Process – mechanical properties evaluation of friction stir welding lap joint using aluminium alloy AA6061 workpiece material

Ahmad Buni, Najib Shauqi (2022) Process – mechanical properties evaluation of friction stir welding lap joint using aluminium alloy AA6061 workpiece material. Project Report. Melaka, Malaysia, Universiti Teknikal Malaysia Melaka. (Submitted)

	Text (24 Pages) Process – mechanical properties evaluation of friction stir welding lap joint using aluminium alloy AA6061 workpiece material.pdf - Submitted Version Download (361kB)
	Text (Full Text) Process – mechanical properties evaluation of friction stir welding lap joint using aluminium alloy AA6061 workpiece material.pdf - Submitted Version Restricted to Registered users only Download (14MB)

Abstract

Friction Stir Welding (FSW) is an advanced solid-state joining techniques that use non-consumable tool to join two plates in a specially designed pin in underwater and dry condition. Due to the use of water in the welding process at the UFSW, the welding zone's surrounds are not harmed by high temperatures. The test analysis is to study the relationship between microstructural data and mechanical behavior of the welded joint. Spindle speed (1400, 1575, 1750 rpm) and feed rate (20, 25, 30 mm/min) with square, thread, and hexagon tool pin profiles will be the parameter used in this project. Tool material used is the AISI D2 tool steel. Cutting operation will be performed using Conventional/CNC Turning Machine and EDM Wire Cut Machine. The purpose of the test is to determine the tensile strength and porosity of the welded zone. The SHIMADZU AG-100KN PLUS Tensile Testing Machine, as well as the Zeiss AxioLab A1 Upright Light Microscope and Zeiss EVO SEM Machine, were used to conduct the test analysis. The procedure is to weld two 2mm aluminium alloy plate using overlapped joint in underwater and dry condition and look into the relationship of the welding morphology and the tensile strength. From the experiment the maximum tensile strength value for an underwater environment is 78.4927 Mpa, while the lowest tensile strength value is 50.9120 Mpa. The greatest tensile strength value for dry conditions is 83.5088 MPa, while the lowest tensile strength value is 46.1185 MPa. Overall result show that thread pin profile contributes to the lowest tensile strength value for both condition and square for the highest. The porosity visibility is on the opposite of the tensile strength value as the relationship of both of the factors is inversely proportional. The conclusion of this thesis experiment includes suggestions for future research endeavours.

Actions (login required)

View Item