A reversible change in the atomic structure of the steel with a corresponding change in the properties 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

Allotropic change

Heat treatment

Precipitation

Recrystallization

Allotropic change

Heat treatment

Precipitation

Recrystallization

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Engineering Materials
In spheroidising process, the steel is

None of these

Heated up to the lower critical temperature and then cooled in still air

Heated slightly above the lower critical temperature and then cooled slowly to a temperature of 600°C

Heated below the lower critical temperature and then cooled slowly

None of these

Heated up to the lower critical temperature and then cooled in still air

Heated slightly above the lower critical temperature and then cooled slowly to a temperature of 600°C

Heated below the lower critical temperature and then cooled slowly

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Engineering Materials
In full annealing, the hypo eutectoid steel is heated from 30°C to 50°C above the upper critical temperature and then cooled

Any one of these

In still air

Slowly in the furnace

Suddenly in a suitable cooling medium

Any one of these

In still air

Slowly in the furnace

Suddenly in a suitable cooling medium

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Engineering Materials
The transistor is made of

Silver

Copper

Gold

Germanium

Silver

Copper

Gold

Germanium

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Engineering Materials
Malleable cast iron

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

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 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

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 ability of a material to absorb energy in the plastic range is called

Toughness

Resilience

Fatigue strength

Creep

Toughness

Resilience

Fatigue strength

Creep

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Engineering Materials

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

Engineering Materials In spheroidising process, the steel is

Engineering Materials In full annealing, the hypo eutectoid steel is heated from 30°C to 50°C above the upper critical temperature and then cooled

Engineering Materials The transistor is made of

Engineering Materials Malleable cast iron

Engineering Materials The ability of a material to absorb energy in the plastic range is called

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

Engineering Materials
In spheroidising process, the steel is

Engineering Materials
In full annealing, the hypo eutectoid steel is heated from 30°C to 50°C above the upper critical temperature and then cooled

Engineering Materials
The transistor is made of

Engineering Materials
Malleable cast iron

Engineering Materials
The ability of a material to absorb energy in the plastic range is called