress increases, and with the increase of rotational speed and feed speed, the residual stress decreases, a more accurate residual stress distribution law of ultrasonic rolling extrusion of 42CrMo steel is obtained.

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Microstructural evolution and surface integrity of ultrasonic surface rolling in Ti6Al4V alloy

Cited by 46 publications

References 42 publications

Ultrasonic Surface Rolling Process: Properties, Characterization, and Applications

Ultrasonic Surface Rolling Process: Properties, Characterization, and Applications

Surface Microstructure Refinement and Mechanical Properties of GCr15 Steels Improved During Ultrasonic Surface Rolling Processing

Study on surface residual stress of 42CrMo steel treated by ultrasonic rolling extrusion

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