Study on Surface Integrity and Fatigue Properties of TC4 Titanium Alloy by Surface Ultrasonic Rolling

Zhu, Xiaotong; Liu, Pengtao; Zhang, Chi; Liang, H.; Hua, Jing

doi:10.3390/ma16020485

Cited by 11 publications

(3 citation statements)

References 18 publications

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“…Different USRP process parameters have different effects on the integrity of the sample surface. Hu et al [24] carried out USRP experiment on 60Si2CrVAT steel, and found that with the static pressure increased, the residual compressive stress firstly increased and then decreased, the hardness continued to increase. As rotate speed and feed rate increased, the hardness and residual compressive stress decreased, while the surface roughness increased.…”

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

“…The residual stress anisotropy has also been found in LSP, DR, and USRP [22, 23,24]. The residual stress anisotropy in LSP was further studied [22].…”

Section: Introductionmentioning

confidence: 99%

Precisely tuning the residual stress anisotropy in machine hammer peening

Liu,

Jin,

Shen

2023

Int J Adv Manuf Technol

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Machine hammer peening (MHP) is a novel surface modification process that can strengthen and smoothen the treated parts in one process, significantly improving their fatigue performance. The strengthening effect is mainly due to the induced highly controllable residual compressive stress on the subsurface. However, the residual compressive stress induced by MHP is usually anisotropic, with the component perpendicular to the feed direction more significant than parallel.The anisotropic residual stress will have an adverse effect if the treated parts are subjected to multiaxial loads, which puts forward high demands to precisely tune such anisotropy. For this purpose, a finite element model with a velocity-based driving mode is first established in this paper, which can simulate the residual stress induced by MHP. The origin of the anisotropy is then revealed by analyzing the evolution of the simulated residual stress. Based on this, methods to precisely tune the residual stress anisotropy are proposed. The residual stress anisotropy can be precisely tuned by optimizing MHP parameters, including the overlap ratio, impact velocity, and MHP path.

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“…Many studies have shown the relationship between surface roughness and the fatigue life of titanium alloys. Xiaotong Zhu et al [7] studied the effect of the surface ultrasonic rolling process on the surface roughness and fatigue properties of TC4 titanium alloy. The test parameters are a vibration frequency of 29 kHz, a current of 1 A, an amplitude of 0.007-0.008 mm, and a rolling ball diameter of 14 mm.…”

Section: Introductionmentioning

confidence: 99%

Research on Surface Integrity and Fatigue Properties in the Turning of TC17 Titanium Alloy Based on the Response Surface Method

Lai,

Wang,

Wang

et al. 2023

Materials

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Titanium alloy parts are more and more widely used in the field of aerospace. In order to improve the service life of titanium alloy parts, the response surface method was used to study surface residual stress and roughness under different turning parameters. In addition, a mathematical model was established through multiple linear regression to determine the relationship between surface integrity parameters and fatigue life. The test results indicate that the turning parameters have an effect on surface residual stress in the order of feed rate > depth of cut > cutting speed and on surface roughness in the order of feed rate > cutting speed > depth of cut. The analysis results of surface integrity show that the residual compressive stress on the surface has the greatest impact on fatigue life, followed by surface roughness. The fatigue life increases with the increase in residual compressive stress and decreases linearly with the increase in surface roughness. The feed rate has a significant impact on residual stress and surface roughness. Therefore, under the experimental conditions of this paper, the appropriate feed rate can be selected to ensure that the Ra < 2 μm and a large residual compressive stress is obtained.

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Study on Surface Integrity and Fatigue Properties of TC4 Titanium Alloy by Surface Ultrasonic Rolling

Cited by 11 publications

References 18 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

Precisely tuning the residual stress anisotropy in machine hammer peening

Research on Surface Integrity and Fatigue Properties in the Turning of TC17 Titanium Alloy Based on the Response Surface Method

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