The Effects of Pulse Parameters on Weld Geometry and Microstructure of a Pulsed Laser Welding Ni-Base Alloy Thin Sheet with Filler Wire

Chai, Dongsheng; Wu, Dongdong; Ma, Guangyi; Zhou, Siyu; Jin, Zhu; Wu, Dongjiang

doi:10.3390/met6100237

Cited by 12 publications

(6 citation statements)

References 15 publications

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“…Chai et al have realized Hastelloy C-276 thin sheet-0.5 mm in thickness-weld, with filler wire using a pulsed laser. The results indicated that the weld pool geometry and microstructure were significantly affected by the duty ratio, which was determined by the pulse duration and repetition rate under a certain heat input [34].…”

Section: The Present Issuementioning

confidence: 99%

Advances in Welding Metal Alloys, Dissimilar Metals and Additively Manufactured Parts

2018

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Section: The Present Issuementioning

confidence: 99%

Advances in Welding Metal Alloys, Dissimilar Metals and Additively Manufactured Parts

2018

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“…The results indicated that the weld pool geometry and microstructure were significantly affected by the duty ratio, which was determined by the pulse duration and repetition rate under a certain heat input [34].…”

Section: The Present Issuementioning

confidence: 99%

Advances in Welding Metal Alloys, Dissimilar Metals and Additively Manufactured Parts

Casalino

2017

Metals

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Nowadays, strong, light-weight, multi-functional, high performing products are key for achieving success in the worldwide markets. Meeting those requirements calls for enabling technologies that lead to innovative and sustainable manufacturing [1].A joint technique is one or a combination of the available mechanical, chemical, thermal processes to create a bond between materials with a number of combinations and geometries. Welding processes of metal alloys use a thermal energy source that can either melt materials of similar compositions and melting points or produce coalescence at temperatures essentially below the melting point of the base materials being joined. Such well-known welding processes include thermal fusion joining processes and solid-state joining processes; the latter are gaining renewed interest.Among the thermal fusion joining processes, the most common process is electric arc welding. Several methods use the electric arc approach for fusion welding of steel [2], aluminum [3], titanium [4] and magnesium alloys [5]. The selection of filler material is critical for the quality of the dissimilar metal welds [6].Laser beam and electron beam welding are high-energy beam welding methods that can operate in either melt-in/conduction or keyhole mode. In the latter mode, the laser beam is highly effective at welding metals. Similar and dissimilar weld can be produced for appliance, automotive, and aerospace applications [7][8][9].Brazing and soldering involve a filler material, heated to its melting temperature, and applied between the mating parts, which do not melt. Recently, laser autogenous brazing has enabled the selective use of the unique properties exhibited by biocompatible materials such as stainless steel and shape memory materials, such as NiTi, to tailor the properties of implantable medical devices [10]. Important mid-temperature thermoelectric materials such as Pb Te-based alloys can be successfully brazed to form a thermoelectric module [11].Resistance spot welding, which dominates the steel body-in-white production, involves a strong current through the metal combination that heats up and finally melts the metals at localized points. A force is applied before, during and after the application of the current to confine the contact area at the weld interfaces and, in some applications, to forge the workpieces. Similar [12] and dissimilar [13] weld can be easily produced.Within the solid-state joining process, friction stir welding has gained a prominent position. Invented in 1991, it uses a non-consumable tool to join two facing workpieces without melting the workpiece material. Heat is generated by friction between the rotating tool and the workpiece material. This welding method has great capability at welding lightweight [14] and dissimilar weld [15]. Otherwise, friction welding is a process where the two pieces are moved relatively by means of an upsetting force. The relative motion heats the two pieces to a plastic-state. Two friction welding processes are available: linear friction...

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“…In this process, the joints are autogenously generated without additional material. However, in some cases a filler metal or interlayer material is commonly used in dissimilar welds as a strategy for diminishing thermal and physical properties differences [4,5].…”

Section: Introduction 1descriptionmentioning

confidence: 99%

Pulsed Laser Welding Applied to Metallic Materials—A Material Approach

Chludzinski

Santos

Churiaque

et al. 2021

Metals

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Joining metallic alloys can be an intricate task, being necessary to take into account the material characteristics and the application in order to select the appropriate welding process. Among the variety of welding methods, pulsed laser technology is being successfully used in the industrial sector due to its beneficial aspects, for which most of them are related to the energy involved. Since the laser beam is focused in a concentrated area, a narrow and precise weld bead is created, with a reduced heat affected zone. This characteristic stands out for thinner material applications. As a non-contact process, the technique delivers flexibility and precision with high joining quality. In this sense, the present review addresses the most representative investigations developed in this welding process. A summary of these technological achievements in metallic metals, including steel, titanium, aluminium, and superalloys, is reported. Special attention is paid to the microstructural formation in the weld zone. Particular emphasis is given to the mechanical behaviour of the joints reported in terms of microhardness and strength performance. The main purpose of this work was to provide an overview of the results obtained with pulsed laser welding technology in diverse materials, including similar and dissimilar joints. In addition, outlook and remarks are addressed regarding the process characteristics and the state of knowledge.

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The Effects of Pulse Parameters on Weld Geometry and Microstructure of a Pulsed Laser Welding Ni-Base Alloy Thin Sheet with Filler Wire

Cited by 12 publications

References 15 publications

Advances in Welding Metal Alloys, Dissimilar Metals and Additively Manufactured Parts

Advances in Welding Metal Alloys, Dissimilar Metals and Additively Manufactured Parts

Advances in Welding Metal Alloys, Dissimilar Metals and Additively Manufactured Parts

Pulsed Laser Welding Applied to Metallic Materials—A Material Approach

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