ABSTRACT This study reports an investigation of the effect of carburizing variables - temperature, time and percentage of energizer --on the case properties of C2R steel obtained from HMT Ltd. India. A carburizer consisting of hardwood charcoal and coke respectively in the ratio of 2: 1 was used for the research with sodium carbonate as the energizer. The carburizing box was filled with 20 mm thick carburizer compound prior to fixing the steel samples in place. The specimens were carburized ...
ABSTRACT The dissolution response of y phase to thermal and mechanical effects in an inertia friction welded turbine disk nickel base super alloy RR1000 has been investigated.
ABSTRACT The study focuses on the influence of aluminium titanium boron (A5TB) master alloy on the fatigue behaviour of 6063al alloy.
ABSTRACT The effect of constitutional liquation of strengthening particles in PM RR1000 superalloy in response to inerta friction welding process was investigated.
ABSTRACT The development of high strength materials, coupled with good formability has always been the aim of material scientists.
ABSTRACT In this work, the effect of various heat treatments on ST 60Mn steel on its fatigue strength prior to use and after use was studied it was observed that by normalising for service conditions not exceeding 10 stress cycle, the fatigue strength was raised by a factor of 1 2.
ABSTRACT This work investigated the possible use of Ushafa clay in Abuja, Nigeria as a suitable replacement for bentonite clay in foundry use. Moulding sand mixes with compositions of 8,10 and 13 % Ushafa clay, silica sand and 5, 7,8,9,10 and 11 % coal dust additives were mulled. From each mix, cylindrical specimens were prepared and subjected to permeability, shatter index, compression and shear strength tests. The results from the Ushafa mix were compared with results from Bentonite mixes....
ABSTRACT This work investigated the effect of annealing, normalizing and quenching heat treatments on the microstructure of some chromium alloyed grey cast iron. Three sets of ten samples each having chromium contents of 0.5, 1.5 and 2.5% were heat treated above the upper critical temperature, to austenitizing temperatures (800oC, 850oC, 900oC) for one hour each and then annealed, normalized and water quenched. Metallographic analyses of the heat treated samples were done. The results showed ...