The Characteristics of Titanium Alloy Chip-Breaking by Orthogonal Cutting with a Surface-Textured Cutting Tool

Abstract:

A comparative experimental study on the orthogonal cutting of titanium alloys by a polished tool, a tool containing a chip breaker groove, and a surface-textured tool was performed. The effects of different cutting tools on chip morphology, chip thickness, length and width of crack defects inside the chip, saw-teeth of the chip, and chip curl radius were analyzed during the cutting of a titanium alloy. Compared to chips formed by other tools, curled chip fragments formed by the surface-textured tool exhibited greater thickness and longer crack defect depths but smaller chip tooth pitches and curvature radii. The microstructural mechanisms involved in the interaction between the micro-texture surface cutting tool and the chips were analyzed by evaluating the cutting and texture parameters. The chip-breaking mechanism is that the micro-texture on the tool surface creates a sticky texture, leading to the micro-cutting and wrenching of chips, thereby increasing the magnitude of the tools work-hardening and chip-breaking effects.

• Periodical: Applied Mechanics and Materials (Volumes 365-366)
• Pages: 1235-1239
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.365-366.1235
• Online since: August 2013
• Authors: Jian Fu Zhang, Zhi Meng Chen, Ping Fa Feng, Wan Hong Xu
• Keywords: Chip Formation, Chip-Breaking, Cutting Tool, Surface Texture, Ti6A4V

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