2 results listed
In this study, silicon carbide (SiC) composite coating
layer was produced with Plasma Transferred Arc (PTA) welding
methods. Microstructure, hardness, and tribological performance
were investigated on the composite coating layers. The results
showed that the silicon carbide powders are completely dissolved
during the PTA cladding process and the microstructures
consisted of dendrites and interdendritic eutectic structure. SiC
composite coatings have significantly increased the hardness due
to the eutectic structures. PTA cladding processes improved the
wear resistance 3.8-fold compared to the substrate.
International Iron & Steel Symposium
UDCS
Koray KILIÇAY
Mustafa ULUTAN
Esad KAYA
İsmail BAYAR
In this study, cryogenic treatments (-160C)
were applied to medium carbon Vanadium content
38MnVS6 steel. The mechanical, and tribological
behaviours of steel were investigated. The effects of
cryogenic treatment soaking time on the specimens were
evaluated in terms of mechanical and tribological
performance including impact toughness, hardness, and
wear resistance, and microstructural analyses. The results
showed that the longer soaking times of cryogenic
treatment improved the wear resistance and hardness. But
besides the increase of these properties, cryogenic
treatment also reduced the impact toughness compared to
that of the conventional method, due to the increased in the
distribution of martensitic transformation.
International Iron & Steel Symposium
UDCS
Esad KAYA
Mustafa ULUTAN
Koray KILIÇAY
İsmail BAYAR