Prediction of Surface Integrity Parameters in Roller Burnishing of Ti6Al4V

Rotella, Giovanna; Caruso, Serafino; Prete, Antonio Del; Filice, Luigino

doi:10.3390/met10121671

Cited by 12 publications

(15 citation statements)

References 29 publications

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“…An overlap is created between the working surface of the tool and the surface of the workpiece to be formed, and thus the tensile residual stress in the post-cutting surface zone is converted to a favourable compressive residual stress. This is one of the most advantageous properties of this process as, in addition to hardening, it also contributes to increasing the lifetime of the machine element, since it improves the resistance of the material to fatigue [14][15][16][17][18][19][20][21][22]. This paper deals with the examination of these two characteristics: surface micro-hardness and residual stress.…”

Section: Applications Of Burnishing On External Cylindrical Surfacementioning

confidence: 99%

Investigation of the Effect of Surface Burnishing on Stress Condition and Hardening Phenomena

2022

Teh. vjesn.

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The purpose of this paper is to present a comprehensive study of the stress state and hardening characteristics of low-alloyed aluminium cylindrical specimens subjected to the diamond burnishing process. Diamond burnishing has a surface hardening effect on structural steels. In the present study, our aim was to check whether this surface hardening effect is also observed for other (less hard) material grades, such as low-alloy aluminium. We also aimed to determine the technological parameters at which the greatest relative increase in hardness can be achieved by burnishing. In addition to the hardness test, the changes in the residual stress state due to burnishing were also analysed. Both hardness and residual stress tests were performed in two variants. Of the 4 technological parameters (burnishing speed, feed, burnishing force and number of passes), the burnishing speed was set to constant for one variant and number of passes was set to constant at the other variant, while two levels were chosen for the other parameters. A special formula was developed to determine the relative improvement in residual stress and hardness. Our experiments were performed using a full factorial experimental design. The results show that diamond burnishing has surface hardening effect and increases of residual stress on an aluminium alloy when applying adequate technological parameters.

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Section: Applications Of Burnishing On External Cylindrical Surfacementioning

confidence: 99%

Investigation of the Effect of Surface Burnishing on Stress Condition and Hardening Phenomena

2022

Teh. vjesn.

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“…Burnishing studies of wrought titanium alloys showed that beyond machining parameters also lubricants may have significant effect to surface hardness, wear resistance and fatigue [15,16], roller burnishing experiments of Ti4Al4V show that significant improvement of surface roughness and hardness can be achieved even in cryogenic conditions [17].…”

Section: Introductionmentioning

confidence: 99%

Surface Hardness Modification of Selective Laser Melted Ti6Al4V Parts by Sliding Friction Diamond Burnishing

Dezső

Szigeti

Varga

2023

Period. Polytech. Mech. Eng.

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Selective laser melting (SLM) is a frequently used additive manufacturing technology for creating metallic, especially Ti6Al4V parts. After the production by SLM usually postprocessing is necessary for several reasons. Here the sliding friction diamond burnishing is applied as postprocessing procedure.In this paper an experimental study of surface hardness improvement of selective laser melted Ti6Al4V ELI cylindrical parts is demonstrated. The surface is modified by sliding friction diamond burnishing as postprocessing machining. The design of experiment method was applied to investigate effect of five factors (two SLM and three machining parameters) on surface hardness modification.It is shown that both SLM and postprocessing factors makes significant effect to the surface hardness improvement, most important ones are laser power, laser scan speed during manufacturing, and the burnishing force as factor of postprocessing. Empirical formulas are fit to measurement data, and visualized by surface plots. Relationship between factors and the surface hardness improvement is strongly nonlinear. In the investigated parameter window burnishing force has always positive effect to surface hardness improvement.Electron microscopic investigations show that change in surface hardness can be related to four main morphological changes: compression of the surface by plastic deformation of protrusions, attenuation of valleys, formation of inner cavities and creation of small protrusions by diamond tool. This paper is an extended paper of a conference paper published in the proceedings book of the XXXI. International Welding Conference (Kecskemét, Hungary).

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“…Rotella et al 19 conducted a study to analyze the effects of process parameters on surface roughness, surface hardness, and wear rate of Ti-6Al-4V alloy in the roller burnishing method. The study involved a thorough statistical analysis.…”

Section: Introductionmentioning

confidence: 99%

Effect of roller burnishing on the mechanical behavior and surface quality of Ti6Al4V alloy

Çelik

2023

Proceedings of the Institution of Mechanical Engineers, Part E:

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A low-cost and effective surface treatment technique that has gained popularity recently is roller burnishing. In this procedure, the rolling element is forced against the surface with a specified amount of force, which results in small plastic deformations that reduce surface roughness without removing chips from the surfaces. The method results in a considerable decrease in surface roughness while the material's surface hardness rises. The effects of roller burnishing process parameters (burnishing pressure, number of passes, and feed rate) on Ti6Al4V tensile strength and surface roughness were investigated experimentally in this study. In the study, the burnishing procedure was carried out via a specifically created disc-shaped equipment using the Taguchi L16 experimental design approach. The study's findings showed that the roller burnishing technique improved the Ti6Al4V alloy's surface quality, microhardness and ultimate tensile strength. It was shown that roller burnishing increased the surface roughness, microhardness and ultimate tensile strength by 64%, 16,25%, and 94%, respectively.

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Prediction of Surface Integrity Parameters in Roller Burnishing of Ti6Al4V

Cited by 12 publications

References 29 publications

Investigation of the Effect of Surface Burnishing on Stress Condition and Hardening Phenomena

Investigation of the Effect of Surface Burnishing on Stress Condition and Hardening Phenomena

Surface Hardness Modification of Selective Laser Melted Ti6Al4V Parts by Sliding Friction Diamond Burnishing

Effect of roller burnishing on the mechanical behavior and surface quality of Ti6Al4V alloy

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