IIW White Paper

Reduction and/or elimination of distortion and residual stresses (near-net welding) will also have a major impact on the quality and structural integrity performance of welds, leading to corresponding savings in production costs. Research should be focusing on the “on-line techniques” (such as mechanical tensioning) to introduce compressive residual stresses while reducing/eliminating distortion. Developing capability to predict distortion of complex weld geometry and understand the effect of residual stresses on fatigue, corrosion and fracture is essential for many applications. In the longer term, basic research activities will be scientifically challenging to replace Cr and Ni in welding consumables while more alloy development for high performance welded structures will remain as high priority areas. In this context, new filler metals, more weldable alloys and advanced joining techniques must improve productivity while reducing emissions of toxic fumes and other pollutants to contribute to achieve improved environment and safer working conditions. All of the scientific challenges identified above require attracting globally top-quality personnel, scientists and enhancing their core competency for innovations while developing solutions for the identified high-priority R&D needs and problems. IIW with its Working Units should further develop its knowledge management systems and continue to create forums to develop and conduct tasks, and support a high level of global scientific awareness. IIW with its global organisation should provide a forum to identify research needs and emerging scientific challenges to help with the establishment of a baseline of knowledge and set clear directions and recommendations for further research in member countries while providing quick dissemination of new findings. Finally,

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Through Optimum Use and Innovation of Welding and Joining Technologies

Improving Global Quality of Life