Which of the following is not the correct method of increasing fatigue limit?

Engineering Materials
Which of the following is not the correct method of increasing fatigue limit?

Shot peening

Nitriding of surface

Cold working

Surface decarburisation

Shot peening

Nitriding of surface

Cold working

Surface decarburisation

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Engineering Materials
The material in which the atoms are arranged chaotically, is called

Crystalline material

None of these

Amorphous material

Mesomorphous material

Crystalline material

None of these

Amorphous material

Mesomorphous material

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Engineering Materials
Malleable 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 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

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 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

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
Drop forging dies contain carbon of the order of

0.6 to 0.7%

0.7 to 0.9%

0.1 to 0.2%

0.25 to 0.5%

0.6 to 0.7%

0.7 to 0.9%

0.1 to 0.2%

0.25 to 0.5%

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Engineering Materials
Eutectoid reaction occurs at

1147°C

1493°C

600°C

723°C

1147°C

1493°C

600°C

723°C

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Engineering Materials
When medium carbon steel is heated to coarsening temperature

There is no change in grain size

The grain size first increases and then decreases very rapidly

The grain size increases very rapidly

The average grain size is a minimum

There is no change in grain size

The grain size first increases and then decreases very rapidly

The grain size increases very rapidly

The average grain size is a minimum

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Engineering Materials

Engineering Materials Which of the following is not the correct method of increasing fatigue limit?

Engineering Materials The material in which the atoms are arranged chaotically, is called

Engineering Materials Malleable cast iron

Engineering Materials Drop forging dies contain carbon of the order of

Engineering Materials Eutectoid reaction occurs at

Engineering Materials When medium carbon steel is heated to coarsening temperature

Engineering Materials
Which of the following is not the correct method of increasing fatigue limit?

Engineering Materials
The material in which the atoms are arranged chaotically, is called

Engineering Materials
Malleable cast iron

Engineering Materials
Drop forging dies contain carbon of the order of

Engineering Materials
Eutectoid reaction occurs at

Engineering Materials
When medium carbon steel is heated to coarsening temperature