Effect of Weld Speed on Joint Quality of Nd: YAG Laser Welded Inconel 718 Alloy Weldments Research Scholar, JNTUA

Format:

Book

Conference/Event

Author/Creator:

Thejasree, P., author.

Contributor:

Krishnamachary, P.C.

Conference Name:

International Conference on Advances in Design, Materials, Manufacturing and Surface Engineering for Mobility (2021-10-08 : Chennai, India)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2021

Summary:

Inconel 718, a nickel based superalloy is used in all kinds of applications where outstanding strength and corrosion resistance are essential. The Inconel 718 alloys joints from sheets of 1mm thickness are fabricated using a 4 kW Nd: YAG laser welding equipment. The influence of welding speed on the weld bead ripples, weld morphology, defects and the mechanical properties are investigated. Microstructure of the weld fusion zone, Heat Affected Zone (HAZ) and the weld ripple structure were analyzed using optical microscope and the scanning electron microscope. The weldments obtained were with nominal cracks, porosity and shape imperfections that signifying Nd: YAG laser welding as an effective method for fabricating joints of Inconel 718 of thickness 1mm. The weld fusion zone consists of fine dendritic structure and HAZ is found with columnar grain structure. The welded joints found with a higher joint strength but with a reduced ductility owing to the formation of detrimental laves phase

Notes:

Vendor supplied data

Publisher Number:

2021-28-0263

Access Restriction:

Restricted for use by site license