The defect which takes place due to imperfect packing of atoms during crystallization is known as

Engineering Materials
The defect which takes place due to imperfect packing of atoms during crystallization is known as

Line defect

Point defect

Surface defect

None of these

Line defect

Point defect

Surface defect

None of these

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Engineering Materials
A reversible change in the atomic structure of the steel with a corresponding change in the properties is known as

Allotropic change

Precipitation

Heat treatment

Recrystallization

Allotropic change

Precipitation

Heat treatment

Recrystallization

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Engineering Materials
Malleable cast iron

Is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable

Is produced by annealing process. It is soft, tough, and easily machined metal

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

Contains 1.7 to 3.5% carbon in Free State and is obtained by the slow cooling of molten cast iron

Is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable

Is produced by annealing process. It is soft, tough, and easily machined metal

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

Contains 1.7 to 3.5% carbon in Free State and is obtained by the slow cooling of molten cast iron

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Engineering Materials
The metal suitable for bearings subjected to light loads, is

Monel metal

Phosphor bronze

Silicon bronze

White metal

Monel metal

Phosphor bronze

Silicon bronze

White metal

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Engineering Materials
Points of arrest for iron correspond to

Stages at which properties do not change with increase in temperature

Stages at which allotropic forms change

There is nothing like points of arrest

Stages at which further heating does not increase temperature for some time

Stages at which properties do not change with increase in temperature

Stages at which allotropic forms change

There is nothing like points of arrest

Stages at which further heating does not increase temperature for some time

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Engineering Materials
The purpose of heat treatment is to

Modify the structure of the material

Any one of these

Change grain size

Relieve the stresses set up in the material after hot or cold working

Modify the structure of the material

Any one of these

Change grain size

Relieve the stresses set up in the material after hot or cold working

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Engineering Materials

Engineering Materials The defect which takes place due to imperfect packing of atoms during crystallization is known as

Engineering Materials A reversible change in the atomic structure of the steel with a corresponding change in the properties is known as

Engineering Materials Malleable cast iron

Engineering Materials The metal suitable for bearings subjected to light loads, is

Engineering Materials Points of arrest for iron correspond to

Engineering Materials The purpose of heat treatment is to

Engineering Materials
The defect which takes place due to imperfect packing of atoms during crystallization is known as

Engineering Materials
A reversible change in the atomic structure of the steel with a corresponding change in the properties is known as

Engineering Materials
Malleable cast iron

Engineering Materials
The metal suitable for bearings subjected to light loads, is

Engineering Materials
Points of arrest for iron correspond to

Engineering Materials
The purpose of heat treatment is to