MANUFACTURING AND CHARACTERIZATION OF Ti6Al4V ALLOY BY SELECTIVE LASER MELTING
Titanium and its alloys, particularly Ti6Al4V, are widely used, especially in aerospace andmedicine due to their relatively low density, high strength, and good corrosion resistance. However,there are formidable challenges in casting, forming, and machining titanium alloys, which result infinal products that are considerably more expensive. Additiv...
By Matija Zorc, Aleš Nagode, Maja Pogačar, Blaž Karpe, Borut Kosec, Milan Bizjak
OPTIMISATION OF CHAMBER FURNACE TECHNOLOGICAL PARAMETERS FOR HIGH CHROMIUM STEEL ROLLS HEAT TREATMENT
In this work, industrial control technical measurements of the heat treatment of high chromium steel (HCS) rolls is presented.Measurements were carried out on the gas fired car bottom chamber furnace Bosio PP-KP 70/1150 in the company Valji d.o.o., Štore, Slovenia. Temperature measurements of the individual heating zones of the furnace, roll...
By Blaž Karpe, Simon Rečnik, Aleš Nagode, Borut Kosec, Sergej Novak, Stjepan Kožuh
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
THE INFLUENCE QUENCHING AND TEMPERING ON PROPERTIES OF Cu-Al-Ni SHAPE MEMORY ALLOY
The paper presents comparison of microstructure and hardness of Cu-Al-Ni shape memory alloy before and after heat treatment (quenching at 900°C/60 min/water and tempering at 300°C/60 min/water). Microstructural analysis was obtained by optical microscopy (OM) and scanning electron microscopy (SEM) equipped with energy dispersive spectrometr...
By Mirko Gojić, Ivana Ivanić, Stjepan Kožuh, Milenko Rimac, Omer Beganović, Kemal Begović Begović, Borut Kosec