Chip Formation and Phase Transformation in Orthogonal Machining of NiTi Shape Memory Alloy: Microstructure-based Modelling and Experimental Validation

KAYNAK Y., Manchiraju S., Jawahir I., Biermann D.

CIRP Annals, cilt.69, ss.85-88, 2020 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 69
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1016/j.cirp.2020.04.025
  • Dergi Adı: CIRP Annals
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, INSPEC
  • Sayfa Sayıları: ss.85-88
  • Anahtar Kelimeler: Machining, Phase Transformation, Modelling, SURFACE INTEGRITY, WORK, HEAT
  • Marmara Üniversitesi Adresli: Evet

Özet

Phase transformation and shape memory response of NiTi alloys are sensitive to the variation of temperature and stress. Thus, the phase transformation of NiTi alloys becomes more complex during machining process. This study presents findings from a major study involving modelling of machining-induced phase transformation of NiTi alloys performed by modifying Helmholtz free energy-based microstructure model. Orthogonal cutting tests were performed to validate the predicted outputs from the simulation, such as cutting forces, temperatures and chip morphology. This work provides a strong evidence that the developed new model can accurately predict the experimentally recorded outputs in machining of NiTi alloys. (C) 2020 Published by Elsevier Ltd on behalf of CIRP.