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http://dx.doi.org/10.14775/ksmpe.2019.18.7.097

Comparative Study on Ablation Characteristics of Ti-6Al-4V Alloy and Ti2AlN Bulks Irradiated by Femto-second Laser  

Hwang, Ki Ha (Graduate school of convergence science, Pusan National University)
Wu, Hua Feng (Graduate school of convergence science, Pusan National University)
Choi, Won Suk (Department of Laser & Electron Beam Application, Korea Institute of Machinery and Material)
Cho, Sung Hak (Department of Laser & Electron Beam Application, Korea Institute of Machinery and Material)
Kang, Myungchang (Graduate school of convergence science, Pusan National University)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.18, no.7, 2019 , pp. 97-103 More about this Journal
Abstract
Mn+1AXn (MAX) phases are a family of nano-laminated compounds that possess unique combination of typical ceramic properties and typical metallic properties. As a member of MAX-phase, $Ti_2AlN$ bulk materials are attractive for some high temperature applications. In this study, $Ti_2AlN$ bulk with high density were synthesized by spark plasma sintering method. X-ray diffraction, micro-hardness, electrical and thermal conductivity were measured to compare the effect of material properties both $Ti_2AlN$ bulk samples and a conventional Ti-6Al-4V alloy. A femto-second laser conditions were conducted at a repetition rate of 6 kHz and laser intensity of 50 %, 70% and 90 %, respectively, laser confocal microscope were used to evaluate the width and depth of ablation. Consequently, the laser ablation result of the $Ti_2AlN$ sample than that of the Ti-6Al-4V alloys show a considerably good ablation characteristics due to its higher thermal conductivity regardless of to high densification and high hardness.
Keywords
$Ti_2AlN$; MAX-phases; Spark plasma sintering; Femto-second laser; Ablation;
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