Work

Selected Problems in Friction Stir Welding of Titanium and Aluminum Armor Grade Alloys

Year: 2024

Type: article

Abstract: In this paper, authors reported selected problems in friction stir welding (FSW) of 5 mm-thick AA7075-T651 and 3 mm-thick Ti6Al4V. The investigation involved macro and micro-structure analysis and mechanical testing. The welded joints of Ti6Al4V were characterized by the presence of backing plate steel fragments and tungsten particles in the bottom part of the stir zone (SZ) and thermo-mechanically affected zone (TMAZ), which resulted in a relatively low value of joint efficiency (60 %). The investigation on AA7075-T651 was concerned with high-speed FSW (HSFSW) using the MX Triflute tool. In all cases, defective welded joints have been obtained (incomplete root penetration, voids in the SZ) with the best result of joint efficiency of about 59 %.

Source: Advances in Military Technology

DOI: 10.3849/aimt.01851

Authors: Robert Kosturek, Janusz Torzewski, Marcin Wachowski, Krzysztof Grzelak, Lucjan Śnieżek

Institution: Military University of Technology in Warsaw

Language: English

Topic: Advanced Welding Techniques Analysis

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funder: Wojskowa Akademia Techniczna

Award: G7537197993