Journal
TRIBOLOGY INTERNATIONAL
Volume 176, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2022.107776
Keywords
Tool wear mechanism (Al2O3-ZrO2) ceramic insert; Tool wear mechanism; Surface roughness; Titanium alloy
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In dry machining of titanium alloys, the cutting speed, depth of cut, and feed rate have significant effects on surface roughness and tool wear mechanism.
Titanium alloys in dry machining interacts with cutting tool, resulting in rapid tool wear, and poor surface quality. A highly chemically stable Al2O3-ZrO2 ceramic insert was used to examine the effect of cutting speed, depth of cut, and feed rate, on performance measures of surface roughness, and tool wear mechanism. The result shows that the primary tool wear mechanism is abrasion and chipping when cutting speed and depth of cut both at low level, while diffusion at the crater, resulting formation of built-up-edge leads to catastrophic tool fracture at high level of cutting speed and depth of cut. The surface roughness is enhanced by 69.6% when cutting speed is at high level and depth of cut at low level.
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