An investigation on the optimum machinability of NiTi based shape memory alloy

Mehrshad Mehrpouya, Abed Moheb Shahedin, Sarmad Daood Salman Dawood, Ahmad Kamal Ariffin Mohd Ihsan

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

In the present work, the machinability of nickel–titanium (Nitinol) shape memory alloy has been discussed. Nitinol is known as a difficult-to-machine alloy due to its high hardness, which requires a large amount of cutting force, resulting in high rate of tool wearing. Therefore, researchers have made an effort to ameliorate the machinability of this material to achieve a finer surface quality. The previous studies found that the cutting speed will remarkably influence the surface properties of machined nickel–titanium alloy in turning process. Tool wear and cutting force are at minimum values in a particular range of cutting speeds so that it leads to diminishing machining barriers such as burr formation and chip-breaking. Lower cutting force and consequently lower temperature and stresses in the machining process improve the mechanical properties as well as reducing hardness, distortion, and residual stress. The machining process was optimized by applying a numerical approach through ANSYS/LS-DYNA R15 software. The obtained results demonstrated the optimum cutting speed in the machining process, which are in good agreement with experiments.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalMaterials and Manufacturing Processes
DOIs
Publication statusAccepted/In press - 16 Feb 2017

Fingerprint

Machinability
Shape memory effect
Machining
Surface properties
Hardness
Residual stresses
Wear of materials
Mechanical properties
Experiments

Keywords

  • FEM
  • machinability
  • modeling
  • NiTi
  • Nitinol
  • SMAs

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

Cite this

An investigation on the optimum machinability of NiTi based shape memory alloy. / Mehrpouya, Mehrshad; Shahedin, Abed Moheb; Daood Salman Dawood, Sarmad; Mohd Ihsan, Ahmad Kamal Ariffin.

In: Materials and Manufacturing Processes, 16.02.2017, p. 1-8.

Research output: Contribution to journalArticle

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