Abstract
Burnishing is considered a super finishing process able to drastically increase surface quality in terms of hardness and roughness of the manufactured parts. Consequently, it is considered appealing for the performance enhancement of products where the surface quality plays a crucial role. However, when burnishing grade 5 titanium alloy, a quantitative relationship between process parameters and surface integrity is still missing. This work provides a deep analysis of the burnishing parameters and their influence on the surface integrity of Ti-6Al-4V. In particular, starting from a large experimental campaign, statistical analysis of the results is performed and models able to describe the surface integrity response based on different burnishing parameters are presented. The overall results allow us to clearly define the relationship within the input and output variables identifying, by the proposed models, different operational windows for surface integrity improvement.
Highlights
IntroductionPerformance enhancement of the component in service (i.e., fatigue and corrosion resistance, surface microhardness and roughness) is strictly related to the high-quality surface finishing
Performance enhancement of the component in service is strictly related to the high-quality surface finishing
ThisThis paper presents a deep study of the of burnishing process parameters on the paper presents a deep study of influence the influence of burnishing process parameters on surface the integrity ofintegrity
Summary
Performance enhancement of the component in service (i.e., fatigue and corrosion resistance, surface microhardness and roughness) is strictly related to the high-quality surface finishing. This aspect influences the behavior and functional properties of the produced components: stiffness, wear, lubrication, fatigue, etc. Several studies have been conducted to investigate the effects of different process parameters (feed, speed, tool geometry and material, etc.) and lubri-coolant conditions [1,2,3] on the surface aspect during severe plastic deformation processes and burnishing [4,5,6,7,8,9,10,11,12,13,14]. Revankar et al [15] investigated the influence of burnishing speed and feed on surface roughness and hardness, during the burnishing of titanium alloy (Ti–6Al–4V).
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