Obiettivo
This research project investigates alternative means of achieving fine ferrite grains, exploiting the heterogeneous nucleation of acicular ferrite, for improving the strength/toughness properties of HSLA steel parent plate and welded material. Steel composition and fine inclusions will be designed in order to improve the low-temperature toughness of the HAZ in submerged arc welds (SAW) characterised by high heat input (>3.5 kJ/mm), and of the weld metal (WM) of joints made by power beam welding without using filler material. The effects of deoxidisation practice, microalloy (Ti, V, B) and alloy (Mn) additions, sulphur and nitrogen content, austenite grain size and cooling conditions will be studied, leading to the production of new AF steels for 15- 70 mm thick plates of S355M/ML - S460M/ML grades with superior HAZ and WM toughness.
Argomento(i)
Invito a presentare proposte
Data not availableMeccanismo di finanziamento
CSC - Cost-sharing contractsCoordinatore
00128 ROMA EUR
Italia