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Title: Investigating the effects of mitigation techniques on residual stress and microstructure of HSLA welds
Authors: Alipooramirabad, H
Ghomashchi, R
Paradowska, AM
Reid, M
Keywords: Neutron diffraction
Residual stresses
Heat treatments
Pressure vessels
Issue Date: 3-Jul-2016
Publisher: Materials Research Forum LLC
Citation: Alipooramirabad, H., Ghomashchi, R., Paradowska, A. & Reid, M. (2016). Investigating the effects of mitigation techniques on residual stress and microstructure of HSLA welds. Paper presented to the 10th International Conference on Residual Stresses (ICRS 10), Sydney, Australia, 3-7 July, 2016. In T. M. Holden, T. M., O. Muránsky, & L. Edwards (Eds) (2017). Residual stresses ICRS-10. Millersville, USA: Materials Research Forum LLC. doi:10.21741/9781945291173-95
Abstract: Post-weld heat treatment is often required for pressure vessel and piping components for relaxing residual stresses and increasing the resistance to brittle fracture. The present study employed neutron diffraction to examine the effects of conventional post-weld heat treatment (PWHT) on the residual stresses in multi-pass, high-strength, low-alloy-steel, weld joints made by combined Modified Short Arc Welding (MSAW) and Flux Cored Arc welding (FCAW) processes. Residual stresses in excess of yield strength were developed in the Heat Affected Zone (HAZ) and the weld metal of the as-welded specimen (particularly the upper layers of the weld) which were reduced significantly as a result of applying PWHT. Also PWHT lead to substantial changes in the microstructural characteristics of high-strength, low-alloy-steel welds. © The Authors
ISBN: 9781945291173
Appears in Collections:Conference Publications

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