Influence of ultrasonic vibrations on the properties of press-and-sintered titanium

Fartashvand, Vahid; Abedini, Rezvan; Abdullah, Amir

doi:10.1177/09544054221078386

Cited by 6 publications

(2 citation statements)

References 30 publications

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“…It is equipped with a precision oil pump, an electro-hydraulic servo valve, and a PC servo controller on the platform of a cylinder mounted host, achieving multi-channel closed-loop control and capable of completing fully automatic control and measurement functions during the experimental process. Compared with the research method in reference [12], the test scheme in this paper can better reflect the change law of the whole damage cycle. The strength test results obtained by comparing three different samples are shown in Fig.…”

Section: Testing Of Tensile Strength and Impact Toughnessmentioning

confidence: 99%

Application of ultrasonic vibration in magnesium alloy lap welding

Tian

2024

J. vibroeng.

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In order to enhance the performance of magnesium alloy and galvanized steel welds, ultrasonic vibration was applied to the laser welding process, and the effect of ultrasonic on mechanical properties was verified through experimental methods. The laser welding system for the lap weld seam was designed, and the ultrasonic vibration module and image detection module were added, which can obtain the influence of ultrasonic vibration on the molten pool area. Under the conditions of ultrasonic vibration power of 1000 W and 0 W, the characteristics of the weld pool area, metallographic structure, tensile strength, fracture morphology, hardness, residual stress, wear resistance, and corrosion resistance of the weld specimen were compared. The image data acquisition structure indicated that ultrasonic vibration can effectively reduce the ineffective area of the molten pool and make the energy in the molten pool more concentrated. Under the influence of ultrasonic vibration, the maximum molten pool area decreased to 5.38 mm2, with a variation range of 3.9 %, and the proportion of pores was greatly reduced. Research found that ultrasonic vibration can significantly improve the microstructure characteristics of the fusion welding zone, with an average grain size reduced to 23 μm. The reduction of grain size and refinement of microstructure were beneficial to the improvement of mechanical properties of magnesium alloy joints, with a yield strength increase of 6.5 %. Ultrasonic vibration had little effect on the hardness of the heat affected zone, it can increase the average hardness of the weld zone by more than 5 % and reduce the maximum residual stress by more than 50 %. Under different pressure and friction speed conditions, the maximum wear amount can be reduced by more than 25 %. At the same time, the resistance to oxidation corrosion and electrochemical corrosion also can be improved to a certain extent.

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Section: Testing Of Tensile Strength and Impact Toughnessmentioning

confidence: 99%

Application of ultrasonic vibration in magnesium alloy lap welding

Tian

2024

J. vibroeng.

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show abstract

“…These data are used in hot compaction simulation with and without ultrasonic vibrations. Vibration amplitude and resonant frequency have been measured in the experimental test phase [41], and the sound speed and density have been extracted from [42]. Power law creep constants and friction coe cient were extracted from the inverse analysis.…”

Section: Finite Element Simulationmentioning

confidence: 99%