Steels for Bridge Structures

Metallurgist - We consider domestic and foreign standards for rolled metals used in bridge building. Domestic standards contain elevated requirements to the reliability of rolled metals in terms of...     

Relationship of failure energy and amount of ductile component in a fracture during the DWTT for rolled plate prepared by controlled rolling

Typical features and the difference in specimen fractures are described for rolled plate DWTT specimens manufactured by controlled rolling technology with final deformation in the two-phase γ+α-region, or controlled rolling with final deformation in the γ-region and subsequent accelerated cooling. The question is considered of the effect of the amount of absorbed energy on specimen failure mechanism with dropweight testing. Results are provided for evaluation of the ratio of the amount of ductile component in a fracture and total specimen failure energy during the DWTT for rolled plate of strength class Kh70.     

Production of corrosion-resistant strip (strength class K50–K52) at OAO Ural’skaya Stal’

Industrial testing and production of corrosion-resistant 08ΓЩΦ-Ysteel strip (strength class K50–K52) on the 2800 mill at OAO Ural’skaya Stal’ is described. Differences are noted in the degree of alloying and mechanical properties of strip produced by quenching and tempering and by thermomechanical rolling with accelerated cooling.