No full-text available
To read the full-text of this research,
you can request a copy directly from the authors.
Effect of Roller Burnishing on Surface Properties of Wrought AA6063 Aluminium Alloys
... The problem of the burnishing of the soft materials in the literature has been extensively described for both steel [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] and other materials [21][22][23][24][25][26][27][28][29][30][31][32][33]. This applied both rolling [3,4,6] and sliding [2,10,14] burnishing. ...
... In the presented articles can be found research results that are not sufficiently explained based on the methods used. For example, the article [29] noted that the material from the surface as a result of burnishing was pressed into the surface layer of the part thus the authors explain it by the displacement of the material as a result of shear instability, while it is not excluded that this may be the result of the phenomena that occur in the wave before the tool. ...
During the low plasticity burnishing process of soft materials such as carbon steel with a hardness of up to 40 HRC (Rockwell grade) a raised structure of the material known as the Jumping Wave forms in front of the tool roll. This phenomenon significantly disturbs the burnishing process, but is very poorly described in the literature. This article presents studies of this phenomenon on the example of burnished 1.0562 steel. The research concerns the changes in the surface structure of the processed material as well as changes in the structure of the material during this process. The research shows changes in the geometric structure of the surface made in the 3D system and their parametric description. Moreover, the work presents an analysis of the metallographic structure in the tool zone. The research showed occurrence of material slippages in the wave in front of the tool, which creates an additional structure on the surface. These tests make it possible to better understand the process of changes that take place in the surface layer of the processed element in the low plasticity burnishing process.
... Belirli kuvvetlerin etkisinde kalan iş parçasının mikroyapısında meydana gelen dislokasyon yoğunluğu deformasyon sertleşmesinin oluşmasına ve deformasyon sertleşmesi sonucunda bu sert katmanların oluştuğu bilinmektedir. Deformasyon sertleşmesi sonrasında daha ince formların oluştuğu görülmektedir [13]. Şekil 4 ise ezme uygulamasından sonra numunelerin yüzey pürüzlülük grafiklerini göstermektedir. ...
... In the case of roller burnishing one or more rollers are used to plastify and form the surface layer of the element. Prasad et al. [16] investigated the effects of roller burnishing on the surface properties of wrought aluminum alloys AA6063. From their work, it can be seen that roller burnishing process caused an increase in hardness and a decrease in surface roughness. ...
The purpose of this work was to study the effect of roller burnishing process on tribological properties of 36CrNiMo4 steel. The experiments were performed under dry and starved lubrication contact conditions. The influence of selected parameters such as applied load, sliding speed, and sliding distance on the coefficient of friction and wear volume was investigated. The Taguchi technique was used to estimate the parameters significantly affecting the tribological properties. The levels of tested input factors were as follows: applied load—5, 10, and 15 N, sliding speed—0.24, 0.48, and 0.72 m/s, and sliding distance—160, 282, and 404 m. The results revealed that load was the most dominating factor that affects the wear volume and the coefficient of friction. The influence of other input factors was smaller. Regression analysis was also performed to predict tribological behavior. The results demonstrated good agreement between experimental and predicted results. The worn-out samples were analyzed using SEM to reveal the wear mechanism.
... Press rolling is a normal reforming technique for metal processing [19][20][21]. By applying an external force on the metal surface, press rolling can crush and refine the grains, as well as increase the grain boundaries' proportion and the hardness of the metal [22,23]. ...
Polyethylene oxide (PEO)-based solid polymer electrolyte (SPE) is considered to have great application prospects in all-solid-state li-ion batteries. However, the application of PEO-based SPEs is hindered by the relatively low ionic conductivity, which strongly depends on its crystallinity and density of grain boundaries. In this work, a simple and effective press-rolling method is applied to reduce the crystallinity of PEO-based SPEs for the first time. With the rolled PEO-based SPE, the LiFePO4/SPE/Li all-solid li-ion battery delivers a superior rechargeable specific capacity of 162.6 mAh g-1 with a discharge-charge voltage gap of 60 mV at a current density of 0.2 C with a much lower capacity decay rate. The improvement of electrochemical properties can be attributed to the press-rolling method, leading to a doubling conductivity and reduced activation energy compared with that of electrolyte prepared by traditional cast method. The present work provides an effective and easy-to-use grain reforming method for SPE, worthy of future application.
