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Home/Questions/Q 1776
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Jaiho
JaihoCopper
Asked: June 6, 20202020-06-06T23:04:13+05:30 2020-06-06T23:04:13+05:30In: Uncategorised

Why cast product has low ductility?

Why cast product has low ductility?
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    3 Answers

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    1. Shetty Gold
      2020-06-06T23:26:29+05:30Added an answer on June 6, 2020 at 11:26 pm

      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

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    2. Arpita Samal Platinum⭐ Metallurgical and Materials Engineering student
      2020-06-06T23:27:26+05:30Added an answer on June 6, 2020 at 11:27 pm

      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 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.

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      • 1 Reply
      • Shetty Gold
        2020-06-06T23:39:36+05:30Replied to answer on June 6, 2020 at 11:39 pm

        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 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…

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    3. [Deleted User]
      2020-06-07T07:27:37+05:30Added an answer on June 7, 2020 at 7:27 am

      Rate 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
      Fine have low ductility good strength and hardness

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