Browsing by Subject "pulsation frequency"
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Item type:Article, Access status: Open Access , Plastic deformation of metal by pulsation forming(Wydawnictwa AGH, 2005) Kvačkaj, Tibor; Sokolová, Lucia; Vlado, Martin; Vrchovinský, VladimirPulsation forming of metallic materials (also referred to as stresscycling) is a novel forging method based on the application of a variable pulsation frequency during the metal forming process. This paper presents some new results obtained after pulsation forming of steel grade Cr18Ni1O. The experimental works suggested that the value of summary deformation of 25% (at the pulsation frequency of 30 Hz) was obtained with the very good compromise of yield strength $(R_{p0,2})$, tensile strength $(R_{m})$, elongation $(A_{5})$ and contraction (Z). The results were given with respect to the effect of deformation temperature (from 850 to 920 Celsius degrees) and deformation time (from 2 to 10 sec.) at constant heating temperature (11OOCelsius degrees), constant pulsation frequency (30 Hz) and variant frequency from 10 Hz to 40 Hz on mechanical characteristic $(R_{p0,2}; \; R_{m}; \; A_{5}; \; Z)$ of stainless steel grade Cr18Ni1O.