Thermal Relaxation Features of Residual Stresses Arising upon Laser Shock Processing of Heat-Resistant Materials

Сахвадзе, Г. Ж.; Кавтарадзе, Р. З.; Natriashvili, Tamaz; Sakhvadze, G. G.

doi:10.3103/s105261881905011x

Cited by 2 publications

(1 citation statement)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 9 shows that for a wider range of f, the simulation predicts a linear relation between the maximum cool-down temperature of the surface and the repetition rate. The thermal relaxation of the residual stresses induced by LSP has been reported previously [19,20] in annealing processes with temperatures in the range of 200-650 • C, although this effect is more important for longer times. In this case, the annealing time is short, but the affected volume is also smaller than in previous studies.…”

Section: Discussionmentioning

confidence: 65%

Picosecond Laser Shock Micro-Forming of Stainless Steel: Influence of High-Repetition Pulses on Thermal Effects

et al. 2022

View full text Add to dashboard Cite

A study of the peen forming of thin stainless steel metal foils (50 μm thick) using a solid-state ps-pulsed laser, emitting at a wavelength of 1064 nm was conducted. The pitch distance between consecutive laser pulses was kept constant by tuning the laser repetition rate from 0.4 to 10 kHz, and subsequently the scanning speed. The induced bending angle and the radius of curvature were used to measure the effect of the treatment. Their dependence on the pulse energy, the treated area, the distance between lines, and the laser repetition rate was studied. High repetition rates do not allow the sample to cool down, affecting the bending to the point of being negligible. An FEM simulation and experiments were carried out to prove that the increase in temperature due to high repetition rate can relax the stresses induced by laser peen treatment, thus preventing bending in the sample.

show abstract

Section: Discussionmentioning

confidence: 65%

Picosecond Laser Shock Micro-Forming of Stainless Steel: Influence of High-Repetition Pulses on Thermal Effects

et al. 2022

View full text Add to dashboard Cite

show abstract

Thermal relaxation of residual stresses, arising in heat-resistant materials after application of laser shock processing technology

Pugachev

Сахвадзе

2019

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

The study of thermal relaxation of residual stresses in heat-resistant steel 37Kh12N8G8MFB (GH2036) after the application of laser shock processing technology and subjected to annealing at temperatures up to 650°C. For estimating residual stresses and their relaxation from the action of high temperature a calculation model has been proposed. The high efficiency of the proposed technology for hardening the surface layers of thermally loaded material was shown.

show abstract

Thermal Relaxation Features of Residual Stresses Arising upon Laser Shock Processing of Heat-Resistant Materials

Cited by 2 publications

References 17 publications

Picosecond Laser Shock Micro-Forming of Stainless Steel: Influence of High-Repetition Pulses on Thermal Effects

Picosecond Laser Shock Micro-Forming of Stainless Steel: Influence of High-Repetition Pulses on Thermal Effects

Thermal relaxation of residual stresses, arising in heat-resistant materials after application of laser shock processing technology

Contact Info

Product

Resources

About