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Machinability Evaluation of Ti-5Nb-xFe Alloys for Dental Applications

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Abstract

In this study, we evaluated the machinability of a series of Ti-5Nb-xFe alloys with an Fe content ranging from 1 to 5 mass% and compared the results to those of commercially pure titanium (c.p. Ti) and Ti-6Al-4V. The alloys were slotted using a milling machine and end mills under four cutting conditions. Machinability was evaluated using cutting force which was measured using a dynamometer. The experimental results indicate that the addition of Fe significantly affected the machinability of the Ti alloys in terms of cutting force under the present cutting conditions. Under certain conditions, the cutting force of Ti-5Nb-4Fe was lower than that of c.p. Ti and Ti-6Al-4V, a result which can be explained by a higher degree of hardness and greater amounts of ω phase. Ti-5Nb-4Fe also had a better surface finish: cutting marks were less apparent and metal chips did not adhere to the cut surfaces under cutting condition C (cutting speed: 1.83 m/s, feed rate: 0.0005 m/s, and depth of cut: 0.0002 m). Ti-5Nb-4Fe had the lowest average surface roughness (R a) after machining (approximately 0.27 μm under cutting condition C).

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Acknowledgement

The authors acknowledge the partial financial support of Ministry of Science and Technology of Taiwan (NSC 97-2622-E-212-007-CC1; NSC 98-2622-E-212-001-CC1; NSC 99-2622-E-212-001-CC1).

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Authors and Affiliations

  1. Department of Dental Technology and Materials Science, Central Taiwan University of Science and Technology, Taichung, Taiwan, ROC

    Hsueh-Chuan Hsu, Shih-Ching Wu & Shih-Kuang Hsu

  2. Institute of Biomedical Engineering and Materials Science, Central Taiwan University of Science and Technology, Taichung, Taiwan, ROC

    Hsueh-Chuan Hsu, Shih-Ching Wu & Shih-Kuang Hsu

  3. Department of Mechanical and Automation Engineering, Da-Yeh University, Changhua, Taiwan, ROC

    Kuan-Huang Hsu

  4. Department of Chemical and Materials Engineering, National University of Kaohsiung, 811, Kaohsiung, Taiwan, ROC

    Wen-Fu Ho

  5. Department of Chemical and Materials Engineering, National University of Kaohsiung, 700 Kaohsiung University Rd., Nanzih District, Kaohsiung, 81148, Taiwan, ROC

    Wen-Fu Ho

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  1. Hsueh-Chuan Hsu
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Hsu, HC., Wu, SC., Hsu, SK. et al. Machinability Evaluation of Ti-5Nb-xFe Alloys for Dental Applications. J. of Materi Eng and Perform 24, 1332–1339 (2015). https://doi.org/10.1007/s11665-014-1375-z

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  • DOI: https://doi.org/10.1007/s11665-014-1375-z

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