Methods of overlapping closed joints in friction stir welding of thin wall structures made of aluminium alloys

Velichko, O. V.; Ivanov, S. Yu.; Karkhin, Victor A.; Khomich, P. N.; Lopota, Vitaliy A.; Makhin, I. D.

doi:10.1080/09507116.2016.1148406

Cited by 6 publications

(5 citation statements)

References 3 publications

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“…Al-Mg-Si alloys have many advantages such as medium resistance, plasticity, good welding characteristics and corrosion resistance that caused their use in many applications, for example, automobile and aerospace industry [7,8]. The alloy 6082 T6 which was investigated in the present research belongs to the group of the age-hardenable aluminium alloys.…”

Section: Introductionmentioning

confidence: 99%

Temperature Influence on Microstructure and Properties Evolution of Friction Stir Welded Al-Mg-Si Alloy

Naumov

Morozova

Isupov

et al. 2019

KEM

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The temperature influence on the microstructure evolution and microhardness of the age-hardenable aluminium alloy 6082 T6 during friction stir welding was defined. In order to achieve this aim, the thermocycles calculated using the developed 3D Finite Element Model were physically simulated on the Gleeble-3800 in the points which located in the different zones of the weld. The microstructure in the chosen points after Gleeble testing was investigated as well as the microhardness was measured. The results were consequently compared with the relevant results obtained after friction stir welding. It was shown that the microstructure and microhardness profile are influenced not only by temperature but by deformation. The increase in hardness in different zones after FSW compared to Gleeble testing can be explained by the grain refinement in the nugget zone as well as the hardening precipitate distribution along the weld which can occur more rapidly due to the deformation influence.

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Section: Introductionmentioning

confidence: 99%

Temperature Influence on Microstructure and Properties Evolution of Friction Stir Welded Al-Mg-Si Alloy

Naumov

Morozova

Isupov

et al. 2019

KEM

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“…Welding and brazing of dissimilar metals and particular joints are old but yet often discussed problems [1], [2], [3], [4], [5]. In such studies porosity is often measured or estimated along with mechanical properties, like ultimate tensile strength or microhardness [6][7] [8], due to the considerable influence of porosity on mechanical [9] and physical [10] properties of joint metal.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Porosity Evaluation Methods Using the Example of Dissimilar Metal Joints

Kurushkin

Mushnikov

Rylkov

et al. 2019

KEM

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Welded metal porosity significantly influences the mechanical properties of dissimilar metal joints. In this study, the comparison of porosity evaluation methods was held using the sample of welded-brazed zinc coated steel and Al-Mg-alloy plates joint. Relative porosity was measured through cross-sections’ images area analysis, as well as it was evaluated through 3D-fitting of spotted on these images pores. Area and size of pores was measured, volume and distribution were evaluated. It was found that relative porosity values estimated by 2D and 3D methods are equal.

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“…Friction surfacing (FS) is a coating technology based on the process of joining materials in a solid state. FS is a variation of the friction stir processing for materials joining [1][2][3][4]. The complexity of material flow during FSW is a result of severe plastic deformation realized at high strain rates [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Finite Element Simulation of Temperature Field during Friction Surfacing of Al-5Mg Consumable Rod

Isupov

Panchenko

Zhabrev

et al. 2019

KEM

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A finite element model was developed to determine the temperature distribution in the preheating phase of the friction surfacing (FS) process. In the present study consumable rod was used as a tool. As a model of the heat source, a model applicable to the traditional friction stir welding (FSW) was used. The developed model has been validated by a full-scale experiment. Temperature fields were obtained for different modes of the FS process, where the variable parameters were the axial force and the speed of rotation of the consumable rod. The difference between calculated and experimental data is less than 10%. Influence of the axial force magnitude on the consumable rod and the rod rotation speed on the temperature field generated by friction and plastic deformation of the consumable rod was established.

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Methods of overlapping closed joints in friction stir welding of thin wall structures made of aluminium alloys

Cited by 6 publications

References 3 publications

Temperature Influence on Microstructure and Properties Evolution of Friction Stir Welded Al-Mg-Si Alloy

Temperature Influence on Microstructure and Properties Evolution of Friction Stir Welded Al-Mg-Si Alloy

Comparison of Porosity Evaluation Methods Using the Example of Dissimilar Metal Joints

Finite Element Simulation of Temperature Field during Friction Surfacing of Al-5Mg Consumable Rod

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