In situ neutron diffraction measurement of strain relaxation in welds during heat treatment
Source abstract
Abstract
Neutron diffraction (ND) is commonly used to investigate the stress redistribution before and after post-weld heat treatment (PWHT) in welded structures. However, there is a lack of information on the evaluations of strains during PWHT. The present work employed in situ ND to measure the relaxation of residual strains during conventional PWHT in multi-pass high-strength low-alloy steel welds. It was found that strain relaxation occurs principally during the heating stage of the heat treatment. The findings have important economic bearings and can be used to characterise comparable material combinations and optimise the PWHT process for high-strength low-alloy weld joints. This unique information also provides a valuable benchmark for the finite element modelling of this complex process.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Welding Techniques and Residual Stresses · Non-Destructive Testing Techniques · Microstructure and Mechanical Properties of Steels
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Mechanical Engineering, The University of Adelaide, Adelaide, SA, Australia
Bragg Institute, Australian Nuclear Science and Technology Organisation (ANSTO), Lucas Heights, NSW, Australia
Funding
Australian Nuclear Science and Technology Organisation · Australian Welding Solutions · welded structures foundation
References (21)
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