Suppression of Helium Induced Cracking in Laser Repair Welding of Highly Irradiated Stainless Steels

Chen, Jian; Tatman, Jonathan K.; Zhao, Feng; Miller, Roger G.; Curlin, Stephanie; Dai, Tao; Mao, Keyou; Sutton, Benjamin J.; Frederick, Greg

doi:10.1016/j.jnucmat.2021.153206

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…Additional details of the welding trials on unirradiated SS304 for the welding coupons in this work shown in Figure 4 and Figure 5 of previous section have been reported in the previous report (M2LW-20OR0406015). Based on the previous research, there exists a threshold of effective welding heat input as a function of helium concentration for welding of irradiated SS304 (Chen, et al 2021) as shown in Figure 6 (dashed line). No HeIC forms below the threshold (dashed line), but above the threshold, welds have a high tendency to contain cracks.…”

Section: Selection Of Welding Parametersmentioning

confidence: 85%

“…The list of parameter sets is provided in Table 3. The welding parameters were selected based on the recent successful laser welding of irradiate stainless steels of high levels of helium (Chen, et al, 2021). Additional details of the welding trials on unirradiated SS304 for the welding coupons in this work shown in Figure 4 and Figure 5 of previous section have been reported in the previous report (M2LW-20OR0406015).…”

Section: Selection Of Welding Parametersmentioning

confidence: 99%

See 1 more Smart Citation

Collaborative Study on Weldability of Irradiated Stainless Steel 304 Materials Removed from The NRU Reactor

Chen¹,

Zhu²,

Miller³

et al. 2023

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Section: Selection Of Welding Parametersmentioning

confidence: 85%

Section: Selection Of Welding Parametersmentioning

confidence: 99%

Collaborative Study on Weldability of Irradiated Stainless Steel 304 Materials Removed from The NRU Reactor

Chen¹,

Zhu²,

Miller³

et al. 2023

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An experimentally validated thermomechanical model for a parametric study on reducing residual stress in cast iron repair welding

Farahani,

Eder,

Alizadeh-Sh

et al. 2024

Int J Adv Manuf Technol

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Remarkable casting properties and superior mechanical characteristics of cast iron make it an ideal material for a wide range of industrial applications. However, the production of cast iron components may result in the formation of cracks and defects, posing a significant threat to their structural integrity. Repair welding is a promising solution to resolve cast iron production defects. However, repair welding cast iron components poses unique challenges that stem from residual stress (RS) formation and the possibility of cracking during the repair process. Moreover, research on cast iron repair is scarce. To overcome these challenges, this paper presents a thermo-mechanical model validated by experiments to reduce RS in cast iron repair welding through the optimization of welding parameters and weld sequences as well as the geometry of the repair area. An experimental bead-on-plate weld is set up in order to validate the developed thermo-mechanical model. The temperature distribution in the weld is measured using thermocouples placed around the weld line. An X-ray diffraction technique is used to measure the axial and transverse RS at different points around the weld line. The developed finite element model is employed to simulate the repair welding process and analyze the effect of inter-pass temperature, the number of welding passes, welding sequences, and groove geometry on the RS. The numerical approach applied in this study provides a framework for repair welding optimization of cast iron and other materials, fostering the development of more efficient and reliable repair methods for industrial applications.

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Weldability of irradiated Stainless Steel 304 materials harvested from the National Research Universal (NRU) reactor

Chen

Tatman

et al. 2023

Journal of Nuclear Materials

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Suppression of Helium Induced Cracking in Laser Repair Welding of Highly Irradiated Stainless Steels

Cited by 3 publications

References 10 publications

Collaborative Study on Weldability of Irradiated Stainless Steel 304 Materials Removed from The NRU Reactor

Collaborative Study on Weldability of Irradiated Stainless Steel 304 Materials Removed from The NRU Reactor

An experimentally validated thermomechanical model for a parametric study on reducing residual stress in cast iron repair welding

Weldability of irradiated Stainless Steel 304 materials harvested from the National Research Universal (NRU) reactor

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