Cu-alloys have been intensively studied because of their high thermal conductivity, good electrical and shape memory properties and low cost. Cu-Al-Mn alloys show a higher ductility and elongation in relation to the other Cu-based alloys, as well as a good potential for a cold drawing. Therefore, the investigation of these alloys is ...

By Tamara Holjevac-Grgurić, Dragan Manasijević, Dragana Živković, Ljubiša Balanović, Stjepan Kožuh, Robert Pezer, Ivana Ivanić, Ivan Anžel, Borut Kosec, Ladislav Vrsalović, Mirko Gojić

Shape memory alloys (SMAs) are advanced functional materials suitable for technical applications. Among them Cu-Al-Mn alloy is a promising candidate for industry applications (mechanical engineering, electro-engineering etc.) due to their ductility. In this work analysis of the Cu-Al-Mn alloy after smelting and casting in the laborat...

By Mirko Gojić, Stjepan Kožuh, Ivana Ivanić, Tamara Holjevac-Grgurić, Robert Pezer, Ivan Anžel, Borut Kosec, Milan Bizjak, Ladislav Vrsalović, Dragana Živković

High strength low alloy (HSLA) steels represents a group of low carbon steels that utilise small amaunts of alloying elements, such as Mo, Ti, V and Nb, to attain yield strengths in excess of 275 MPa in the as rolled condition. The main properties of HSLA steels that make them for wide variety of applications are: strength and toughn...

By Gorazd Kosec, Jelena Vojvodić-Tuma, Mirko Gojić, Borut Kosec, Milan Bizjak, Aleš Nagode

Austempering is two steps heat treatment process that, when applied to ductile iron, produces components that have properties superior to those processed by conventional treatment. Depending to chosen heat treatment parameters different final properties of the casting are obtained. In this paper heat treatment parameters for producti...

By Hasan Avdušinović, Almaida Gigović-Gekić

Based on microscopic (exciton) theory of optical properties of symmetrically perturbed ultrathin molecular films, the absorption, reflection and transparency indices were formulated and presented in the function of frequencies of external electromagnetic field in near IR region. It has been showed that all optical properties depend o...

By Siniša Vučenović, Dragana Rodić, Jovan P. Šetrajčić

Ratio of ultimate tensile strength and yield stress shows lower values in cold drawn wire than in hot rolled state. The results of research addressing the effect of variations in chemical composition of continuous casted billets on mechanical properties of cold-formed wire used in production of steel mesh are presented. In the c...

By Šaban Žuna, Aida Mahmutovic, Faik Uzunović, Sead Spužić

Oil pump, apropos gear pump is used for lubrication in the automotive industry. In the process of the engine, and the oil pump, there is rotation of the shaft and without bearing sleeve there would be „spending”casing which is made of cast iron. The bearing sleeve is mounted in order to reduce wear and ensure the consiste...

By Belma Fakić, Adisa Burić, Edib Horoz, Amira Pašalić, Elvedin Ćosatović

Nanotechnology relates to the production and management of the materials whose phases dimensions are (grains of structure and manufactured of layers) up to 100 nm. Nanotechnology and nanomaterials lead to major breakthroughs in many areas of scientific research with practical application in the industrial sector. The global mark...

By Mirsada Oruč, Sulejman Muhamedagić, Almaida Gigović-Gekić, Raza Sunulahpašić

Many types of alloys are available as dental implants, but titanium and its alloys have been widely used due to their outstanding properties. In this research titanium alloys with different Zr contents were prepared by arc-melting. Phase identification was performed by XRD analysis. Microstructure was observed by light microscope aft...

By Ljerka Slokar, Anita Štrkalj, Zoran Glavaš

KAB steels are a newly developed grade of advanced ultra high strength steels, which distinguish themselves by the rapid formation of fine nanostructured carbide free lower bainite. The term nanostructured is used with respect to the thickness of the individual bainitic ferrite plates which can vary between 50 nm to as fine as a few ...

By Peter Kirbiš, Mihael Brunčko, Ivan Anžel