Variation Behavior of Residual Stress Distribution by Manufacturing Processes in Welded Pipes of Austenitic Stainless Steel

Ihara, Ryohei; Hashimoto, Tadafumi; Mochizuki, Masahito

doi:10.2472/jsms.61.961

J. Soc. Mat. Sci., Japan

2012

DOI: 10.2472/jsms.61.961

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Variation Behavior of Residual Stress Distribution by Manufacturing Processes in Welded Pipes of Austenitic Stainless Steel

Ryohei Ihara¹,

Tadafumi Hashimoto²,

Masahito Mochizuki³

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2024

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Cited by 7 publications

References 17 publications

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Hardness Prediction of the Heat-Affected Zone in Multilayer Welded SUS316 Stainless Steel Based on Dislocation Density Change Behavior

Yu,

Nishimoto,

Hirata

et al. 2024

Metall Mater Trans A

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The effects of strain hardening and recovery/recrystallization on the hardness of the heat-affected zone (HAZ) in multilayer welded austenitic stainless steel SUS316 were investigated in this study. The results revealed that strain hardening due to welding strain and softening due to recovery/recrystallization were the dominant factors affecting the hardness change in the HAZ during multilayer welding process. Furthermore, the relationship between the strain and dislocation density and that between the recovery/recrystallization and dislocation density were quantitatively investigated using positron annihilation lifetime spectroscopy. Based on these results, a new hardness prediction method based on the change in dislocation density in the HAZ during multilayer welding was proposed. The hardness values in the HAZ after the multilayer welding were predicted based on the simulated strain and thermal history, and the calculated hardness values agreed well with the measured results. This indicates that the newly proposed hardness prediction method based on the dislocation density change behavior in the HAZ during multilayer welding is valuable and effective for selecting the appropriate welding conditions before actual welding.

show abstract

Hardness Prediction of the Heat-Affected Zone in Multilayer Welded SUS316 Stainless Steel Based on Dislocation Density Change Behavior

Yu,

Nishimoto,

Hirata

et al. 2024

Metall Mater Trans A

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show abstract

Numerical analysis of residual stress distribution generated by welding after surface machining based on hardness variation in surface machined layer due to welding thermal cycle

Ihara

Okano

Mochizuki

2016

Welding International

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Numerical Analysis of Residual Stress Distribution Generated by Welding After Surface Machining Based on Hardness Variation in Surface Machined Layer due to Welding Thermal Cycle

Ihara

Okano

Mochizuki

2014

QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY

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Variation Behavior of Residual Stress Distribution by Manufacturing Processes in Welded Pipes of Austenitic Stainless Steel

Cited by 7 publications

References 17 publications

Hardness Prediction of the Heat-Affected Zone in Multilayer Welded SUS316 Stainless Steel Based on Dislocation Density Change Behavior

Hardness Prediction of the Heat-Affected Zone in Multilayer Welded SUS316 Stainless Steel Based on Dislocation Density Change Behavior

Numerical analysis of residual stress distribution generated by welding after surface machining based on hardness variation in surface machined layer due to welding thermal cycle

Numerical Analysis of Residual Stress Distribution Generated by Welding After Surface Machining Based on Hardness Variation in Surface Machined Layer due to Welding Thermal Cycle

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