Engineering Materials
For the allotropic forms of iron, the points of arrest are

The points where there is no further flow of metal
The points of discontinuity
Constant for all metals
The points where no further change occurs

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Engineering Materials
Specify the sequence correctly

Stress relief, recrystallization, grain growth
Stress relief, grain growth, recrystallization
Grain growth, stress relief, recrystallization
Grain growth, recrystallization, stress relief

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Engineering Materials
Malleable cast iron

Contains 1.7 to 3.5% carbon in Free State and is obtained by the slow cooling of molten cast iron
Is produced by small additions of magnesium (or cerium) in the ladle. Graphite is in the nodular or spheroidal form and is well dispersed throughout the material
Is produced by annealing process. It is soft, tough, and easily machined metal
Is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable

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