Simulation of laser impact welding for dissimilar additively manufactured foils considering influence of inhomogeneous microstructure

Sunny, Sumair; Gleason, Glenn; Mathews, Ritin; Malik, Arif

doi:10.1016/j.matdes.2020.109372

Cited by 14 publications

(4 citation statements)

References 84 publications

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“…The authors reported that each impact angle had an effective velocity for the flyer to collide with the target and form a bonded joint. This research emphasizes the importance of controlling these parameters to achieve reliable welds in dissimilar material combinations, as illustrated by Sunny, S., et al [15].…”

Section: Introductionmentioning

confidence: 84%

“…Metals 2024, 14, 342 2 of 15 One notable benefit of LIW in comparison to explosive welding or electromagnetic welding lies in its ability to apply impact precisely to a specific location with sub-micron precision with simple fixturing and short process times. Additionally, LIW requires a relatively low amount of energy, typically in the range of a few joules.…”

Section: Introductionmentioning

confidence: 99%

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The Effects of Target Thicknesses and Backing Materials on a Ti-Cu Collision Weld Interface Using Laser Impact Welding

Abdelmaola,

Thurston,

Panton

et al. 2024

Metals

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This study demonstrates that the thickness of the target and its backing condition have a powerful effect on the development of a wave structure in impact welds. Conventional theories and experiments related to impact welds show that the impact angle and speed of the flyer have a controlling influence on the development of wave structure and jetting. These results imply that control of reflected stress waves can be effectively used to optimize welding conditions and expand the range of acceptable collision angle and speed for good welding. Impact welding and laser impact welding are a class of processes that can create solid-state welds, permitting the formation of strong and tough welds without the creation of significant heat affected zones, and can avoid the gross formation of intermetallic in dissimilar metal pairs. This study examined small-scale impact using a consistent launch condition for a 127 µm commercially pure titanium flyer impacted against commercially pure copper target with thicknesses between 127 µm and 1000 µm. Steel and acrylic backing layers were placed behind the target to change wave reflection characteristics. The launch conditions produced normal collision at about 900 m/s at the weld center, with decreasing impact speed and increasing angle moving toward the outer perimeter. The target thickness had a large effect on wave morphology, with the wave amplitude increasing with target thickness in both cases, peaking when target thickness is about twice flyer thickness, and then falling. The acrylic backing showed a consistently smaller unwelded central zone, indicating that impact welding is possible at a smaller angle in that case. Strength was measured in destructive tensile testing. Failure was controlled by the breakdown of the weaker of the two base metals over all thicknesses and backings. This demonstrates that laser impact welding is a robust method for joining dissimilar metals over a range of thicknesses.

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Section: Introductionmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

The Effects of Target Thicknesses and Backing Materials on a Ti-Cu Collision Weld Interface Using Laser Impact Welding

Abdelmaola,

Thurston,

Panton

et al. 2024

Metals

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“…The continuity, momentum, energy and mass transport equations during laser gas oxidation are given in Equations (1)–(4), respectively [17-19] where , , , , , and D denote the velocity, density, dynamic viscosity, specific heat, thermal conductivity, and diffusion coefficient, respectively; t , , , T , , and denote the time, body force, press, temperature, energy source terms, and concentration, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…The continuity, momentum, energy and mass transport equations during laser gas oxidation are given in Equations ( 1)-( 4), respectively [17][18][19]…”

Section: Numerical Simulationmentioning

confidence: 99%

Laser gas oxidising of Ti–6Al–4V surface: experimental and numerical investigation

Guo

Bian

Zhang

et al. 2022

Surface Engineering

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The laser gas oxidising of Ti-6Al-4V surface was studied. Confocal laser scanning microscopy techniques were used to investigate its two-and three-dimensional surface topographies. Gas flow behaviour was simulated to define the minimum O 2 concentration required for Ti-6Al-4V to self-sustain combustion. To understand the flow behaviour of the Ti-6Al-4V fluid, a highspeed camera monitored the evolution of the Ti-6Al-4V fluid, and the flow behaviour was simulated. Experimental and simulation results show that Ti-6Al-4V can self-sustain combustion with a high O 2 to Ar gas flow ratio, and the oxidising layer is rough with macroscopic cracks, while a low O 2 to Ar gas flow ratio results in a smooth oxidising layer without cracks. Ti-6Al-4V can self-sustain combustion when the O 2 concentration exceeds 65%. Furthermore, the laser molten pool and self-sustaining combustion zone mix and flow together, and a large self-sustaining combustion zone leads to a low convection velocity.

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A novel solid-state metal additive manufacturing process – Laser-induced Supersonic Impact Printing (LISIP): Exploration of process capability

Liao,

Rubbi,

Mao

et al. 2024

Additive Manufacturing

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Simulation of laser impact welding for dissimilar additively manufactured foils considering influence of inhomogeneous microstructure

Cited by 14 publications

References 84 publications

The Effects of Target Thicknesses and Backing Materials on a Ti-Cu Collision Weld Interface Using Laser Impact Welding

The Effects of Target Thicknesses and Backing Materials on a Ti-Cu Collision Weld Interface Using Laser Impact Welding

Laser gas oxidising of Ti–6Al–4V surface: experimental and numerical investigation

A novel solid-state metal additive manufacturing process – Laser-induced Supersonic Impact Printing (LISIP): Exploration of process capability

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