This paper investigates the effects of oil quenching and tempering at various temperatures on the mechanical and structural properties of X155CrVMo12-1 tool steel. The steel specimens were austenitized at 1030 °C for half an hour, followed by quenching and tempering at different temperatures. Mechanical properties were assessed by measuring the...

By Uroš Stamenković, Ivana Marković, Srba Mladenović, Dragan Manasijević, Petar Milanović, Milan Nedeljković

The BAS EN ISO/IEC 17025 standard gives the laboratory the opportunity to accredit the statement of conformity. The statement of conformity is provided in accordance with the specification, standard or costumer requirement. Prior to issuing the statement of conformity, the accredited laboratory, in cooperation with the costumer, must document the d...

By Branka Muminovic, Omer Beganovic, Sinha Korlat-Mahmić, Alma Čelebić-Malkić

This paper examines all transport properties (such as e.g. mechanical resistance, electrical and thermal conductivity, photosensitivity, magnetization, etc.) which are caused by the electron motion in crystalline nanofilms, with two sublattices. We have performed theoretical research using the method of two-time and temperature-dependent Green's fu...

By Siniša Vučenović, Jovan Šetrajčić, Nikola Vojnović

Fillers play a crucial role in enhancing product performance and reducing production costs. To be used in various industries, fillers must be readily available, affordable, pure, non-toxic, and meet specific physical and chemical standards. This study examines limestone and dolomite fillers, focusing on their chemical composition, mineralogical pro...

By Nedzad Haracic, Nevzet Merdić, Ilhan Bušatlić, Nadira Bušatlić, Adelina Pašalić

Toxic metals like arsenic(As), lead (Pb)and cadmium(Cd)  are the major indicators of environmental pollution that have serious impact to human health as well as the environment. Measurement of these metals were done in the samples of : selected plants, Željeznica river, and agricultural soil in  the municipality of Kijevo near Sarajevo ci...

By Aida Šapčanin, Zahida Begović, Amna Kukić, Farzet Bikić

Monitoring cavitation erosion in materials is crucial for their performance in environments characterized by severe fluid flow conditions. Materials such as metals, ceramics, and composites, commonly used in these applications, must possess specific mechanical properties to effectively resist cavitation erosion. Additionally, various environmental ...

By Ana Alil, Stanica Nedović, Sanja Martinović, Tatjana Volkov Husović

The study investigates the Portevin–Le Chatelier (PLC) effect in the cold rolled Al-Mg alloy EN AW-5754. The tensile tests were performed on dog bone specimens at test speeds of 10, 20 and 50 mm/min. Digital image correlation (DIC) and infrared thermography were used to monitor strain rate and temperature changes. The results showed a strong ...

By Ivan Jandrlić, Lorena Mrkobrada

Fuels are substances that release heat energy during combustion due to the oxidation process that occurs. In order for a substance to serve as fuel, it is important that it has a high calorific value, which is most affected by the carbon content. Sulfur has a very small effect on this characteristic of the fuel but is considered as a negative compo...

By Lamija Mujkanović, Nadira Bušatlić, Nedžad Haračić, Nevzet Merdić

In this research, the resulsts of bentonite characterization by XRF before and after adsorption are presented. The influence of temperature and pH on the capacity and efficiency of adsoption of lead (II) ions using bentonite is determined by adsorption experiments for initial lead (II) concentrations of 200, 300 and 400 mg/L, adsorbent dosage of 1 ...

By Amna Karić, Amra Odobašić, Edisa Papraćanin, Azra Halilović

Ferrochrome slag is a by-product of ferrochrome alloy production, which is an important component of stainless steel.  The total production of ferrochrome slag, which increases significantly every year with the increase in stainless steel production, is more than 1.1-1.5 times higher than the production of ferrochrome metal. In order to conser...

By Akın Odabaşı, Gökhan Başman, Tuğçe Ergül, Cengiz Yaşin, Hülya Kaftelen-Odabaşı