Ti Alloy with Enhanced Machinability in UAT Turning

Maurotto, Agostino; Siemers, Carsten; Muhammad, Riaz; Roy, Anish

doi:10.1007/s11661-014-2236-y

Cited by 12 publications

(8 citation statements)

References 31 publications

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“…Several attempts were made for the titanium and its alloy machinability enhancement, either by improving the characteristics of the alloy or by improving the cutting process. Improving the machining properties of the alloy without degradation of its desirable mechanical properties is challenging as minute changes in the chemical composition have large effects [6][7][8]. Several efforts have been exercised to shrink the propensity of the alloy for Table 2 Feed-speed-depth of cuts used in experimental tests and simulations [25] continuous chips by doping of different alloying elements which should decrease adhesion between chip segments, resulting in discontinuous chips.…”

Section: Introductionmentioning

confidence: 99%

Hybrid machining process: experimental and numerical analysis of hot ultrasonically assisted turning

Muhammad

Ahmed

Ullah

et al. 2018

Int J Adv Manuf Technol

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A hybrid turning is presented for turning of Ti-15V-3 Al-3 Cr-3 Sn alloy. In this technique, cutting insert is vibrated in velocity direction with the help of ultrasonic transducer and external heat is provided to the machined workpiece to gain collective benefits of both arrangements in cutting of hard-to-cut alloys. The studied alloy was investigated numerically and experimentally using hybrid turning process to determine its rewards in decline of measured cutting forces and enhancement in quality of machined surface. The assessment for thermal evolution in the cutting process was carried out both numerically and experimentally, and an accurate prediction of process zone temperatures is achieved. A significant improvement in dry turning of the studied alloy was achieved in terms of substantial decline in cutting forces and no substantial alterations in the metallurgy of the tested material. An elastoplastic thermo-mechanically coupled finite-element model for oblique-turning process is established to investigate the effect of heat and vibration on output parameters numerically. The developed model was used to explore the influence of selected machining parameters (depth-of-cut, feed rate, cutting speed, and tool nose radius) on three components of forces, stresses, and process zone temperature. Comparative case studies were executed with the developed models of conventional-turning, hot-conventional-turning, and hybrid turning and were confirmed by the outputs from tests carried out on the in house prototype available at Loughborough University, United Kingdom. The model was used for two-dimensional ultrasonic vibration in all three axis and resulted no significant drop in the cutting forces when compared to the studied hybrid turning process.

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Section: Introductionmentioning

confidence: 99%

Hybrid machining process: experimental and numerical analysis of hot ultrasonically assisted turning

Muhammad

Ahmed

Ullah

et al. 2018

Int J Adv Manuf Technol

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“…The machinability of -Ti-alloys is characterised by high level of cutting forces and extreme temperature at the process zone in machining processes due to its low thermal-conductivity and high-strength [1][2][3][4]. The produced plastic deformation in -Ti-alloys in Ultrasonically Assisted Turning (UAT) and Conventional Turning (CT) results in the high level of temperature, strain rate, and strain in the process zone.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Behaviour of β-Ti-15333 in Ultrasonically Assisted Turning: Experimental and Numerical Analysis

Muhammad

Ahmed

Ullah³

et al. 2017

Scientia Iranica

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Abstract. The enhanced strength, fatigue life, and corrosion resistance properties of Tialloys have attracted many industries for their utilization in various components exposed to extreme operating conditions. The machining of these alloys using conventional machining techniques is one of the main challenges in its wide application in many components, and there is an obvious demand to analyse the materials' response to these alloys in machining processes by developing simulation-based models. The materials' behaviour used in simulation of machining processes is usually determined by means of Split-HopkinsonPressure-Bar (SHPB) setup. A 3D thermo-mechanically coupled Finite-Element (FE) model of SHPB is developed in the current work to analyse materials response of -Ti-15333 at the selected temperature, strain rate, and strain. The obtained materials' response to the tested alloys is used in 3D thermo-mechanically coupled FE model of ultrasonically assisted turning and conventional turning at various tested cutting conditions. The developed FE model is used for parametric analysis of -Ti-15333 machining, and the obtained FE results are in good agreement with experimental results.

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“…Subsequently consistent reductions of regenerative chatter were observed with large improvements of the surface of finished work-pieces [13,14]. A significant impact on surface residual stresses was also observed in hard or difficult-to-machine alloys in a wide range of cutting conditions in oblique and orthogonal turning [15,16].…”

Section: Introductionmentioning

confidence: 52%

Experimental investigations on effects of frequency in ultrasonically-assisted end-milling of AISI 316L: A feasibility study

Maurotto

Wickramarachchi

2016

Ultrasonics

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Article available under the terms of the CC-BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/) eprints@whiterose.ac.uk https://eprints.whiterose.ac.uk/ Reuse Unless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request.Experimental investigations on effects of frequency in ultrasonically-assisted end-milling of AISI 316L: a feasibility study.A. Abstract:The effects of frequency in ultrasonic vibration assisted milling (UVAM) with axial vibration of the cutter is investigated in this paper. A series of face-mill experiment in dry conditions were conducted on AISI 316L, an alloy of widespread use in industry. The finished surfaces roughness were studied along with basic considerations on tool wear for both conventional milling and an array of frequencies for UVAM in a wide range of cutting conditions. Surface residual stresses and cross-cut metallographic slides were used to investigate the hidden effects of UVAM.Experimental results showed competitive results for both surface roughness and residual stress in UVAM when compared with conventional milling especially in the low range of frequency with similar trend for tool wear.

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Ti Alloy with Enhanced Machinability in UAT Turning

Cited by 12 publications

References 31 publications

Hybrid machining process: experimental and numerical analysis of hot ultrasonically assisted turning

Hybrid machining process: experimental and numerical analysis of hot ultrasonically assisted turning

Dynamic Behaviour of β-Ti-15333 in Ultrasonically Assisted Turning: Experimental and Numerical Analysis

Experimental investigations on effects of frequency in ultrasonically-assisted end-milling of AISI 316L: A feasibility study

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