The results of two light optical tomographies (LOT) of two-phase steels are presented and compared in this paper. Two-phase steels show a microstructure consisting of a carbon-rich second phase and a ferritic matrix. In this work, microstructures are compared with a martensitic and a bainitic second phase. Tomographies are very important for materi...

By Emina Vardo, Jessica Gola, Frank Mücklich

The purpose of this paper is to describe the basic reasons for obtaining narrower clad layers of CuZn10 alloy in regards to the central layer of steel strip DC04 are described. Some reasons for the reduction of the thickness of clad layers along the side edges of the strip are also described, as well as the change in the length of these parts with ...

By Omer Beganović, Almedina Čamdžić, Faik Uzunović

The great development of the industry has caused the need for systematization in the classification of raw materials and finished products. For this reason, all industrialized countries have their own standards, so called national standards or norms for production and delivery. With the unification of European countries, and also for the import and...

By Mirsada Oruč, Raza Sunulahpašić, Almaida Gigovic-Gekic, Sulejman Muhamedagić

Austempered Ductile Iron (ADI) is obtained by exactly controlled heat treatment process of nodular cast iron. Ductile iron samples are first austenitised to dissolve carbon, then quenched rapidly to the austempering temperature to avoid the formation of deleterious pearlite or martensite. Resulting ausferrite microstructure consists of acicular fer...

By Hasan Avdušinović, Almaida Gigovic-Gekic, Šehzudin Dervišić

Mechanical properties of the ductile iron strongly depend on its microstructure. Different microstructural constituents result in different values of mechanical and ductile properties of ductile iron castings. One of the possibilities to design (define) microstructure of ductile iron castings is an application of different heat treatment processes....

By Hasan Avdušinović, Salaheldin Abdelmagid Mohamed Badreldin, Mohammed Abdelgadir Abdalla Mohammed, Faik Uzunović

Clinker dust or cement kiln dust (CKD) is fine granulated material which generate during the thermal treatment of raw meal and during the clinker cooling process. By applying different methods in certain stages of the technological process it is possible to extract the mentioned dust. The chemical composition of the clinker dust depends on type and...

By Nevzet Merdić, Nedžad Haračić, Ilhan Bušatlić, Nadira B Bušatlić, Zehrudin Osmanović, Nisad Avdić

This paper presents a model of molecular ultrathin (nano) crystalline film and feature research methodology of exciton system as well as analysis of dielectric properties of these spatially very restricted structures with perturbed fundamental parameters on surfaces. Using the two-time Green's functions, adapted for research of symmetry breaking cr...

By Siniša M. Vučenović, Jovan P. Šetrajčić

In recent decades, the interest in refractory materials which are formed without baking - by chemicalbonding - has increased significantly, as their production is less complex and more economical thanthe production of classical refractory materials, which involves a long baking process. In this work,as a chemical binder, phosphoric acid, which is i...

By Nadira Bušatlić, Ilhan Bušatlić, Nedžad Haračić, Nevzet Merdić

Gypsum is added to the Portland cement clinker in the amount of 3 to 5% in the grinding phase as the binding rate regulator. When it comes to the hydration of cement, if sufficient amount of gypsum is added, fast cementation will not occur because gypsum by its presence reduces the solubility of tricalcium aluminate and thus slows down rapid reacti...

By Ilhan Bušatlić, Amna Karić

Urban environments are subject to various pollutions where, among other things, acoustic pollution. Consequently, the study of acoustic pollution is an issue that is addressed in several aspects: economic, political and scientific / research.In this paper we propose a simulation model through the Matlab / Simulink software that shows the effect of ...

By Jozef Bushati, Virtyt Lesha, Darko Petković, Diana K Karuović