Why cast product has low ductility?
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As casting we have inclusions, rapid cooling, etc will increase the brittle nature. So, the microstructures of casted product will be different and when it is forged or post casting treatment microstructure change and properties like ductility and toughness increases
As casting we have inclusions, rapid cooling, etc will increase the brittle nature. So, the microstructures of casted product will be different and when it is forged or post casting treatment microstructure change and properties like ductility and toughness increases
See lessHigh degrees of ductility occur due to metallic bonds, which are found predominantly in metals, leading to the common perception that metals are ductile in general. In metallic bonds valence shell electrons are delocalized and shared between many atoms. The delocalized electrons allow metal atoms toRead more
High degrees of ductility occur due to metallic bonds, which are found predominantly in metals, leading to the common perception that metals are ductile in general. In metallic bonds valence shell electrons are delocalized and shared between many atoms. The delocalized electrons allow metal atoms to slide past one another without being subjected to strong repulsive forces that would cause other materials to shatter. May be that is the reason casted products have low ductility due to unavailability of mechanical bond. Any type of corrections will be welcomed.
See lessWell your answer is correct, but in metallurgical way we cannot give this as a reason, but in depth your answer may be correct.. so, when the solidification of molten metal starts, it'll start from the walls, which helps in nucleating sites, so we observe columnar grains which move towards the centeRead more
Well your answer is correct, but in metallurgical way we cannot give this as a reason, but in depth your answer may be correct.. so, when the solidification of molten metal starts, it’ll start from the walls, which helps in nucleating sites, so we observe columnar grains which move towards the center of the mould or casting… for a metal to be ductile in nature it has to be equiaxed grains and it has to be slip systems… incase of columnar grains it’ll act as brittle…
See lessRate of nucleation increased when formation of grain growth is low it has been formed fine crystal Fine have low ductility good strength and hardness
Rate of nucleation increased when formation of grain growth is low it has been formed fine crystal
See lessFine have low ductility good strength and hardness