Effect of Tool Pin Length on Microstructure and Mechanical Strength of the FSW Joints of Al 7075 Metal Sheets

Wrońska, A.; Andres, Jacek; Altamer, Tomasz; Dudek, A.; Ulewicz, Robert

doi:10.26552/com.c.2019.3.40-47

Cited by 5 publications

(2 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From Figure 5 a–i, it can be seen that certain visible defects, such as hooks and kiss bonding, are present in various layers of the FSAM part which is identical to the findings reported by Yu Chen et al [ 39 ] and Wronska et al [ 40 ]. Since FSAM consist of multiple layers formed by repeated FSLW technique, the intricate nature of the material flow during this process leads to several types of flaws.…”

Section: Resultssupporting

confidence: 86%

Novel Technique for Design and Manufacture of Alternating Gradient Composite Structure of Aluminum Alloys Using Solid State Additive Manufacturing Technique

Venkit

Selvaraj

2022

Materials

View full text Add to dashboard Cite

This work analyzes a novel solid-state manufacturing approach of a friction stir additive manufacturing (FSAM) technique for fabricating multiple layers of alternating gradient composite structure using alternate layers of AA6061-T6 and AA7075-T6 aluminum alloys of 3 mm thickness. The evolution of the microstructure along the build direction and its impact on the tensile and microhardness properties were examined using optical microscopy, tensile tests, and Vickers microhardness tests. Nonuniform microstructures were detected along the build direction, and it was concluded that the most productive part of the construction was the nugget zone, which had fine equiaxed grains. It was identified that the grain sizes and precipitate sizes were affected by the varying thermal cycles created by the multiple passes of the tool. These events were identified as the primary reasons for the increase in strength and hardness of the FSAM build from the lower layer to the upper layer. In the final FSAM build the maximum hardness value was obtained as 182.3 HV and the ultimate tensile strength (UTS) was 420 MPa both of which were identified at the topmost layer. Moreover, the postmortem of the fractured samples revealed that the cause of failure was a combination of both ductile and brittle fractures. The findings of this study suggest that the FSAM approach may be used to fabricate large structures that are free of defects having expected mechanical characteristics and hence the newly fabricated composite can be used as a suitable substitute for the conventional AA6061 material applied in automobile components for its improved performance.

show abstract

Section: Resultssupporting

confidence: 86%

Novel Technique for Design and Manufacture of Alternating Gradient Composite Structure of Aluminum Alloys Using Solid State Additive Manufacturing Technique

Venkit

Selvaraj

2022

Materials

View full text Add to dashboard Cite

show abstract

“…the main disadvantages of the resistance welding process of aluminum alloys include high energy consumption, sensitivity of the process to all kinds of surface contamination and risk of hot cracking. other factors influencing the formation of defects in welds are electrode wear and inaccurate process parameters [5,6].…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

2022

View full text Add to dashboard Cite

The Influence of ModIfIcaTIon of The fronT Surface GeoMeTry of The rfSSW Tool Sleeve on The PlaSTIcIzaTIon effecT and STIrrInG MaTerIalS durInG JoInInG SheeTS Made of aluMInuM alloy 2024the paper presents the results of research and analysis of the effect of joining by the RFssW method of alclad sheets made of al2024 with an anodic oxide coating, with the using the tool with modified geometry of the front surface of inner sleeve. the different effects of the modifications made on the phenomenon of plasticization and stirring of materials in the process of creating a weld, microstructure of welds and mechanical strength of lap joints were shown. the tests were carried out on 1.27 mm thick sheets, with the use of an unmodified tool and modified tools with three variants of the geometry. the welds and the joints samples were subjected to metallographic and strength tests. it has been shown that the use of a properly selected modified geometry has a beneficial effect on the transport of materials to be joined in the joint zone (flow pattern of plasticized layers and the stirring effect) during the welding, which translates into the strength of the joints and the nature of the weld failure.

show abstract

Synergic enhancement of ductility and toughness in friction stir additively fabricated AA6061-T6 build

Choudhury,

Acharya,

Sethi

et al. 2024

Journal of Adhesion Science and Technology

View full text Add to dashboard Cite

Effect of Tool Pin Length on Microstructure and Mechanical Strength of the FSW Joints of Al 7075 Metal Sheets

Cited by 5 publications

References 15 publications

Novel Technique for Design and Manufacture of Alternating Gradient Composite Structure of Aluminum Alloys Using Solid State Additive Manufacturing Technique

Novel Technique for Design and Manufacture of Alternating Gradient Composite Structure of Aluminum Alloys Using Solid State Additive Manufacturing Technique

Archives of Metallurgy and Materials

Synergic enhancement of ductility and toughness in friction stir additively fabricated AA6061-T6 build

Contact Info

Product

Resources

About