Enhanced Surface Mechanical Properties and Microstructure Evolution of Commercial Pure Titanium Under Electropulsing-Assisted Ultrasonic Surface Rolling Process

Ye, Yong Da; Li, Xiao Pei; Sun, Zongzhao; Wang, Hai Bo; Tang, Guo

doi:10.1007/s40195-018-0738-0

Cited by 19 publications

(6 citation statements)

References 35 publications

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“…In recent decades, SPD has been proposed that can produce a certain depth of nanostructure layer on the surface of materials including surface mechanical attrition treatment (SMAT) [ 15 ], shot peening (SP) [ 16 ], equal channel angular pressing (ECAP) [ 17 ], ultrasonic impact (UI) [ 18 ] and ultrasonic surface rolling processing (USRP) [ 19 ]. According to the relevant research, SPD can enhance the surface microhardness and wear resistance of materials [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of Ultrasonic Surface Rolling Processing and Subsequent Recovery Treatment on the Wear Resistance of AZ91D Mg Alloy

et al. 2020

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AZ91D Mg alloy was treated by ultrasonic surface rolling processing (USRP) and subsequent recovery treatment at different temperatures. The dry sliding friction test was performed to investigate the effects of USRP and subsequent recovery treatment on the wear resistance of AZ91D Mg alloy by a ball-on-plate tribometer. The microstructure, properties of plastic deformation layer and worn morphology were observed by optical microscope (OM), scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD) analysis and microhardness tester. Results illustrate that the grains of AZ91D Mg alloy surface layer are refined to nanocrystallines. The maximum microhardness of the top surface of the USRP sample reaches 102.3 HV. When USRP samples are treated by recovery treatment at 150 °C, 200 °C and 250 °C, the microhardness of the top surface decreases to 90.68 HV, 79.29 HV and 75.06 HV, respectively. The friction coefficient (FC) and wear volume loss of the USRP-R-150 sample are the lowest among all the samples. The worn surface morphology of the USRP-R-150 sample is smoother than that of other samples, indicating that the wear resistance of AZ91D Mg alloy treated by USRP and recovery treatment at 150 °C is improved significantly.

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Section: Introductionmentioning

confidence: 99%

Effects of Ultrasonic Surface Rolling Processing and Subsequent Recovery Treatment on the Wear Resistance of AZ91D Mg Alloy

et al. 2020

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“…One of the MSE methods, deep cold rolling (DCR), is getting attention nowadays as it is a fast, chipless, and economical surface enhancement method applicable to prevailing conventional or computer numerical control (CNC) machine tools. Further producing a deep layer of compression and nanocrystalline microstructure on the surface of samples, it also can lessen the surface roughness of materials and enhance the fatigue life of engineering components without affecting their bulk properties (Ref [22][23][24][25][26][27][28][29][30][31][32][33][34]. There are numerous parameters to be considered, and the effects of each of these parameters are dependent on other variables.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, improving the surface properties of machine components that work under fatigue and corrosion is an effective way to enhance the service life of the components. Although surface alteration by application of the deep-cold-rolling process is quite new, it has received substantial demand due to enhanced residual compressive stress (Ref 29,45) , surface work hardening (Ref 28,46) , surface finish (Ref 18,47) and grain refinement which in turn will have the positive effect on corrosion properties. Therefore, a surface enhancement method improving the surface properties after the machining would be beneficial along with the effective use of the design of experiment to reduce the time and number of experiments to be conducted.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, a surface enhancement method improving the surface properties after the machining would be beneficial along with the effective use of the design of experiment to reduce the time and number of experiments to be conducted. Based on the above literature analysis, it is clear that the effects of deep-cold-rolling process parameters on the surface integrity of titanium alloys, magnesium alloys, and hardened steel have been explored (Ref 4,23,28,34,45,48,49). However, the literature on the effects of various deep rolling parameters on the surface integrity of AISI 4140 steel is limited (Ref 49,50).…”

Section: Introductionmentioning

confidence: 99%

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Surface Properties and Corrosion Behavior of Turn-Assisted Deep-Cold-Rolled AISI 4140 Steel

