The macrosegregation behaviors of Al-Sn-Cu ternary immiscible alloy castings and their effects on mechanical tribological properties were investigated. results demonstrate that Sn Cu segregate in the casting simultaneously, mass fraction two elements has a “U” shaped distribution. Significantly, positive negative segregation occur casting, with appearing top lower surfaces remaining surfaces, 1...

Abstract The interest in inorganic foundry binders has been rising steadily recent times due to their favorable environmental characteristics. This paper compares the mold quality and cast attained with different binders. Three types of sand five were used for study. Of binders, there was liquid sodium silicate hardening methods, a geopolymer binder, also solid silicate. assessed through bendin...

STATEMENT OF PROBLEM Crowns cemented on short implant abutments may have insufficient retention. PURPOSE The purpose of this study was to evaluate the effect of circumferential grooves on the retention of cemented cast copings on implant abutments. MATERIAL AND METHODS Sixty similarly-shaped implant abutments were divided into 4 groups (n=15): without grooves, with 1 groove, with 2 grooves,...

a comprehensive review of fatigue behavior and fatigue design of heavy section wind turbine castings made of ductile iron en-gjs-400-18-lt is performed. common metallurgical defects that are affecting fatigue behavior of this material were studied. review of different researches on quantitative effect of chunky graphite and micro structure on fatigue behavior of en-gjs-400-18-lt was performed. ...

Abstract Aim and Objective The main aim of this study was to evaluate the effect three different types pattern materials on vertical marginal accuracy complete cast crown. Material Methods Three groups 20 specimens each were made based materials, that is, blue inlay wax, autopolymerizing acrylic resin, light cure resin. Castings examined using stereo microscope for discrepancy. Results result s...