Optimization of the wear behavior of uncoated, TiN and AlTiN coated cold work tool steel 1.2379 using response surface methodology
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Ali Emrah Bülbül
, Hakan Dilipak , Murat Sarıkaya and Volkan Yılmaz
Abstract
In this study, the wear behavior of uncoated, TiN and AlTiN coated cold work tool steel 1.2379 which is widely used in the mold industry was investigated experimentally. Heat treatment was applied to the specimens, then TiN and AlTiN PVD coating process was performed. The wear tests were carried out at 0.5 m × s−1 sliding speed, 5, 10 and 15 N loads and 120 m sliding distance by using reciprocating abrasion device. The microhardness was measured and metallographic tests of the samples were investigated by SEM and EDS analysis. In order to examine the effect of process parameters on wear results, a statistical method such as analysis of variance (ANOVA) was employed. A mathematical model was created by using regression analysis based on both linear model and quadratic model for predicted wear value. Process parameters were optimized using response surface methodology with desirability function analysis. It is observed that the uncoated specimens worn approximately two times more than AlTiN coated and one time more than TiN coated. In the SEM images and EDS analysis, it is seen that the coating is spread uniformly on the materials.
Kurzfassung
In der diesem Beitrag zugrunde liegenden Studie wurde das Verschleißverhalten eines unbeschichteten sowie TiN- und AlTiN-beschichteten Kaltarbeitsstahls 1.2379 experimentell untersucht, der in der Industrie breitflächig für Formen eingesetzt wird. Die Proben wurden einer Wärmebehandlung unterzogen und danach einem PVD-Beschichtungsprozess mit TiN und AlTiN ausgesetzt. Die Verschleißversuche wurden bei einer Reibgeschwindigkeit von 0,5 m × s−1 sowie einer Beanspruchung von 5, 10 bzw. 15 N und einer Schleiflänge von 120 m mit einer sich hin- und herbewegenden Abrasionseinrichtung durchgeführt. Die Mikrohärte wurde gemessen und metallografische Untersuchungen mittels SEM und EDS durchgeführt. Um die Effekte der Prozessparameter auf die Verschleißergebnisse zu ermitteln, wurde als statistisches Verfahren eine Varianzanalyse (ANOVA) durchgeführt. Es wurde ein mathematisches Modell erstellt und eine Regressionsanalyse basierend auf einem linearen sowie einem quadratischem Modell für den vorhergesagten Verschleißwert durchgeführt. Die Prozessparameter wurden optimiert, indem diesogenannte Response-Surface-Methode mit einer Wunschfunktionsanalyse angewendet wurde. Dabei ergab sich, dass die unbeschichteten Proben etwa zweimal mehr verschlissen wurden als die AlTiN-beschichteten Proben und etwa einmal mehr als die TiN-beschichteten Proben. In den REM-Untersuchungen und EDS-Analysen stellte sich heraus, dass die Beschichtung gleichmäßig auf den Werkstoffen verteilt war.
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© 2016, Carl Hanser Verlag, München
Articles in the same Issue
- Inhalt/Contents
- Contents
- Fachbeiträge/Technical Contributions
- Quantification of vanadium precipitates in HSLA steel by synchrotron X-ray absorption spectroscopy (XAS)
- Optimization of the wear behavior of uncoated, TiN and AlTiN coated cold work tool steel 1.2379 using response surface methodology
- Sensitivity analysis of the residual stress state in friction stir welding of high strength aluminum alloy
- Probability of detection of minute defects by ultrasonic automated testing equipment in view of Bayesian inference
- Parameters in lock-in thermography of CFRP laminates
- Effect of tool material on microstructure and mechanical properties in friction stir welding
- Microstructures of an AZ61 wrought magnesium alloy fabricated by a novel SPD process using thermomechanical simulation
- Corrosion resistance and microstructure of alloy 625 weld overlay on ASTM A516 grade 70
- Effects of post-curing on the thermo-mechanical behavior and the chemical structure of highly filled phenolic molding compounds
- Effect of pressing temperature on the wear resistance of a Co-based Cr-Mo powder alloy produced by hot pressing
- Deep micro-hole drilling of Hardox 500 by electro-discharge machining
- Optimization of thin-wall structures using hybrid gravitational search and Nelder-Mead algorithm
- Structural design of vehicle components using gravitational search and charged system search algorithms
- Electrical resistivity and strength properties of sodium hydroxide contaminated soil solidified with cement
Articles in the same Issue
- Inhalt/Contents
- Contents
- Fachbeiträge/Technical Contributions
- Quantification of vanadium precipitates in HSLA steel by synchrotron X-ray absorption spectroscopy (XAS)
- Optimization of the wear behavior of uncoated, TiN and AlTiN coated cold work tool steel 1.2379 using response surface methodology
- Sensitivity analysis of the residual stress state in friction stir welding of high strength aluminum alloy
- Probability of detection of minute defects by ultrasonic automated testing equipment in view of Bayesian inference
- Parameters in lock-in thermography of CFRP laminates
- Effect of tool material on microstructure and mechanical properties in friction stir welding
- Microstructures of an AZ61 wrought magnesium alloy fabricated by a novel SPD process using thermomechanical simulation
- Corrosion resistance and microstructure of alloy 625 weld overlay on ASTM A516 grade 70
- Effects of post-curing on the thermo-mechanical behavior and the chemical structure of highly filled phenolic molding compounds
- Effect of pressing temperature on the wear resistance of a Co-based Cr-Mo powder alloy produced by hot pressing
- Deep micro-hole drilling of Hardox 500 by electro-discharge machining
- Optimization of thin-wall structures using hybrid gravitational search and Nelder-Mead algorithm
- Structural design of vehicle components using gravitational search and charged system search algorithms
- Electrical resistivity and strength properties of sodium hydroxide contaminated soil solidified with cement