... [15] Press rolling is a normal reforming technique for metal processing. [16][17][18] By applying an external force on the metal surface, press rolling can crush and refine the grains, as well as increase the grain boundaries proportion and the hardness of the metal. [19,20] Because of its simple process, low cost, high efficiency and obvious grain refinement effect, press rolling method is widely used for fabricating large bulk sheet or plate samples. ...
Polyethylene oxide (PEO)-based solid polymer electrolyte (SPE) is considered to have great application prospects in all-solid-state li-ion batteries. However, the application of PEO-based SPEs is hindered by the relatively low ionic conductivity, which strongly depends on its crystallinity and density of grain boundaries. In this work, a simple and effective press rolling method is applied to reduce the crystallinity of PEO-based SPEs for the first time. With the rolled PEO-based SPE, the LiFePO4/SPE/Li all-solid li-ion battery delivers a superior rechargeable specific capacity of 162.6 mAh g-1 with a discharge-charge voltage gap of 60 mV at a current density of 0.2 C with a much lower capacity decay rate. The improvement of electrochemical properties can be attributed to the press rolling method, leading to a doubling conductivity and reduced activation energy compared with that of electrolyte prepared by traditional cast method. The present work provides an effective and easy-to-use grain reforming method for SPE, worthy of future application.
... Aluminium and their alloys are widely used by the industry in large quantities because of low density and good mechanical properties [26]. Its burnished surfaces are better according to tribological aspects [27] and harder [28] in case of aluminium, too. As other non-ferrous materials, the aluminium is also burnishable, Adel M. Hassan [29] and M.H. El-Axir et al. [30] explained the effects of ball burnishing of aluminium alloy. ...
The burnishing process is applied to improve the surface roughness and hardness. The goal of the reported research was to evaluate the machining conditions on magnetisable and non-magnetisable materials by the novel permanent magnetic assisted ball burnishing (MABB) tool. The MABB tool was designed to reduce the surface roughness but this process has further effects on the surface C45 steel, X6CrNiTi1811 austenite steel, AA7075 aluminium alloy and PA6 polymer materials were burnished in the experiments. Surface quality is a complex feature that refers to the micro-geometrical characteristics of the machined surface. It includes roughness and waviness and gives a realistic picture about the top layer of the surface, while micro hardness and grains structure are especially important on sub-surface level. Results according to these analysed aspects mirrored that all of the tested materials can be burnished by the novel MABB tool, however, the effects from the economical viewpoints are diverse.
Corrosion resistance of materials is predominately dependent on their surface roughness. Therefore, surface finishing techniques can effectively improve the corrosion resistance of the components. Ultrasonic-assisted burnishing (UAB) process is a newly developed surface finishing technique capable of flattening the surface of components without material removal. This research experimentally investigated the effects of amplitude in the UAB process on surface roughness and corrosion performance of AA7075-T6 aluminum alloys. Turned sample (control) was treated by conventional burnishing (CB), followed by UAB with an amplitude of 10, 20, and 30 µm. Then, the surface roughness, microstructure, microhardness, and corrosion resistance of the treated samples were assessed. The surface roughness showed an improvement upon burnishing of the samples, where the best surface was achieved by UAB with an amplitude of 10 µm. UAB process also led to grain refinement such that finer grains could be achieved by increasing the amplitude. Microhardness also increased after the UAB process which got intensified by increasing the amplitude. The turned sample showed the least corrosion resistance, while the UAB-treated specimens (amplitude of 10 µm) exhibited minimal corrosion rate. Furthermore, the enhancement of UAB amplitude increased the surface roughness, causing a decline in corrosion resistance.
ResearchGate has not been able to resolve any references for this publication.