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- Title
The influence of the process parameters on the surface integrity during peripheral milling of Ti-6Al-4V.
- Authors
Wimmer, Matthias; Shahul Hameed, Muhammed Zubair; Wölfle, Christoph; Weisbrodt, Vanessa; Zaeh, Michael Friedrich; Werner, Ewald; Krempaszky, Christian; Semm, Thomas
- Abstract
The titanium alloy Ti-6Al-4V represents a significant metal portion of state-of-the-art aircraft structural and engine components. When critical structural components in the aerospace industry are manufactured with the objective to reach high reliability levels, surface integrity is one of the most relevant parameters used for evaluating the quality of machined surfaces. The residual stresses and the surface alteration induced by machining titanium alloys are critical due to safety and sustainability issues. In this paper, a series of end milling experiments was conducted to comprehensively characterize the surface integrity at various milling conditions. The experimental results have shown that the surface roughness value increases with the feed and the cutting velocity. However, the residual stress state in the surface layer zone is influenced by the variation of the process control variables. Here, compressive residual stresses occur both in cutting and in feed direction. In addition, a new type of sensory tool holder is presented, which should enable the indirect measurement of residual stresses during the milling process.
- Subjects
TITANIUM alloys; RESIDUAL stresses; MILLING (Metalwork); INTEGRITY; SURFACE roughness; AIRPLANE motors; STRUCTURAL components
- Publication
Technisches Messen, 2020, Vol 87, Issue 11, p721
- ISSN
0171-8096
- Publication type
Article
- DOI
10.1515/teme-2020-0052