Topic
Butt joint
About: Butt joint is a research topic. Over the lifetime, 6840 publications have been published within this topic receiving 36822 citations.
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TL;DR: In this article, an Artificial Neural Network (ANN) model was developed to simulate the correlation between the friction stir welding parameters and mechanical properties, and the model was employed to predict the ultimate tensile strength and hardness of Butt joint of AA7075-O to AA5083-O aluminium alloys.
163 citations
TL;DR: In this article, the microstructure and mechanical properties of friction stir welded dissimilar butt joints of 6061-to-7050 aluminum alloys were evaluated, and two modes of failure were observed, one through the stir zone and the other through the heat-affected zone.
155 citations
TL;DR: In this paper, the effects of initial temper condition and postweld heat treatment on the microstructure and mechanical properties of dissimilar AA7075-O/6061-O and AA70 75-T6/60 61-T 6 butt joints were investigated.
Abstract: In this study, dissimilar AA7075-O/6061-O and AA7075-T6/6061-T6 butt joints were produced by friction stir welding (FSW), and postweld heat treatment (PWHT) was applied to the joints obtained. The effects of initial temper condition and PWHT on the microstructure and mechanical properties of the dissimilar joints were thus investigated. It was demonstrated that sound dissimilar joints can be produced for both temper conditions. A hardness increase in the joint area (i.e., strength overmatching) was obtained in the joints produced in the O-temper condition, whereas a hardness loss was observed in the joint area of the joints obtained in the T6 temper condition. It was also well demonstrated that PWHT could be used in order to improve the joint properties for both O and T6 joints provided that the joint is defect-free prior to subsequent heat treatment.
154 citations
25 May 2009-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this paper, the spreading behavior of liquid filler metal on the groove surface and microstructure characteristics of the butt joint were investigated and the average tensile strength of the Butt joint reached 120.0 MPa and fracture occurred at the interfacial layer.
Abstract: Dissimilar metals TIG welding–brazing of 5A06 aluminum alloy to SUS321 stainless steel had been conducted using 4047 Al–Si eutectic filler metal and modified non-corrosive flux. And spreading behavior of filler metal on the groove surface and microstructure characteristics of the butt joint were investigated. The spreading behavior of liquid filler metal consisted of two parts: one was to spread on the back face to pack the steel; the other was to uphill spread on the front face of the groove to form a sound brazed seam. The interfacial layer, unequal in thickness at different position, ranged from 5 μm to 35 μm. And it was made up of three different kinds of IMC layers: from the welded seam to stainless steel, the first was τ 5 -Al 7.2 Fe 2 Si and α-Al phases, the second was η-Fe 2 Al 5 phase, and the third was FeSi 2 and η-Fe 2 Al 5 phases. Average tensile strength of the butt joint reached 120.0 MPa and fracture occurred at the interfacial layer. Cracks derived from the top part of brittle η-Fe 2 Al 5 interfacial layer when its thickness exceeded 10 μm.
154 citations
TL;DR: In this paper, residual stresses in welded components are discussed and a brief review of weld simulation is presented and the general methodology of the FE analysis methods used for welded sections of steel pipes is explained.
149 citations