On the basis of microstructure, briefly explain why gray iron is brittle and wea

Question

On the basis of microstructure, briefly explain why gray iron is brittle and weak in tension.

The graphite phase is brittle which makes the entire material brittle

The flake shape of the graphite introduces stress concentration locations which cause the material to become brittle

The iron-rich phase can form pearlite under some situations which creates a brittle material

The grain size of the material is small which translates to poor ductility

The graphite phase is brittle which makes the entire material brittle

The flake shape of the graphite introduces stress concentration locations which cause the material to become brittle

The iron-rich phase can form pearlite under some situations which creates a brittle material

The grain size of the material is small which translates to poor ductility

Explanation / Answer

The flake shape of the graphite introduces stress concentration locations which cause the material to become brittle

The flake shape of the graphite introduces stress concentration locations which cause the material to become brittle

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