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Published in: The International Journal of Advanced Manufacturing Technology 5-6/2021

05-07-2021 | ORIGINAL ARTICLE

Investigation on machinability of NiTi shape memory alloys under different cooling conditions

Authors: Yanzhe Zhao, Kai Guo, Jianfeng Li, Jie Sun

Published in: The International Journal of Advanced Manufacturing Technology | Issue 5-6/2021

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Abstract

NiTi shape memory alloy products are becoming more and more popular in many areas. But owing to the unique characteristics of NiTi shape memory alloys, it is still considered restrictive by the traditional machining methods of producing NiTi shape memory alloys for finished products. Flood coolant and cryogenic with liquid nitrogen (LN2)–assisted machining is desired to improve machinability of material in the turning procedure. Experiments were conducted to examine the influence of cooling conditions (dry, flood, and cryogenic LN2) on turning NiTi shape memory alloys at different cutting speeds. Tool wear, cutting force, and surface integrity were selected as evaluation characteristics to explore the effects of different cooling methods and the stress-induced martensitic phase during the turning process. The study shows that the appearance of the stress-induced martensitic phase during the turning process harms the machinability of NiTi shape memory alloys. Flood conditions accomplish lower tool wear and cutting force at 15 m/min. Cryogenic conditions achieve higher machinability at 125 m/min.

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Metadata
Title
Investigation on machinability of NiTi shape memory alloys under different cooling conditions
Authors
Yanzhe Zhao
Kai Guo
Jianfeng Li
Jie Sun
Publication date
05-07-2021
Publisher
Springer London
Published in
The International Journal of Advanced Manufacturing Technology / Issue 5-6/2021
Print ISSN: 0268-3768
Electronic ISSN: 1433-3015
DOI
https://doi.org/10.1007/s00170-021-07563-9

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