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Influence of the high speed milling process on the mechanical and microstrcutural properties of ultrafine grained (UFG) profiles produced by linear flow splitting

Abele, Eberhard and Müller, Clemens and Turan, Emrah and Niehuesbernd, Jörn and Bruder, Enrico and Falk, Florian (2015):
Influence of the high speed milling process on the mechanical and microstrcutural properties of ultrafine grained (UFG) profiles produced by linear flow splitting.
In: 12th High Speed Machining Conference 2015, Nanjing, China, September 18 – 20, 2015, [Conference or Workshop Item]

Abstract

In the present work the effects of milling parameters on the surface quality, microstructures and mechanical properties of machined parts having a UFG gradient microstructure are investigated. The effects of the cutting speed, the feed per tooth, the cutting tool geometry and the cooling strategy are shown. It has been found that the surface quality of machined grooves can be improved by increasing the cutting speed. However, cryogenic cooling with CO2 shows no significant improvement of the surface quality. Microstructure and hardness investigations revealed similar microstructure and hardness variations near the cutting edges for both utilized tool geometries. Cryogenic cooling has been found to decrease more far-ranging hardness reductions due to high process temperatures, especially in the UFG regions of the machined parts, whilst it cannot prevent the drop in hardness directly at the cutting edges.

Item Type: Conference or Workshop Item
Erschienen: 2015
Creators: Abele, Eberhard and Müller, Clemens and Turan, Emrah and Niehuesbernd, Jörn and Bruder, Enrico and Falk, Florian
Title: Influence of the high speed milling process on the mechanical and microstrcutural properties of ultrafine grained (UFG) profiles produced by linear flow splitting
Language: English
Abstract:

In the present work the effects of milling parameters on the surface quality, microstructures and mechanical properties of machined parts having a UFG gradient microstructure are investigated. The effects of the cutting speed, the feed per tooth, the cutting tool geometry and the cooling strategy are shown. It has been found that the surface quality of machined grooves can be improved by increasing the cutting speed. However, cryogenic cooling with CO2 shows no significant improvement of the surface quality. Microstructure and hardness investigations revealed similar microstructure and hardness variations near the cutting edges for both utilized tool geometries. Cryogenic cooling has been found to decrease more far-ranging hardness reductions due to high process temperatures, especially in the UFG regions of the machined parts, whilst it cannot prevent the drop in hardness directly at the cutting edges.

Uncontrolled Keywords: high speed milling, ultrafine grained microstructure, linear flow splitting, hardness
Divisions: 11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Physical Metallurgy
16 Department of Mechanical Engineering
16 Department of Mechanical Engineering > Institute of Production Management, Technology and Machine Tools (PTW)
16 Department of Mechanical Engineering > Institute of Production Management, Technology and Machine Tools (PTW) > Machining Technology
DFG-Collaborative Research Centres (incl. Transregio)
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 666: Integral Sheet Metal Design with Higher Order Bifurcations
11 Department of Materials and Earth Sciences
Event Title: 12th High Speed Machining Conference 2015, Nanjing, China, September 18 – 20, 2015
Date Deposited: 19 Nov 2015 14:17
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