MICROSTRUCTURE AND PROPERTIES OF KINETICALLY ACTIVATED BAINITE (KAB) STEELS
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
ANALYSIS OF Cu-Al-Mn SHAPE MEMORY ALLOYS AFTER CASTING IN MOULDS
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
EFFECT OF HEAT TREATMENT ON CHARPY IMPACT ENERGY OF MICROALLOYED HSLA STEEL NIOMOL 490K
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
HIGH STRENGTH DUCTILE IRON PRODUCTION BY THE SELECTED HEAT TREATMENT PROCESS
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
THERMODYNAMIC CALCULATION OF THE Al-Sn-Ga PHASE DIAGRAM
Phase diagram of the Al-Sn-Ga ternary system was calculated using optimized thermodynamic parameters for binary sub-systems based on CALPHAD method. Four vertical sections were calculated: Ga0.5Sn0.5-Al, Al0.5Sn0.5-Ga, Al0.5Ga0.5-Sn, and Al0.9GaSn0.1-Ga. Calculated liquidus projection of the Al-Sn-Ga ternary system and isothermal sec...
By Ljubiša Balanović, Dragana Živković, Dragan Manasijević, Jožef Medved, Maja Vončina
POSSIBILITY OF THE PRODUCTION OF PORTLAND-COMPOSITE CEMENTS TYPE 52,5N IN CEMENTPLANT KAKANJ
This article talks about the possibility of production of portland-composite cement in cement plant Kakanj in accordance with the requirements of EN 197-1. By that standard cement class 52,5N must have a compressive strenght greater or equal 20MPa after 2 days, and after 28 days greater or equal 52,5MPa. Portland-composite cement is ...
By Nevzet Merdić, Ilhan Bušatlić, Nedžad Haračić, Nadira Bušatlić
THE PROCESSES OF INTERACTION OF METAL PACKAGING AND PACKED PRODUCTS
In various packaging forms, materials are found directly or indirectly related to the packaged food product and for that reason, they must meet the requirements that enable complete, or within acceptable limits, health and hygienic food safety. During the interaction process of packaging-food contact, the migration of packaging compo...
By Ifet Šišić, Osman Perviz
THE IMPACT OF THE APPLICATION OF THE ELECTRONIC TICKET PAYMENT SYSTEM IN PUBLIC TRANSPORT ON THE REDUCTION OF SULPHUR DIOXIDE CONCENTRATION IN THE AIR
The main objective was to reduce: the time of the bus stops, the time for administrative actions of drivers, fuel consumption, air pollution emissions of SO2 and increase the solvency of the company. For the realization of the objectives set was needed: to introduce electronic billing system with the use of contactless - chip cards. All vehicles ar...
By Jusuf Borić
LCA METHOD AS AN USEFUL TOOL IN PRODUCTION ENGENEERING
The most used and established method for detecting the effects of the product on the environment is a life cycle assessment (LCA) method. LCA analyzes the effects of the product on the environment in its all five life stages: design, materials selection, manufacture, use, and ultimately its removal. At the same time LCA is an important tool wh...
By Borut Kosec, Blaž Karpe, Dragan Gogić, Aleš Nagode, Igor Budak, Milana Ilić, Gorazd Kosec, Zorana Tanasić, Goran Janjić, Mirko Soković
ANALYSIS OF SIMULATION MODELING OF AIR POLUTION FROM KOSTOLAC POWER PLANTS AND MINES
Parameters which define environment conditions are largely qualified with influence of the Kostolac A and Kostolac B energy plants and surface mining of lignite. The air quality is examined continuously by measuring total deposited matter and the emissions of gases such as CO2, SO2, NOx, CO, O3. It is found that pollution substances significantly e...
By Steva K. Jaćimovski, Slobodan Miladinović, Jovan P. Šetrajčić, Siniša M. Vučenović