Experimental and numerical investigation of interfacial microstructure in fully age-hardened 15-5 PH stainless steel during impact welding

Liu, Bert; Palazotto, Anthony N.; Nassiri, A.; Vivek, Anupam; Daehn, Glenn S.

doi:10.1007/s10853-019-03546-0

Cited by 11 publications

(3 citation statements)

References 46 publications

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“…It can be seen in Figure 3 that the critical value of the collision point velocity calculated using Equation (11), which describes the transition to wave formation, is in a good agreement with the results of Wittman′s experimental studies. However, it should be noted that several studies showed that the transition to wave formation depends both on the collision point velocity and on the collision angle (for example, Szecket [45], or Lysak and Kuzmin [46]).…”

Section: Wave Formation Limitsupporting

confidence: 80%

“…Although from a practical point of view this simplification is probably acceptable, since welding at such high velocities is quite rare, nevertheless, these simplifications do not correspond to real experiments. The concept of the critical angle for jet formation at supersonic velocities was considered in detail in the studies of Walsh et al [11] and Cowan et al [19], and an example of its practical application was considered in detail in [36]. According to this concept, at high collision point velocity, a jet is formed only if the collision angle exceeds a certain threshold value.…”

Section: Supersonic Limitmentioning

confidence: 99%

“…SPH technique was used extensively in recent years to analyze various aspects of high-velocity impact welding. Unlike other methods, for example, Euler or Lagrangian, SPH reproduces well the basic phenomena associated with high-velocity impact welding-the formation of jets, waves and vortex zones, and it is well suited for analyzing the pressures in the impact zone [4,[7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

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Welding Window: Comparison of Deribas’ and Wittman’s Approaches and SPH Simulation Results

Émurlaeva

Батаев

Zhou

et al. 2019

Metals

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A welding window is one of the key concepts used to select optimal regimes for high-velocity impact welding. In a number of recent studies, the method of smoothed particle hydrodynamics (SPH) was used to find the welding window. In this paper, an attempt is made to compare the results of SPH simulation and classical approaches to find the boundaries of a welding window. The experimental data on the welding of 6061-T6 alloy obtained by Wittman were used to verify the simulation results. Numerical simulation of high-velocity impact accompanied by deformation and heating was carried out by the SPH method in Ansys Autodyn software. To analyze the cooling process, the heat equation was solved using the finite difference method. Numerical simulation reproduced most of the explosion welding phenomena, in particular, the formation of waves, vortices, and jets. The left, right, and lower boundaries found using numerical simulations were in good agreement with those found using Wittman’s and Deribas’s approaches. At the same time, significant differences were found in the position of the upper limit. The results of this study improve understanding of the mechanism of joint formation during high-velocity impact welding.

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Section: Wave Formation Limitsupporting

confidence: 80%