Prabhu

Sharma

et al. 2020

J. of Materi Eng and Perform

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In this research, the effect of various turn-assisted deep-cold-rolling process parameters on the residual stress, microstructure, surface hardness, surface finish, and corrosion behavior of AISI 4140 steel has been investigated. The examination of the surface morphology of the turned and processed samples was performed by using a scanning electron microscope, energy-dispersive spectroscopy, and atomic force microscopy. Response surface methodology and desirability function approach were used for reducing the number of experiments and finding local optimized conditions for parameters under the study. The results from the residual stress measurements indicate that the rolling force has the highest effect by generating a deeper layer of residual compressive stress. The outcomes of surface hardness and surface finish emphasize that rolling force and number of tool passes are the most significant parameters affecting the responses. Surface studies confirmed the corrosion and its intensity onto the metal surface, and according to atomic force microscopy studies, the surface had become remarkably rough after exposure to the corrosive medium. Improvements in surface microhardness from 225 to 305.8 HV, the surface finish from 4.84 down to 0.261 μm, and corrosion rate from 6.672 down to 3.516 mpy are observed for a specific set of parameters by turn-assisted deep-cold-rolling process. The multiresponse optimization for surface finish and corrosion rate together shows that a ball diameter of 10 mm, a rolling force of 325.75 N, initial roughness of 4.84 µm, and number of tool passes of 3 give better values for the two responses under consideration with composite desirability of 0.9939. Based on the experimental work at the optimum parameter setting, the absolute average error between the experimental and predicted values for the corrosion rate is calculated as 3.2%.

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“…Researchers attempted to elevate the strength of CP Ti through the other two strengthening mechanisms, namely dislocation strengthening mechanism and interfacial strengthening mechanism [4][5][6][7][8][9][10]. Severe plastic deformation techniques, for example ECAP (equal-channel angular pressing), HPT (high-pressure torsion), ARB (accumulative roll bonding) and MDF (multi-directional forging), can achieve the above two strengthening effects simultaneously [11].…”

Section: Introductionmentioning

confidence: 99%

Texture Evolution Behavior and Its Triggered Mechanical Anisotropy of CP Ti During Severe Cold Rolling and Subsequent Annealing

Shi

Cao

Fan

et al. 2020

Acta Metall. Sin. (Engl. Lett.)

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The texture evolution behavior and its triggered mechanical anisotropy of commercially pure titanium (CP Ti) during severe cold rolling and subsequent annealing are discussed based on the optical microscopy and the electron backscattered diffraction analyses. Some enlightening results are found. It is shown that planar textures exist under all treatments, namely the {11-29}<10-10> under rolling state, the {11-27}<10-10> under 300 °C annealing state and the {11-24}<10-10> under 500 °C annealing state. This indicates that the crystal plane indices of planar texture change toward {− 12-10} with increasing annealing temperature, which is a result of crystal lattice rotation. Planar texture triggers anisotropy of the mechanical properties for CP Ti sheets under all treatments. In particular, CP Ti sheets exhibit severe and similar anisotropy behavior under rolling and 300 °C annealing states. Generally speaking, the rolling direction (RD) specimens get relatively low yield strength, high ultimate tensile strength and good plasticity, and RD + 45° specimens show relatively high yield strength, low ultimate tensile strength and good plasticity. The transverse direction specimens, however, usually exhibit high yield strength and low plasticity. It is proved that the above anisotropy behavior is mainly determined by the Schmid factor distribution of the (10-10) [11][12][13][14][15][16][17][18][19][20] prismatic slip system in different directions. Due to the non-negligible influence exerted by the (0001) [11][12][13][14][15][16][17][18][19][20] basal slip system after 500 °C annealing, the anisotropy behavior under this state is obviously different.

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Enhanced Surface Mechanical Properties and Microstructure Evolution of Commercial Pure Titanium Under Electropulsing-Assisted Ultrasonic Surface Rolling Process

Cited by 19 publications

References 35 publications

Effects of Ultrasonic Surface Rolling Processing and Subsequent Recovery Treatment on the Wear Resistance of AZ91D Mg Alloy

Effects of Ultrasonic Surface Rolling Processing and Subsequent Recovery Treatment on the Wear Resistance of AZ91D Mg Alloy

Surface Properties and Corrosion Behavior of Turn-Assisted Deep-Cold-Rolled AISI 4140 Steel

Texture Evolution Behavior and Its Triggered Mechanical Anisotropy of CP Ti During Severe Cold Rolling and Subsequent Annealing

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