Machining induced surface integrity in titanium and nickel alloys: A review

Ulutan, Durul; Özel, Tuğrul

doi:10.1016/j.ijmachtools.2010.11.003

Cited by 1,042 publications

(422 citation statements)

References 107 publications

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“…It is worth noticing that microhardness profiles measured for titanium-based alloys created by both turning and milling indicate a harder level on the surface of the machined material, which can lead to a work-hardening layer [3,21]. The extent of microhardness profiles for titanium alloys is comparable with the extent of defect profile for Ti reported in this paper.…”

Section: Results Of the Ppma Measurementssupporting

confidence: 80%

The Positron Probe Microanalyser Studies of Defect Distribution Induced by Machining of Copper, Iron and Titanium

et al. 2015

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We demonstrate the application of the new experimental technique: positron probe microanalyser for studies of the defect profiles induced by milling. Metal foils of Cu, Fe and Ti were subjected to machining in a milling machine with different cutting speed. This technique revealed well-defined profiles of defects below the machined surface which was extended up to hundreds of micrometres. The extent of the profile depended on the metal and the cutting speed. The positron probe microanalyser allowed us to trace the evolution of the profile after annealing in different temperatures. Surprisingly, the high thermal stability of a few tens of micrometres thick layer adjacent to the machined surface was detected.

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Section: Results Of the Ppma Measurementssupporting

confidence: 80%

The Positron Probe Microanalyser Studies of Defect Distribution Induced by Machining of Copper, Iron and Titanium

et al. 2015

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“…Surface quality may be considered to be one of the vital factors in metal cutting as it is directly related to a fatigue life for most materials (Ulutan and Ozel, 2011). In this paper, surface roughness analyses were carried out for both alloys in CT and UAT to investigate the effect of the hybrid machining technique on a finished surface.…”

Section: Surface Roughnessmentioning

confidence: 99%

Analysis of a free machining α+β titanium alloy using conventional and ultrasonically assisted turning

Muhammad

Hussain

Maurotto

et al. 2014

Journal of Materials Processing Technology

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• This is the author's version of a work that was accepted for publication in the Journal of Materials Processing Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication.A definitive version was subsequently pub- enhanced machinability generating short chips during metal cutting, which prevents entanglement with cutting tools improving productivity. To further enhance the machinability of this material, a novel hybrid machining technique called ultrasonically assisted turning (UAT) was used. Experimental investigations were carried out to study the machinability, chip shapes, cutting forces, temperature in the process zone and surface roughness for conventional and ultrasonically assisted turning of both alloys. UAT shows improved machinability with reduced nominal cutting forces, improved surface roughness of the machined workpiece and generation of shorter chips when compared to conventional machining conditions.

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“…Titanium alloys are widely used particularly in the aerospace and biomedical industry [1][2][3]. This state is affected by the large number of favourable properties of these alloys [4][5][6]: high strength-to-weight ratio, biocompatibility, high corrosion and creep resistance, and high strength at elevated temperatures.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of the grinding wheel with aggregates of grains in grinding of Ti-6Al-4V titanium alloy

Kacalak

Lipiński

Bałasz

et al. 2017

Int J Adv Manuf Technol

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The results of grinding are highly dependent on conditions of workpiece removal process. The material is removed by an unspecified number of abrasive grains of irregular shape and random distribution on the grinding wheel active surface. The interaction between the abrasive grain and the workpiece can be divided into three stages: (i) rubbing, (ii) ploughing and (iii) chip formation. Reciprocal contribution of each stage is dependent on the properties of the workpiece, the grinding parameters, the friction condition between the abrasive grain and the workpiece and the shape of the grains. In the article, the results of numerical and experimental process in the analysis of grinding of Ti-6Al-4V titanium alloy, using a conventional grinding wheel and a newly developed grinding wheel with aggregates of grains, were presented. The analysis of influence of the geometric parameters of the abrasive aggregates and the abrasive grains on the effectiveness of the workpiece removal process is presented. The effects of the geometrical parameters of grains and abrasive aggregates in direction of motion as well as in transversal direction on the size of ridges were determined. It has been observed that increase of the length of sideway material displacement results in the decrease of ridge formation. The results of a numerical analysis were confirmed by experimental research. The analysis of the impact of utilization of abrasive aggregates on the grinding forces, grinding-specific energy and surface roughness was performed. The impact of abrasive aggregates on the decrease of grinding forces and specific energy and the increase of quality of ground surface was observed.

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Machining induced surface integrity in titanium and nickel alloys: A review

Cited by 1,042 publications

References 107 publications

The Positron Probe Microanalyser Studies of Defect Distribution Induced by Machining of Copper, Iron and Titanium

The Positron Probe Microanalyser Studies of Defect Distribution Induced by Machining of Copper, Iron and Titanium

Analysis of a free machining α+β titanium alloy using conventional and ultrasonically assisted turning

Performance evaluation of the grinding wheel with aggregates of grains in grinding of Ti-6Al-4V titanium alloy

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