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

Mehrpouya, Mehrshad; Shahedin, Abed Moheb; Dawood, Sarmad Dawood Salman; Ariffin, Ahmad Kamal

doi:10.1080/10426914.2017.1279290

Cited by 46 publications

(16 citation statements)

References 42 publications

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“…The NiTi alloy is in martensitic phase at low temperatures and in the austenitic phase at high temperatures [4]. A review of the literature showed that different manufacturing processes are used for the machining of NiTi alloy such as laser processing method [5][6][7][8][9][10][11][12][13][14][15][16], electrical discharge machining (EDM) [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31], electrochemical polishing [32] and abrasive water jet processing method (AWJM) [33,34] for shaping NiTi alloy and also conventional machining methods (Turning [35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50], milling…”

Section: Introductionmentioning

confidence: 99%

Investigation Of The Effects Of Machining Parameters On Tool Life And Surface Roughness During The Face Milling Of The NiTi Shape Memory Alloy With Uncoated Tools

Altaş¹,

Gökkaya²,

Özkan³

2020

Preprint

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Shape memory alloys (SMAs) are increasingly used in the fields of aviation, automotive and biomedicine due to their unique properties. Nickel-Titanium (NiTi) alloy materials, which are one of the shape memory alloys, are among the most frequently used alloy materials. The shape memory and super elastic effects of NiTi alloys, high ductility and deformation hardening make it difficult to shape burr. An additional problem is the formation of a white layer during machining. In this study, surface milling operations were performed in dry cutting conditions with uncoated cutting tools with different nose radii. The processing parameters were determined based on the experience gained as a result of the preliminary tests. Tungsten carbide cutting tools with different nose radii (0.4mm and 0.8mm) were used for the milling operations. Milling was carried out at three different cutting speeds (20, 35, 50 m/min), feed rates (0.03, 0.07, 0.14 mm/tooth), and a constant axial cutting depth (0.7 mm). As a result of our experimental studies, the best tool life was found to be in 0.8 mm nose radius cutting tools at 20 m/min cutting speed and 0.03 mm/tooth feed rate (0.264 mm). The minimum average surface roughness was found after milling with 0.8 mm nose radius cutting tool at 20 m/min cutting speed and 0.03 mm/tooth feed rate (0.346 μm). It has been determined that increasing the cutting tool nose radius reduces both the flank wear over the cutting tool and the average surface roughness.

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Section: Introductionmentioning

confidence: 99%

Investigation Of The Effects Of Machining Parameters On Tool Life And Surface Roughness During The Face Milling Of The NiTi Shape Memory Alloy With Uncoated Tools

Altaş¹,

Gökkaya²,

Özkan³

2020

Preprint

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“…between finite element simulations with experimental data existed, which was a clear indication of a very good fit [16].…”

Section: Accepted Manuscriptmentioning

confidence: 69%

“…compared to that of the white subsurface layer (which was resulted from changes in the austenite phase of cubic hard and rigid geometry) [15]. In a recent reported literature, machinability of nickel-titanium (Nitinol) shape memory alloy was discussed in term of optimum cutting speed that led to the minimum Von Mises and shear stresses criteria [16]. ANSYS/LS-DYNA R15 was applied in the finite element simulation through the implementation of SOLID164 3D element.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Effects of minimal quantity lubricants reinforced with nano-particles on the performance of carbide drills for drilling nickel-titanium alloys

Rosnan

Murad

Azmi

et al. 2019

Tribology International

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“…In addition to these problems, NiTi is also a difficult material to process [6,10,15,19,25,[28][29][30]. Firstly, NiTi alloys are compositional sensitive.…”

Section: Introductionmentioning

confidence: 99%

“…Second, NiTi SMA is known to have a poor machinability associated with its unconventional deformation mechanisms (detwinning and stress-induced martensitic transformation) [10,15,19,25,29]. The shape memory properties of NiTi alloy cause a significant amount of tool wear and make it difficult for precise machining [5,6,10,15,28,30,31]. Thus, most of the conventionally-produced NiTi parts have simple geometries such as in the form of wires, plates, bars, tubes, etc., critically limiting the full potential applicability of NiTi [6,25,28,29,32].…”

Section: Introductionmentioning

confidence: 99%

3D printing of shape memory alloy based smart structures

Khoo¹

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the opportunity to work on this interesting and challenging project. Their invaluable advice and continuous support throughout the course of his research are appreciated. The author is honoured to have the chance to work and learn under the supervisions of both Professors. The author would also like to thank Dr An Jia for his guidance on the writing of thesis and publications. His insightful suggestions have helped to refine the research from various perspectives. The author is grateful to the FYP students,

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

Cited by 46 publications

References 42 publications

Investigation Of The Effects Of Machining Parameters On Tool Life And Surface Roughness During The Face Milling Of The NiTi Shape Memory Alloy With Uncoated Tools

Investigation Of The Effects Of Machining Parameters On Tool Life And Surface Roughness During The Face Milling Of The NiTi Shape Memory Alloy With Uncoated Tools

Effects of minimal quantity lubricants reinforced with nano-particles on the performance of carbide drills for drilling nickel-titanium alloys

3D printing of shape memory alloy based smart structures

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