The article deals with the replacement of hard chrome plating by applying duplex system plasma nitriding + CrN coating (hereinafter referred to as PN CrN). goal research was find a suitable alternative for steel surface treatment that would replace and ensure similar mechanical tribological properties. An exposed part small-bore weapon selected evaluation, namely gas piston 42CrMo4 breech mecha...

Abstract The drawn arc stud welding is widely applied in steel construction, and its procedure can be qualified according to different standards by visual examinations practical destructive tests of the resulting joint. An evaluation material properties usually not requested particularly considering locally limited weld region. Nevertheless, there a need knowledge regarding complex press proces...

Quenching is a swift way of returning metal back to ambient temperature in order acquire certain property. Although it often used enhance the hardness metals and their micro-structure, equally causes serious variation mechanical physical properties metals. This research focuses on quenching media's effect microstructure 150mm x 80mm 8mm welded mild steel plate through microscopic examination, m...

Purpose: The main objective of this study was development of determination of phase fraction methodology in cast magnesium alloy containing aluminum and rare earth elements. Design/methodology/approach: The study was conducted on magnesium alloy containing 4 %wt. aluminum and 4 %wt. mixture of rare earth elements (mischmetal) in the as-cast condition. The mischmetal includes cerium, lanthanum, ...

friction-stir welding process is a novel method of solid state welding, which produces heat due to friction between the pin, the shoulder and the workpiece. this heat causes a paste area. shoulder pressure and pin spin cause edges integration and lead to welding. in this study, firstly, the feasibility of welding of steel sheet (en10130) with a thickness of 1.5mm has been tested by 58 experimen...