Friction stir processing (FSP) is a surface treatment technology that can eliminate casting defects locally by refining microstructures, thereby improving the mechanical properties of material.

Welding of super bainitic and triplex structure steels was studied using AWS A5.5 E11018-M and AWS A5.4 E312-17 electrodes. The existence of martensitic structure at the heat affected zone encourages the occurrence of cold cracking at the HAZ in welding of both super bainitic and triplex steels. Using E312-17 electrode renders the occurrence of cold cracks at the heat affected zone of these steels. The tensile strength of welded joints using E11018-M electrode is higher than that of the pure weld metal of E11018-M electrode. This could be attributed to the dilution of weld metal from the base metal especially carbon content. The V– notch impact test results using E312-17 electrode were slightly higher than that obtained using E11018-M electrode. This could be attributed to the occurrence of cold cracks using E11018-M electrode in addition to the tough austenitic weld metal using E312-17 electrode.

news in steel

RRP – REYHER Rapid Prototyping supports component optimization

High costs during assembly, operations and maintenance can be avoided by optimization in the design phase, for joining technology too. The new 3D printing service RRP – REYHER Rapid Prototyping supports companies improving component design, reducing development costs and shortening time-to-market.

HYBRIT orders Norwegian electrolyzers for fossil free steel production in Luleå

Hybrit Development, a joint venture between SSAB, LKAB and Vattenfall, has ordered a hydrogen generation electrolyzer solution from Nel Hydrogen to the pilot plant in Luleå, Sweden.

Tibnor’s acquisition of Sanistål’s steel distribution business completed

SSAB’s subsidiary Tibnor has now comleted the acquisition of the steel distribution business of the Danish company Sanistål A/S, Denmark’s second largest steel distributor.

NUCOR TAPS DANIELI MI.DA. TECHNOLOGY FOR ITS STRATEGIC EXPANSION IN REGIONAL REBAR MARKETS

When exploring the opportunity to expand its presence in new regional markets in the Midwest and Southeast of the USA, Nucor immediately understood the benefits of the MI.DA. technology and ultimately chose Danieli to supply the complete technological equipment package for two MI.DA. plants, in Sedalia (Missouri) and Frostproof (Florida).