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

Wang, Pengcheng; Pan, Yongzhi; Liu, Yanjie; Fu, Xiuli; Li, Hongxia

doi:10.1177/0954406220984194

Cited by 9 publications

(2 citation statements)

References 31 publications

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“…The commonly methods of surface deformation strengthening are shot peening [6], laser shock strengthening [7], chemical heat treatment [8], rolling [9], ultrasonic rolling [10][11][12], etc. Among them, ultrasonic rolling combines the traditional rolling and ultrasonic vibration, which can improve the material microstructure, repair the disordered lattice arrangement, and realize the nanocrystallization of the surface metal, thus greatly extending the fatigue life of the metal workpiece [13].…”

Section: Introductionmentioning

confidence: 99%

Investigation on surface integrity and process parameters optimization of carburized 18CrNiMo7-6 steel by induction-heating assisted ultrasonic surface rolling process

Liu

Zheng²,

Tang³

et al. 2023

Preprint

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The effect of induction-heating assisted ultrasonic surface rolling process (IH-USRP) at different temperatures on the surface integrity of carburized 18CrNiMo7-6 steel was studied. The heating method is induction heating, and the heating temperature range is 100 °C ~ 300 °C. The residual stress, microhardness and surface topography of the modified layer on the sample surface were measured after ultrasonic surface rolling process (USRP). It was found that with the heating temperature increased, the residual compressive stress and the maximum residual compressive stress increased by 29% and 25.5% respectively, and the residual compressive stress depth also increased. The hardness affected layer increased from 1.5 mm to 1.8 mm, and the surface roughness decreased significantly. However, when the heating temperature is higher than the martensitic transformation temperature, the residual compressive stress and microhardness of the sample surface layer decreased, and the surface roughness increased. The process parameters of IH-USRP were optimized by grey correlation analysis method. The optimum process parameters to achieve the best surface integrity are static pressure 400 N, rotate speed 50 r/min, feed rate 0.04 mm/r and heating temperature 250 °C. The significant order of the effect on surface integrity are: static pressure > rotate speed > feed rate > heating temperature.

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Section: Introductionmentioning

confidence: 99%

Investigation on surface integrity and process parameters optimization of carburized 18CrNiMo7-6 steel by induction-heating assisted ultrasonic surface rolling process

Liu

Zheng²,

Tang³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Moreover, the effect of UIT may vary with materials and processing parameters since the UIT enable to change the main wear mechanism. For example, the main wear mechanism of Ti-6Al-4V changed from delamination-based oxidation wear to adhesive wear with the increase of ultrasonic surface rolling processing [15], According to [6], the improved wear resistance of Ti-6Al-4V alloy was attributed not only to the increased hardness and compressive residual stress, but also to the modified lubrication mechanism.…”

Section: Introductionmentioning

confidence: 99%

Transformations of the Microstructure and Phase Compositions of Titanium Alloys during Ultrasonic Impact Treatment Part III: Combination with Electrospark Alloying Applied to Additively Manufactured Ti-6Al-4V Titanium Alloy

Panin

Kazachenok

Круковский

et al. 2023

Metals

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Scanning electron microscopy, 3D optical surface profilometry, as well as X-ray diffraction and electron backscatter diffraction analysis were implemented for studying the effects of both ultrasonic impact treatment (UIT) and ultrasonic impact electrospark treatment (UIET) procedures on the microstructure, phase composition, as well as the mechanical and tribological properties of Ti-6Al-4V samples fabricated by wire-feed electron beam additive manufacturing. It was shown that he UIET procedure with the WC-6%Co striker enabled to deposit the ~10 µm thick coating, which consists of fine grains of both tungsten and titanium-tungsten carbides, as well as titanium oxide. For the UIET process, the effect of shielding gas on the studied parameters was demonstrated. It was found that the UIET procedure in argon resulted in the formation of a dense, continuous and thick (~20 µm) coating. After the UIET procedures in air and argon, the microhardness levels were 26 and 16 GPa, respectively. After tribological tests, wear track surfaces were examined on the as-built sample, as well as the ones subjected to the UIT and UIET procedures. It was shown that the coating formed during UIET in air had twice the wear resistance compared to the coating formed in argon. The evidence showed that the multiple impact of a WC-Co striker with simultaneous electrical discharges was an effective way to improve wear resistance of the Ti-6Al-4V sample.

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Theoretical calculation and experiment of the impact characteristics in the plane ultrasonic rolling

Lan

Bie

2022

Int J Adv Manuf Technol

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To achieve high machining e ciency in optimal surface integrity manufacturing, a relationship model between rolling depth and rolling force was established based on Hertz contact theory, and a theoretical model of impact characteristics was established according to the indentation geometry to evaluate the machining e ciency. Subsequently, the plane ultrasonic rolling experiment of 7075 aluminum alloy was carried out to verify the relationship between rolling depth and rolling force, meanwhile, the mapping between process parameters and surface characteristics, impact characteristics and surface morphology were studied, respectively. On this basis, the surface integrity prediction model was established by using nonlinear curve tting method, and the optimal parameter solution was obtained by using quantum genetic algorithm (NSGA-). The results show that the rolling force increases linearly with the increase in rolling depth. The impact characteristics increase with the increase in static force and amplitude, and decreases with the increase in step and feed rate, and the impact characteristics is negatively correlated with the processing e ciency. The optimization results provide a reference for engineering applications.

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

Cited by 9 publications

References 31 publications

Investigation on surface integrity and process parameters optimization of carburized 18CrNiMo7-6 steel by induction-heating assisted ultrasonic surface rolling process

Investigation on surface integrity and process parameters optimization of carburized 18CrNiMo7-6 steel by induction-heating assisted ultrasonic surface rolling process

Transformations of the Microstructure and Phase Compositions of Titanium Alloys during Ultrasonic Impact Treatment Part III: Combination with Electrospark Alloying Applied to Additively Manufactured Ti-6Al-4V Titanium Alloy

Theoretical calculation and experiment of the impact characteristics in the plane ultrasonic rolling

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