Journal ArticleDOI
Investigation of microstructure and properties of low-carbon steel during ultrasonic-assisted laser welding and cladding
TLDR
In this article, the possibilities of using ultrasonic vibrations in the processes of laser welding and cladding were investigated, and it was shown that ultrasonic vibration can be used in two different ways: ultrasonic online processing during welding and surfacing and post processing of the finished weld seam and cladded metal.Abstract:
The paper shows the possibilities of using ultrasonic vibrations in the processes of laser welding and cladding. Optical and electron microscopy, local elemental analysis, X-ray tomography, and series of tensile tests were used to investigate the effect of vibrations on the respective processes. It is shown that ultrasonic vibrations can be used in two different ways: ultrasonic online processing during welding and surfacing and post processing of the finished weld seam and cladded metal. In the first case, ultrasonic effect leads to reduction of the weld seam thickness and an increase of the depth of weld penetration. In the second case, ultrasonic post-treatment of the samples produced by layer-by-layer direct laser wire deposition results in an increase of tensile strength of the cladded material up to 1.3 times. It is shown that the effect is caused by formation of an oriented thin-plate structures on the surface of the samples.read more
Citations
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Journal ArticleDOI
Recent research and development status of laser cladding: A review
TL;DR: In this paper, a comprehensive review of the laser cladding (LC) material system is presented, as high entropy alloys (HEAs), amorphous alloy and single crystal alloy have been gradually showing their advantages over traditional metal materials in LC.
Journal ArticleDOI
Investigation of formation and microstructure of Ti-6Al-4V weld bead during pulse ultrasound assisted TIG welding
TL;DR: In this article, the formation and microstructure of TC4 weld bead was investigated by using pulse ultrasound assisted TIG welding (PU-TIG), and the results showed that weld penetration and weld width in the PU-tIG were increased by around 46% and 27%, separately, compared with that of the TIG.
Journal ArticleDOI
Additive manufacturing of Ti6Al4V parts using ultrasonic assisted direct energy deposition
TL;DR: In this article, a fundamentally new method of ultrasonic assisted direct energy deposition (UDED) changes the structure of metal of a Ti6Al4V alloy and increased microhardness.
Journal ArticleDOI
Investigations of the sound frequency effect on laser acoustic welding of stainless steel
TL;DR: In this paper, the key features of laser acoustic welding of AISI 321 stainless steel samples are investigated. And they found that the microstructure and the quality of the welds depend strongly on the frequency of the applied acoustic waves, which were selected at sonic (15 kHz) and ultrasonic (22, 40, 80, and 100 kHz) levels.
Journal ArticleDOI
Equiaxed microstructure formation by ultrasonic assisted laser metal deposition
TL;DR: In this article, ultrasonic vibration was applied on LMD of 316L. Contrastive studies show that columnar microstructures were observed without ultrasound, while equiaxed crystal structures were found with ultrasonic vibrations.
References
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Book
Industrial Applications of Lasers
TL;DR: In this article, the authors present a survey of the current state of the art in the field of laser technology. But they do not consider the application of laser technologies in the context of mask production.
Journal ArticleDOI
Ultrasonically assisted turning of aviation materials
TL;DR: The results of the research in ultrasonically assisted machining are presented in this paper, where turning of modern aviation materials was conducted with ultrasonic vibration applied in the feed direction using an autoresonant control system.
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Application of ultrasonic vibrations in welding and metal processing: A status review
TL;DR: In this article, a systematic in-depth analysis of diversified aspects of ultrasonic application in metal joining and processing including its limitations, future prospects and assessments are classified and discussed, and detailed state-of-the art, experimentation and progresses of the ultrasonic vibrations and its applications in the above areas are comprehensively examined, evaluated and presented for exhaustive understandings of its physical mechanism.
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Investigations on the effects of ultrasonic vibrations in the extrusion process
TL;DR: In this paper, the effects of ultrasonic vibrations on the material flow stress, the equivalent plastic strain distributions and the extrusion force were considered, and it was shown that applying the ultrasonic vibration had no significant affect on the equivalent material strain of the material.
Journal ArticleDOI
Hybrid laser arc welding: State-of-art review
TL;DR: The synergic effects of laser beam and eclectic arc in the same weld pool results in an increase of welding speed and penetration depth along with the enhancement of gap bridging capability and process stability.