Study on Dimensional Inconsistency of Titanium Alloy (Grade 5) During Machining
Authors
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Department of Mechanical Engineering, M S Ramaiah Institute of Technology, Bangalore ,IN
Nishanth R. A. -
Department of Mechanical Engineering, M S Ramaiah Institute of Technology, Bangalore ,INMohandas K. N.
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Department of Mechanical Engineering, M S Ramaiah Institute of Technology, Bangalore ,INC. M. Ramesha
DOI:
https://doi.org/10.18311/jmmf/2023/33363Abstract
Machining is the process of removing material from a work piece, in the form of chips, to obtain the final part in its desired shape and size. Various aerospace materials such as aluminum, steel, and titanium etc. can be mainly shaped through machining process. Titanium alloys also find larger adoption in areas like bio-medical and automotive mainly because of their inherent high specific strength and consistent corrosion resistance. Machining Ti-6Al-4V-grade 5 has been difficult due to a number of its characteristics like poor conductivity of heat, strong and undesirable chemical reactivity with cutting tool materials at operating/ cutting temperature, its work hardening characteristics and very low modulus of elasticity. Due to low modulus of elasticity, the dimensional inconsistency of thin-walled titanium grade 5 parts that occur after machining is an important topic/issue to be addressed since it has greater effect on the work piece surface quality, cutting tool wear and the cutting forces involved. While milling the thin-walled parts numerous cutting parameters like cutting speed, feed rate, depth of cut, cutting tool materials and cutting fluids were used and the resulting output variables like cutting force, surface finish and the change in flatness levels were observed and discussed.
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