Investigations of ultrasonic frequency effects on surface deformation in rotary ultrasonic roller burnishing Ti-6Al-4V

Zhao, Jinshan; Wang, Qingqing

doi:10.1016/j.matdes.2016.06.024

Cited by 38 publications

(9 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This is caused by the fact that aluminum is softer than steel, and presents a lower self-hardening coefficient, thus deriving in higher cold work deformation, although a lower burnishing force is applied. Furthermore, as surface deformation is performed by the successive burnishing passes, self-hardening caused by one of them Residual stress as a function of depth for aluminum sample #4 and compared with the results of X-ray measurements shown in Travieso-Rodríguez et al [13] and Gómez-Gras [41].…”

Section: Resultsmentioning

confidence: 99%

“…Recent studies introduce the assistance of vibrations in the process, revealing a relevant improvement of results. Zhao et al [13] applied ultrasonic multi-roller burnishing on Ti-6Al-4V specimens, observing a decrease of the material flow stress, which in turn allows lower forces to be applied to achieve the same cold work deformation and residual stresses. Travieso-Rodriguez et al [14] concluded that a ball-burnishing process assisted by a 2-kHz vibration allows one to achieve similar results in one pass, as opposed to five passes of the conventional process.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ball-burnishing effect on deep residual stress on AISI 1038 and AA2017-T4

García-Granada

Gómez-Gras

Jerez-Mesa

et al. 2017

Materials and Manufacturing Processes

View full text Add to dashboard Cite

Ball-burnishing induces compressive residual stresses on treated materials by the effect of plastic deformation. The result is an increase in the fatigue life of the treated part, retarding the initiation of cracks on the surface. Compressive residual stresses have been previously measured by X-ray diffraction near the surface, revealing considerably high values at the maximum analyzed depth, in relation to other finishing processes such as shot peening. However, the maximum analyzed depth is very limited by using this technique. In this paper, the incremental hole drilling (IHD) technique is tested to measure residual stresses, being able to reach a 2-mm measuring depth. To that objective, a commercial strain gage is used and calibrated using finite element model simulations. A second Finite Element Model based on material removal rate is developed to obtain the equations to calculate the strain release through IHD. Finally, residual stresses are measured experimentally with that technique on two different materials, confirming that ball-burnishing increases the compressive residual stresses in layers up to 0.5¿mm deep for the testing conditions, which is a good response to industrial needs. The method proves to be suitable, simple and inexpensive way to measure the value of these tensions.Preprin

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ball-burnishing effect on deep residual stress on AISI 1038 and AA2017-T4

García-Granada

Gómez-Gras

Jerez-Mesa

et al. 2017

Materials and Manufacturing Processes

View full text Add to dashboard Cite

show abstract

“…The nanoscopical level also shows information about how the material at the surface is modified after VABB. It has been found that the process succeeds in refining the grain structure at the subsurface on many alloys such as aluminum 6061 [17] or AISI 1045 [18], and is even able to promote the phase transformation in materials such as Ti-6Al-4V [19], or austenitic metastable AISI 306 [15] (by forcing the generation of martensite by cold plastic strain) [20]. This translates into a higher residual hardening and stress.…”

Section: Effects Of Vabb On Materialsmentioning

confidence: 99%

Vibration-Assisted Ball Burnishing

2021

View full text Add to dashboard Cite

Vibration-Assisted Ball Burnishing is a finishing processed based on plastic deformation by means of a preloaded ball on a certain surface that rolls over it following a certain trajectory previously programmed while vibrating vertically. The dynamics of the process are based on the activation of the acoustoplastic effect on the material by means of the vibratory signal transmitted through the material lattice as a consequence of the mentioned oscillation of the ball. Materials processed by VABB show a modified surface in terms of topology distribution and scale, superior if compared to the results of the non-assisted process. Subgrain formation one of the main drivers that explain the change in hardness and residual stress resulting from the process.

show abstract

“…Bu sayede işlenmiş yüzeydeki çıkıntılar ezilmekte ve girintiler de dışa doğru çıkmaktadır [10]. Böylece parça yüzeyi daha pürüzsüz hale gelirken yüzeyde deformasyon oluşmakta ve malzemenin yüzey sertliğinin artmasıyla birlikte aşınma ve yorulma direnci de iyileşmektedir [11,12 ].…”

Section: Gi̇ri̇ş (Introduction)unclassified

Al 6013 ve MS 58 malzemelere delik içi ezerek parlatma işlemi uygulanmasıyla yüzeysel özelliklerin iyileştirilmesi

Koçak¹

2020

Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım Ve Teknoloji

View full text Add to dashboard Cite

In this study, ball burnishing processes of the holes drilled in Al 6013 and MS 58 materials were investigated. In the tests, three different deformation portion (0.03-0.06-0.09) were left for both materials. After ball burnishing process, the samples were examined for surface roughness, micro hardness and microstructure. Figure A. Ball burnishing process and surface roughness measurementPurpose: In this study, it is aimed to improve the surface properties of the holes drilled in Al 6013 and MS 58 materials. For this, the ball burnishing process was applied to the inside of the hole. Thanks to this method, besides improving the surface properties, increasing the surface hardness is another purpose.Theory and Methods: After drilling, the hole enlargement process was applied to the samples. Hole sizes were obtained in three different diameters (Ø a: 7.86-7.80-7.74 mm) depending on the ball diameter used in process. Ball made of bearing steel with a diameter of 7.92 mm was used in the ball burnishing process. The process was done on a lathe to forward the ball linearly along the hole axis. The inside of the hole is oiled to minimize friction and facilitate plastic deformation. Ball burnishing process was applied to the holes. The roughness of the hole surfaces was measured after the specimens were cut. Average surface roughness value was found by measuring from three different regions. After the sanding and polishing process was applied to the samples, microstructure images were taken and micro hardness measurement was made.Results: Thanks to the ball burnishing process applied to the Al 6013 material, the surface roughness value (in the sample A1 with 0.03mm deformation portion) decreased from 1.42 µm to 0.12 µm. It was observed that the surface roughness value of 1.65 µm measured before the process decreased to 0.17 µm in the MS 58 sample. It has been determined that the micro hardness of the Al 6013 material is 129 HV and the hardness increases to 142 HV in the area close to the hole surface. It was observed that the hardness of MS 58 material, which was 150 HV at a distance of 300 µm, was 180 HV in the region close to the hole surface. Conclusion:It has been determined that the roughness of the hole surfaces is considerably reduced by ball burnishing process and polishing the holes in both materials. Thanks to this process, the surface roughness of the Al 6013 material decreased by 91.5% and for the MS 58 material by 89.6%. In the zone where plastic deformation occurred, 10% hardness increase was achieved for Al 6013 material and 20% hardness increase was achieved for MS 58 material. Considering the grain structure and hardness increase relationship, it has been found that the small grain structure enables higher surface hardness to be obtained.

show abstract

Investigations of ultrasonic frequency effects on surface deformation in rotary ultrasonic roller burnishing Ti-6Al-4V

Cited by 38 publications

References 19 publications

Ball-burnishing effect on deep residual stress on AISI 1038 and AA2017-T4

Ball-burnishing effect on deep residual stress on AISI 1038 and AA2017-T4

Vibration-Assisted Ball Burnishing

Al 6013 ve MS 58 malzemelere delik içi ezerek parlatma işlemi uygulanmasıyla yüzeysel özelliklerin iyileştirilmesi

Contact Info

Product

Resources

About