Characterization of the surface and mechanical properties of the friction stir welding in tri-dissimilar joints with aluminum alloys and titanium alloy

Delijaicov, Sérgio; Yakabu, D. Y.; Macedo, B. De; Resende, Hugo; Batalha, Mário Henrique Fernandes

doi:10.1007/s00170-017-1306-x

Cited by 13 publications

(5 citation statements)

References 13 publications

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“…Constant parameters used in the experiments are given in Table 1. Ti6Al4V (Titanium Grade 5) Ti alloy used as a workpiece has a wide range of uses such as military equipment, navy, protection, aerospace, medical technology, ultrasonic thanks to its low specific gravity and high mechanical properties [19,20]. Ti alloys are generally selected according to phase transformations and Ti6Al4V alloy is in the α/β group.…”

Section: Experimental Studymentioning

confidence: 99%

“…If equation 17 is arranged for , ueq can be expressed as follow (18) With ksw=0.5 and Ω= 0.1, Switching function, usw can be expressed as in Eq. 19 (19) Acceleration data received from the cutting tool was used as feedback information in the turning process. With the help of the acceleration data, the necessary reaction force for the actuator is calculated.…”

Section: Active Vibration Control 31 Sliding Mode Control Theorymentioning

confidence: 99%

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WITHDRAWN: Identification of Chatter Vibrations and Active Vibration Control by Using Sliding Mode Controller on Dry Turning of Ti6al4v

Güvenç

Bilgiç

Mıstıkoğlu

2021

Preprint

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In recent years, with the development of sensor technologies, communication platforms, cyber physical systems, storage technologies, internet applications and controller infrastructures, the way has been opened to produce competitive products with high quality and low cost. In turning, which is one of the important processes of machining, chatter vibrations are among the biggest problems affecting product quality, productivity and cost. There are many techniques proposed to reduce chatter vibrations for which the exact cause cannot be determined. In this study, an active vibration control based on Sliding Mode Control (SMC) has been implemented in order to reduce and eliminate chatter vibration, which is undesirable for the turning process. In this context, three-axis acceleration data were collected from the cutting tool during the turning of Ti6Al4V. Finite Impulse Response (FIR) filtering, Fast Fourier Transform (FFT) analysis and integral process were carried out in order to use the raw acceleration data collected over the system in control. The system was modeled mathematically and an active control block diagram was created. It was observed that chattering decreased significantly after the application of active vibration control. The surface quality formed by the amplitude of the graph obtained after active control has been compared and verified with the data obtained from the actual manufacturing result.

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Section: Experimental Studymentioning

confidence: 99%

Section: Active Vibration Control 31 Sliding Mode Control Theorymentioning

confidence: 99%

WITHDRAWN: Identification of Chatter Vibrations and Active Vibration Control by Using Sliding Mode Controller on Dry Turning of Ti6al4v

Güvenç

Bilgiç

Mıstıkoğlu

2021

Preprint

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“…Large TA showed low penetration whereas TA close to zero showed an irregular mixture presenting higher temperatures due to higher torques causing void defects. 77 Vertical force. The VF showed the WS and the TA to exert greater influence in the joint.…”

Section: Friction Stir Lap Weldingmentioning

confidence: 99%

“…Minimum TRS and maximum WS resulted in maximum torque. 77 Microstructure. Yu et al 5 varied TRS at constant WS and found that when TRS 1000 r/min or lower then defect-free joints were obtained, with further increase in TRS leads to surface flash and hook formation as shown in Figure 15.…”

Section: Friction Stir Lap Weldingmentioning

confidence: 99%

Solid-state joining of aluminum to titanium: A review

Gadakh¹,

Badheka

Mulay

2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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The dissimilar material joining of aluminum and titanium alloys is recognized as a challenge due to the significant differences in the physical, chemical, and metallurgical properties of these alloys, where the increasing demands for high strength and lightweight alloys in aerospace, defense, and automotive industries. Joining these two alloys using the conventional fusion techniques produces commercially unacceptable sound joints due to irregular, complex weld pool shapes, cracking and low strength, high residual stresses, cracks, and microporosity, and the brittle intermetallic compounds formation leads to poor formability or inferior mechanical properties. The formation of intermetallic compounds is inevitable but it is less severe in solid-state than in the fusion welding process. Hence, this article reviews on aluminum–titanium joining using different solid-state and hybrid joining processes with emphasis on the effect of process parameters of the different processes on the weld microstructure, mechanical properties along with the type of intermetallic compounds and defects formed at the weld interface. Among the various solid-state welding processes for aluminum–titanium joining, the following grades of aluminum and titanium alloys were employed such as cp Ti, Ti6Al4V, cp Al, AA1xxx, AA 2xxx, AA5xxx, AA6xxx, AA7xxx, out of which Ti6Al4V and AA6xxx alloys are the most common combination.

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“…On the aluminum side, residual stress and microhardness show a strong relationship the high value of residual stress resulted in a low value of microhardness. On the titanium side, residual stress shows a relation with temperature; the high value of temperature resulted in a low value of stress [17]. In the friction stir welding process, a large number of heat transfers to the spindle from the friction stir tools, resulting in low welding thermal efficiency and adverse impact on spindle bearings.…”

Section: Introductionmentioning

confidence: 99%

Studies on Effect of Welding Parameters on the Friction Stir Welding of Aluminium 6061-T6 Butt Welded Joints using Taguchi L9 Approach

Maneiah¹,

Tjprc²

2018

IJMPERD

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The two sheets of aluminum 6061-T6 alloy of size 200×150×3 (mm) are butt-welded by the friction stir welding process by varying the weld parameters such as rotational speed, tilt angle, and feed. The taguchi L9 experimental technique is used to draw the experimental conditions by taking the above said friction-stir welding process parameters.The temperature of the weld bead during the friction-stir welding is measured. The hardness of the weld bead is measured by using the hardness testing machine to find out the hardness value of the weld joints and on the base plates. Analysis of variance (ANOVA) analysis is performed to test the significance of the experimental model at 95% confidence interval.Optimality of the friction-stir welding process parameters for the butt welding of aluminum 6061-T6 alloy is obtained by using the multiple response desirability factors.

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Characterization of the surface and mechanical properties of the friction stir welding in tri-dissimilar joints with aluminum alloys and titanium alloy

Cited by 13 publications

References 13 publications

WITHDRAWN: Identification of Chatter Vibrations and Active Vibration Control by Using Sliding Mode Controller on Dry Turning of Ti6al4v

WITHDRAWN: Identification of Chatter Vibrations and Active Vibration Control by Using Sliding Mode Controller on Dry Turning of Ti6al4v

Solid-state joining of aluminum to titanium: A review

Studies on Effect of Welding Parameters on the Friction Stir Welding of Aluminium 6061-T6 Butt Welded Joints using Taguchi L9 Approach

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