Investigation of material removal rate (MRR) and wire wear ratio (WWR) for alloy Ti6Al4 V exposed to heat treatment processing in WEDM and optimization of parameters using Grey relational analysis
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Mehmet Altuğ
Abstract
The study examines the changes of the microstructural, mechanical and conductivity characteristics of the titanium alloy Ti6Al4 V as a result of heat treatment using wire electrical discharge machining, and their effect on machinability. By means of optical microscopy and scanning electron microscopy (SEM), analyses have been performed to determine various characteristics and additionally, microhardness and conductivity measurements have been conducted. Material removal rate (MRR) and wire wear ratio (WWR) values have been determined by using L18 Taguchi test design. The microstructures of the samples have been changed by thermal procedures. Results have been obtained by using the Grey relational analysis (GRA) optimization technique to solve the maximum MRR and minimum WWR values. The best (highest) MRR value is obtained from sample E which was water quenched in dual phase processing. The microstructure of this sample is composed of primary α and α’ phases. The best (lowest) WWR value is obtained from sample A.
Kurzfassung
In der diesem Beitrag zugrunde liegenden Studie wird untersucht, wie mittels des Drahtfunkenerodierens (Wire Electrical Discharge Machining (WEDM)) die mikrostruturellen, mechanischen und Leitfähigkeitscharakteristika der Titanlegierung Ti6Al4 V als Ergebnis der Wärmebehandlung verändert werden, und welche Auswirkungen sie auf die maschinelle Bearbeitbarkeit haben. Es wurden Analysen unter Verwendung von Licht- und Rasterelektronenmikroskopie durchgeführt, um die verschiedenen Charakteristika zu bestimmen. Zusätzlich wurden Mikrohärte- und Leitfähigkeitsmessungen durchgeführt. Die Werte der Materialabtragsrate und der Drahtverschleißrate wurden mittels des L18 Taguchi-Versuchdesigns bestimmt. Die Mikrostruktur der Proben wurde mittels thermischer Verfahren verändert. Die Ergebnisse, die mit der relationalen Grey-Analysetechnik erhalten wurden, wurden verwendet, um die maximalen Werte der Abtragsrate und der Verschleißrate zu ermitteln. Der beste bzw. höchste Wert der Abtragsrate ergab sich für die Probe E, bei der ein Wasserabschrecken in dem zweiphasigen Prozess angewandt wurde. Die Mikrostruktur dieser Probe besteht aus primären α- und α’-Phasen. Die beste bzw. niedrigste Verschleißrate ergab sich für die Probe A.
References
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© 2016, Carl Hanser Verlag, München
Articles in the same Issue
- Inhalt/Contents
- Contents
- Fachbeiträge/Technical Contributions
- Application of micro-magnetic testing systems for non-destructive analysis of wear progress in case-hardened 16MnCr5 gear wheels
- Weldability of duplex stainless steels with and without Cu/Ni interlayer using plasma arc welding
- TIG deposition of Ti on steel substrates using Cu as interlayer
- Examinations of casting cracks in a high alloy steel valve
- Analyzing the diffusion weldability of copper and porcelain
- Torsional behavior of a friction welded martensitic stainless steel
- Effects of different wire chemical compositions on the mechanical and microstructural characteristics of copper brazing joints
- Effect of Al addition on microstructure and properties of an Fe-B-Al alloy
- Inspection of domestic nuclear fuel rods using neutron radiography at the Tehran Research Reactor
- Strain measurement in concrete using embedded carbon roving-based sensors
- Wear behavior of multilayer coated carbide tools in finish dry hard turning
- Characteristics of austenitic stainless steel T-joints welded using the DMAG process with solid wire
- Application of the Taguchi method for surface roughness predictions in the turning process
- Experimental failure testing and repair of internal pressurized composite pipes using different fracture models
- Investigation of material removal rate (MRR) and wire wear ratio (WWR) for alloy Ti6Al4 V exposed to heat treatment processing in WEDM and optimization of parameters using Grey relational analysis
Articles in the same Issue
- Inhalt/Contents
- Contents
- Fachbeiträge/Technical Contributions
- Application of micro-magnetic testing systems for non-destructive analysis of wear progress in case-hardened 16MnCr5 gear wheels
- Weldability of duplex stainless steels with and without Cu/Ni interlayer using plasma arc welding
- TIG deposition of Ti on steel substrates using Cu as interlayer
- Examinations of casting cracks in a high alloy steel valve
- Analyzing the diffusion weldability of copper and porcelain
- Torsional behavior of a friction welded martensitic stainless steel
- Effects of different wire chemical compositions on the mechanical and microstructural characteristics of copper brazing joints
- Effect of Al addition on microstructure and properties of an Fe-B-Al alloy
- Inspection of domestic nuclear fuel rods using neutron radiography at the Tehran Research Reactor
- Strain measurement in concrete using embedded carbon roving-based sensors
- Wear behavior of multilayer coated carbide tools in finish dry hard turning
- Characteristics of austenitic stainless steel T-joints welded using the DMAG process with solid wire
- Application of the Taguchi method for surface roughness predictions in the turning process
- Experimental failure testing and repair of internal pressurized composite pipes using different fracture models
- Investigation of material removal rate (MRR) and wire wear ratio (WWR) for alloy Ti6Al4 V exposed to heat treatment processing in WEDM and optimization of parameters using Grey relational analysis