How are residual stresses mapped along the cross-section of welds produced?

Guo et al. have mapped residual stresses along the cross-section of welds produced by different welding methods utilizing the contour method. S700 material was welded with single-pass autogenous laser (ALW), GMAW and multi-pass ultra-narrow gap laser weld (NGLW) using Carbofil 2NiMoCr filler metal.

Which welding consumables have the highest strength?

Welding consumables with necessary strength level and acceptable toughness must be developed and validated. Currently the highest strength level available is 1100 MPa yield strength. Further research could be carried out concerning the production characteristics, solid, flux cored and metal cored wires, of the filler metals.

What information is important for a welded structure?

Information about all regions and subregions of the HAZ are important to assess the suitability of a welded structure for the designed application . Table 12. Abbreviations and temperature ranges of the different HAZ sections .

What is welding metal (WM)?

Weld metal (WM) Deriving the balance between high strength and acceptable toughness in the WM reveals the challenging nature of the development of welding consumables. In order to find the right amount of each component, it is necessary to know the effects of the elements and their interactions in alloy design .

How is the strength of UHSS weld metal controlled?

The strength of UHSS weld metal can be “easily” controlled by the alloying content via solid solution hardening and precipitation hardening. In case of toughness properties, the influence and interactions of various alloying elements is more complex and less well understood.

What types of inclusions are found in the weld metal after welding?

Various types of inclusions can be found in the weld metal after welding. Inclusions can be divided into primary and secondary inclusions depending on their mode of formation. Primary inclusions are a direct result of the welding process employed and welding consumables used.