This article presents the results of a series of experiments performed to assess the dynamic response of circular monolithic steel and steel–polyurea bilayer plates to impulsive loads. A convenient technique to enhance the energy absorption capability of steel plates and to improve their resistance to fracturing in dynamic events, is to spray-cast a layer of polyurea onto the plates. Since poly...

The hot workability of microalloyed steel was studied in the deformation temperature range 850?1200?C and strain rate 0.001-100s-1. constitutive relation flow stress with temperature, established to construct processing maps steel. were constructed using conventional power law, integral method, Arrhenius equations. developed used predict optimal conditions validated metallurgical examinations. ...

The combined effect of the cooling rate and microalloying has been studied from suction casted Cu50Zr50, Cu49.5Zr50Fe0.5 Cu49Zr50Fe1 at. % rods 2 mm 4 diameter. For samples, ∼1000 K/s rate, microstructure mostly consists B2 CuZr austenite it is basically same for all compositions. However, 0.5 Fe addition promotes formation stress-induced B19’ martensite upon wear testing thus improving resista...

cast connections. ABSTRACT: Diagonal bracings are extremely popular elements for lateral load resistance in steel-framed buildings. In turn, the most common shape used for bracing members is the hollow structural section. While the design of such members is straight-forward, the design of gusset-plate connections at the member ends is controversial. This paper reviews the current ‘state-of-the-...

The paper presents a multiobjective optimization approach to process parameter optimization in continuous casting of steel, which is the most widely used steel production process. The optimization task is to find parameter values such that the target values of the empirical metallurgical optimization criteria are approached as closely as possible, since this in turn results in high quality of t...

Nodular cast iron insert will be used as the inner component of nuclear fuel disposal canister. The outer cover of the canister is copper tube of 50 mm nominal thickness. Nodular cast iron insert is cast around several steel channels, which also strengthen the structure. The mechanical properties of the cast iron insert will be tested according EN-1563 /1/. According the specifications 100% NDT...

High-strength microalloyed steels are widely used in various branches of technology and industry due to the simultaneous combination high indicators strength, ductility, fatigue, corrosion resistance, other service properties. This is achieved reasonable choice optimal chemical composition parameters temperature-deformation treatment steel that provide a synergistic effect on dispersed microstr...