Revolutionizing hardness via nanoparticle flux in welding of high-hardness armor steel

Kim, Chang Jong; Jeong, Young Cheol; Son, Hwi Jun; Seo, Bo Wook; Kim, Seok; Lyu, Sung-Ki; Hou, Xiangying; Cho, Young Tae

doi:10.1016/j.matdes.2024.113001

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2024

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Cited by 2 publications

References 23 publications

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A Study of the $\mu$ -Solder Joint on Ajinomoto Build-up Film using the Solder on Pad (SOP) process for Multi-Chip Module

Zhang,

Liu,

Liu

et al. 2024

2024 25th International Conference on Electronic Packaging Technology (ICEPT)

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A Study of the $\mu$ -Solder Joint on Ajinomoto Build-up Film using the Solder on Pad (SOP) process for Multi-Chip Module

Zhang,

Liu,

Liu

et al. 2024

2024 25th International Conference on Electronic Packaging Technology (ICEPT)

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Effects of novice developed TIG welding parameters on the microstructures and hardness of API 5L X65 High-Strength Low-Alloy (HSLA) Steel

Ahmad,

Iqbal,

Bilal

et al. 2024

Preprint

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API 5L X65 is a commonly utilized pipeline material for gas transportation by Sui Northern Gas Pipelines (SNGPL) Private Limited, which employs submerged arc welding (SAW). Three samples, sourced from in-service seamless pipe with a 3x6 inches cross-section, were subjected to TIG welding experiments. Basic techniques, including gas, lathe, shaper, and hacksaw cuttings, were employed to prepare the samples. The microstructural analysis and hardness test results indicated that the lowest current was optimal, as per Ohm's law (V = IR). The low current in amperes (A) and high resistance resulted in a higher melting temperature, increasing molten puddle flowability and ease of control. Conversely, high current welding (120 A) led to the formation of porosity defects, as confirmed by radiographic tests, which also showed a lack of penetration (LOP). The hardness testing further supported HV (HRB) scale values for the low current welded samples, while the high current welded sample exhibited poor hardness due to low temperatures and insufficient weld zone fusion. In summary, the results from microstructural analysis, radiographic testing, and hardness testing, all indicate that TIG welding is a suitable procedure for repairing API 5L X65 steel due to the ease of controlling microstructures at low currents in the weldment.

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Revolutionizing hardness via nanoparticle flux in welding of high-hardness armor steel

Cited by 2 publications

References 23 publications

A Study of the $\mu$ -Solder Joint on Ajinomoto Build-up Film using the Solder on Pad (SOP) process for Multi-Chip Module

A Study of the $\mu$ -Solder Joint on Ajinomoto Build-up Film using the Solder on Pad (SOP) process for Multi-Chip Module

Effects of novice developed TIG welding parameters on the microstructures and hardness of API 5L X65 High-Strength Low-Alloy (HSLA) Steel

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