title: Experimental study of direct laser deposition of Ti-6Al-4V and Inconel 718 by using pulsed parameters.
abstract: Laser direct metal deposition (LDMD) has developed from a prototyping to a single metal manufacturing tool. Its potential for creating multimaterial and functionally graded structures is now beginning to be explored. This work is a first part of a study in which a single layer of Inconel 718 is deposited on Ti-6Al-4V substrate. Single layer tracks were built at a range of powder mass flow rates using a coaxial nozzle and 1.5 kW diode laser operating in both continuous and pulsed beam modes. This part of the study focused on the experimental findings during the deposition of Inconel 718 powder on Ti-6Al-4V substrate. Scanning electron microscopy (SEM) and X-ray diffraction analysis were performed for characterization and phase identification. Residual stress measurement had been carried out to ascertain the effects of laser pulse parameters on the crack development during the deposition process.
authors.affiliation: Institute of Mechatronics Engineering, University of Engineering & Technology, Peshawar 25100, Pakistan.
authors.forename: Kamran
authors.initials: K
authors.lastname: Shah
authors.affiliation: Institute of Mechatronics Engineering, University of Engineering & Technology, Peshawar 25100, Pakistan.
authors.lastname: Izhar Ul Haq
authors.affiliation: Mechanical Engineering Department, University of Engineering & Technology, Peshawar 25000, Pakistan.
authors.forename: Shaukat Ali
authors.initials: SA
authors.lastname: Shah
authors.affiliation: Institute of Mechatronics Engineering, University of Engineering & Technology, Peshawar 25100, Pakistan.
authors.forename: Farid Ullah
authors.initials: FU
authors.lastname: Khan
authors.affiliation: Institute of Mechatronics Engineering, University of Engineering & Technology, Peshawar 25100, Pakistan.
authors.forename: Muhammad Tahir
authors.identifier: 0000-0001-8657-8150
authors.initials: MT
authors.lastname: Khan
authors.affiliation: Institute of Mechatronics Engineering, University of Engineering & Technology, Peshawar 25100, Pakistan.
authors.forename: Sikander
authors.initials: S
authors.lastname: Khan
mesh_terms: D000497:Alloys / Q000737:chemistry*; D000535:Aluminum / Q000737:chemistry; D007834:Lasers; D014025:Titanium / Q000737:chemistry; D014639:Vanadium / Q000737:chemistry
chemical_list: D000497:Alloys; D014639:Vanadium; D000535:Aluminum; D014025:Titanium