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Chapter 2 Machinability of nickel-titanium (NiTi) shape memory alloys (SMAs): traditional machining process

  • Sedat Güven , Meltem Altin Karataş , Ali Riza Motorcu and Hasan Gökkaya
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Machining and Tribology of Advanced Materials
This chapter is in the book Machining and Tribology of Advanced Materials

Abstract

Nickel-titanium (NiTi) shape memory alloys (SMAs) are used in the robotics, aviation, medical, and aerospace industries because of their biocompatibility and smart material properties. NiTi alloys lose some functional properties when appropriate machining parameters are not selected due to their unidirectional and bidirectional shape memory effect (SME) and superelastic (SE) and superplastic nature. NiTi alloys are difficult to machine because of their deformation-hardening ability and high ductility. Therefore, the best machining procedure and machining parameters need to be determined. Owing to their affordability and accessibility to machining, it is still common to process NiTi alloys, which have very low machinability rates, with traditional manufacturing methods. NiTi alloys maintain the desired surface properties during machining because of their high strength and low thermal conductivity, but further research and improvements are needed to minimize cutting tool wear. This section discusses traditional methods of machining NiTi alloys, and a comprehensive analysis of turning, milling, and drilling processes is performed. The effects of cutting tool geometry and coatings, machining parameters, cooling environments, and other machining variables on surface roughness and integrity, tool life and wear, cutting force, and torque in machining NiTi SMAs with different traditional methods have been evaluated in detail. The quality characteristics/responses, such as surface roughness, torque, tool wear, vibration, hardness, and cutting force, of NiTi alloys during and after machining operations have been comprehensively studied and interpreted. This chapter provides important technical information on the machinability of NiTi SMAs, an increasingly used material, that will support and guide academic research and commercial and industrial applications.

Abstract

Nickel-titanium (NiTi) shape memory alloys (SMAs) are used in the robotics, aviation, medical, and aerospace industries because of their biocompatibility and smart material properties. NiTi alloys lose some functional properties when appropriate machining parameters are not selected due to their unidirectional and bidirectional shape memory effect (SME) and superelastic (SE) and superplastic nature. NiTi alloys are difficult to machine because of their deformation-hardening ability and high ductility. Therefore, the best machining procedure and machining parameters need to be determined. Owing to their affordability and accessibility to machining, it is still common to process NiTi alloys, which have very low machinability rates, with traditional manufacturing methods. NiTi alloys maintain the desired surface properties during machining because of their high strength and low thermal conductivity, but further research and improvements are needed to minimize cutting tool wear. This section discusses traditional methods of machining NiTi alloys, and a comprehensive analysis of turning, milling, and drilling processes is performed. The effects of cutting tool geometry and coatings, machining parameters, cooling environments, and other machining variables on surface roughness and integrity, tool life and wear, cutting force, and torque in machining NiTi SMAs with different traditional methods have been evaluated in detail. The quality characteristics/responses, such as surface roughness, torque, tool wear, vibration, hardness, and cutting force, of NiTi alloys during and after machining operations have been comprehensively studied and interpreted. This chapter provides important technical information on the machinability of NiTi SMAs, an increasingly used material, that will support and guide academic research and commercial and industrial applications.

Chapters in this book

  1. Frontmatter I
  2. Preface V
  3. Contents VII
  4. List of contributing authors IX
  5. Biography XIII
  6. Chapter 1 Machining strategies and processes for advanced materials 1
  7. Chapter 2 Machinability of nickel-titanium (NiTi) shape memory alloys (SMAs): traditional machining process 21
  8. Chapter 3 Thermal analysis of jute/kenaf/kevlar hybridfilled UHMWPE composite-based tibial spacer using ANSYS-22R1 for total knee replacement 39
  9. Chapter 4 Industry 4.0 and digital manufacturing 57
  10. Chapter 5 Metal additive manufacturing: revolutionizing production in the digital age 91
  11. Chapter 6 Enhancing the tribological properties of surfaces through various surface modification and coating techniques 107
  12. Chapter 7 Nanoengineered metal oxide additives as tribological performance modifiers 125
  13. Chapter 8 Recent developments to improve wear resistance of biomaterials 139
  14. Chapter 9 Meniscus for knee osteoarthritis: a journey of its development 155
  15. Chapter 10 Performance of composite box girder bridge under Indian earthquakes 179
  16. Chapter 11 Enhancing wear performance of reinforced UHMWPE composites: a comprehensive exploration 197
  17. Chapter 12 Tribological behavior of advanced materials 223
  18. Index 239
https://doi.org/10.1515/9783111377292-002

Chapters in this book

  1. Frontmatter I
  2. Preface V
  3. Contents VII
  4. List of contributing authors IX
  5. Biography XIII
  6. Chapter 1 Machining strategies and processes for advanced materials 1
  7. Chapter 2 Machinability of nickel-titanium (NiTi) shape memory alloys (SMAs): traditional machining process 21
  8. Chapter 3 Thermal analysis of jute/kenaf/kevlar hybridfilled UHMWPE composite-based tibial spacer using ANSYS-22R1 for total knee replacement 39
  9. Chapter 4 Industry 4.0 and digital manufacturing 57
  10. Chapter 5 Metal additive manufacturing: revolutionizing production in the digital age 91
  11. Chapter 6 Enhancing the tribological properties of surfaces through various surface modification and coating techniques 107
  12. Chapter 7 Nanoengineered metal oxide additives as tribological performance modifiers 125
  13. Chapter 8 Recent developments to improve wear resistance of biomaterials 139
  14. Chapter 9 Meniscus for knee osteoarthritis: a journey of its development 155
  15. Chapter 10 Performance of composite box girder bridge under Indian earthquakes 179
  16. Chapter 11 Enhancing wear performance of reinforced UHMWPE composites: a comprehensive exploration 197
  17. Chapter 12 Tribological behavior of advanced materials 223
  18. Index 239
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