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Influence of Tool Materials on Machinability of Titanium- and Nickel-Based Alloys: A Review
KTH, School of Industrial Engineering and Management (ITM), Production Engineering.
KTH, School of Industrial Engineering and Management (ITM), Production Engineering.ORCID iD: 0000-0002-5960-2159
KTH, School of Industrial Engineering and Management (ITM), Production Engineering.
2014 (English)In: Materials and Manufacturing Processes, ISSN 1042-6914, E-ISSN 1532-2475, Vol. 29, no 3, 219-252 p.Article in journal (Refereed) Published
Abstract [en]

Titanium and nickel alloys are the most commonly used in the demanding industries like aerospace, energy, petrochemical, and biomedical. These highly engineered alloys offer unique combination of heat resistance, corrosion resistance, toughness, high operating temperature, and strength-to-weight ratio. These alloys are termed as "Difficult to cut materials" because of their low machinability rating. They are difficult to machine because of properties like low thermal conductivity, high strength at elevated temperatures, and high chemical reactivity. Machining of titanium- and nickel-based alloys causes problems of surface integrity and selection of cutting tool materials that is always a challenge for manufacturers. In this work, machinability studies for titanium and nickel alloys are reviewed with reference to cutting tool materials, associated wear mechanisms, failure modes, and novel tooling techniques. It also discusses major surface integrity defects like carbide cracking, white layer formation, work hardening layer formation, residual stresses, and microstructural alterations. Major aim of this work is to evaluate the challenges involved in improving machinability of the titanium- and nickel-based alloys, and determine the future research direction for productivity improvements in machining these alloys.

Place, publisher, year, edition, pages
2014. Vol. 29, no 3, 219-252 p.
Keyword [en]
Nickel, Tools, Machinability, Titanium, Processing, Wear
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-145092DOI: 10.1080/10426914.2014.880460ISI: 000333997400001Scopus ID: 2-s2.0-84896311946OAI: oai:DiVA.org:kth-145092DiVA: diva2:716389
Note

QC 20140509

Available from: 2014-05-09 Created: 2014-05-08 Last updated: 2017-12-05Bibliographically approved
In thesis
1. Numerical and Experimental Investigations of the Machinability of Ti6AI4V: Energy Efficiency and Sustainable Cooling/ Lubrication Strategies
Open this publication in new window or tab >>Numerical and Experimental Investigations of the Machinability of Ti6AI4V: Energy Efficiency and Sustainable Cooling/ Lubrication Strategies
2015 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Titanium alloys are widely utilized in the aerospace, biomedical,marine, petro-chemical and other demanding industries due to theirdurability, high fatigue resistance and ability to sustain elevateoperating temperature. As titanium alloys are difficult to machine, dueto which machining of these alloys ends up with higher environmentalburden. The industry is now embracing the sustainable philosophy inorder to reduce their carbon footprint. This means that the bestsustainable practices have to be used in machining of titanium alloys aswell as in an effort to reduce the carbon footprint and greenhouse gas(GHG) emissions.In this thesis, a better understanding towards the feasibility of shiftingfrom conventional (dry and flood) cooling techniques to the vegetableoil based minimum quantity cooling lubrication (MQCL) wasestablished. Machining performance of MQCL cooling strategies wasencouraging as in most cases the tool life was found close to floodstrategy or sometimes even better. The study revealed that theinfluence of the MQCL (Internal) application method on overallmachining performance was more evident at higher cutting speeds. Inaddition to the experimental machinability investigations, FiniteElement Modeling (FEM) and Computational Fluid Dynamic (CFD)Modeling was also employed to prediction of energy consumed inmachining and cutting temperature distribution on the cutting tool. Allnumerical results were found in close agreement to the experimentaldata. The contribution of the thesis should be of interest to those whowork in the areas of sustainable machining.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2015. xx, 136 p.
Series
TRITA-IIP, ISSN 1650-1888 ; 15:07
Keyword
Titanium alloys, Energy consumption, Wear mechanisms, Finite element analysis, computational fluid dynamic analysis
National Category
Production Engineering, Human Work Science and Ergonomics
Research subject
Production Engineering
Identifiers
urn:nbn:se:kth:diva-173594 (URN)978-91-7595-702-9 (ISBN)
Public defence
2015-10-01, Brinellsal M311, Brinellvägen 68, KTH, Stockholm, 10:00 (English)
Opponent
Supervisors
Note

QC 20150915

Available from: 2015-09-15 Created: 2015-09-15 Last updated: 2015-09-15Bibliographically approved

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Rashid, Amir

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