Chips of Ti-6Al-2Sn-4Zr-6Mo Alloy – A Detailed Geometry Study

Titanium alloys like Ti-6Al-2Sn-4Zr-6Mo (Ti- 6246) are widely used in aerospace applications. Component manufacturing, however, is difficult and expensive as their machinability is extremely poor. A thorough understanding of the chip formation process is needed to improve related metal cutting operations.In the current study, orthogonal cutting experiments have been performed and theresulting chips were analyzed by optical microscopy and scanning electron microscopy.Chips from aTi- 6246ingot were produced at different cutting speeds and cutting depths. During the experiments, depending of the cutting conditions, continuous or segmented chips were formed. Narrow, highly deformed and grain oriented zones, the so-called shear zone, separated individual segments. Different material properties have been measured in the shear zones and the segments.

Authors:

• Dmytro Ostroushko
• Karel Saksl
• Carsten Siemers
• Zuzana Rihova

Keywords:

• Titanium alloy
• Ti-6246
• chip formation
• machining
• shear zone
• microstructure

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